High-pressure hose hidden precautions

First, choose a brand , quality assurance business , quality assurance, sales and service companies generally better manufacturing , high quality requirements .
Second, pay attention to the hydraulic fittings high-pressure hose assembly installation and operation. Not blindly cut production .Third, the high-pressure hose for industrial products, the use of units should be aware of their required product specifications. Blindly buy one of the factors also contributed to the quality problems .Fourth, as the user , but also pay attention to the high-pressure hose storage environment.

Metal hose selection

For a certain length and gauge metal hose, its ability to withstand stress and shock have certain limits, therefore, when used to choose according to the actual situation. Generally used with a nominal hydraulic hoses pipe same nominal diameter, length of the hose under the sink array of tanks, lateral displacement temperature deformation, misalignment, and other factors to produce an earthquake to determine. Corrugated metal hydraulic ferrules, nets and joint composed of three parts, bellows are made ​​of stainless steel, with good flexibility, small longitudinal rigidity and bending stiffness, can work within a radius of curvature of the nominal, with strong corrosion resistance and good temperature stability. Nets from the strengthening of the role of the metal hose with a larger carrying capacity. Therefore, the metal hose with shock, subjected to bending, absorb stress.

Overview of the hose

Hoses are divided into: stainless steel hose, metal hose, corrugated hose, plastic hoseCorrosion resistance of stainless steel hydraulic ferrule depends on the content of chromium, when added to the 10.5% of chromium, the atmospheric corrosion resistance of steel significantly increased, but the higher chromium content, while still being improved corrosion resistance, but obvious. The reason is that when the steel with a chromium alloying treatment, the type of change has become similar to the surface oxide formed on the surface of pure chromium oxide of the metal.Chromium-rich oxide protects the surface of this tightly adherent to prevent further oxidation. Such thin hydraulic fittings oxide layer, through which you can see the natural luster of stainless steel surfaces of stainless steel has a unique surface. Moreover, if the damaged surface, and atmospheric reactions exposed steel surface will self-repair, re-formation of this "passive film", continue to play a protective role.

Development of hydraulic hose assembly

After a few years of rapid development of reform and opening up , China's hydraulic hose assembly industry has made tremendous progress , their results were witnessed world , due to the development of Jic hydraulic fittingsassembly industry , the whole process of industrialization has also been driven up, get up vigor and vitality. Now, in the 21st century , especially after the party's 18 , China's economic development has entered a new phase, corresponding , for many industrial sectors and departments have also made ​​new demands. Therefore, as a hydraulic hose assembly industry , the need to establish a new development ideas, promote their own development and to adapt to the new era of development plans and ideas.First, companies should establish a people-oriented business ideas. Fully excavated talent, use of personnel , with talents for the development of enterprises to make a great contribution. For this reason , companies should be based on their actual situation , the construction of a mining standards and procedures of talent, and talent to make a different for different but appropriate arrangements to allow these people to give full play the initiative in different positions forhydraulic tube fitting industry to contribute their value.Second, enterprises should also be market-oriented, proactive , rather than passive waiting for the market ruling. With a lot of uncertainty on the market , these uncertainties , for the enterprise, is a potential threat , it will affect the interests and long-term development of enterprises. Therefore, enterprises should establish a set of internal hydraulic hose industry market response plans for a variety of problems that may arise , emergency preparedness , in order to achieve the purpose of being prepared .

use of the high-pressure hose size

When the high-pressure hose be withheld , will always produce withhold too tight or too loose phenomenon, and these phenomena often lead to adverse effects of high pressure hose . Today we say it is the size of the amount withheld would it have any effect on the high-pressure hose . We carried out by the following detailed understanding .Withhold the amount and rate of withholding high pressure hose and fittings assembly when the improper or joint structure and material , size selection is unreasonable, can lead to high pressure hose and fittings withholding too hydraulic hose assemblysor too loose will cause early damage to the joints .When assembled , if the withholding amount is too small, that is between the high pressure hose connector and cut through the loose , high pressure hose there may emerge in the role of oil in the early use from the joint ; If withholding is too large, then the connector and hose too hydraulic tube fitting , easily lead to hose inner being localized damage, cracks , directly into the high-pressure oil from the ruptured steel layer , and then he went to the wire along the gap between the spray coat tails , or has fled somewhere along the wire layer build up , so that the outer layer of plastic to produce drum kits and even rupture . Hoses and connectors in the assembly, if the withholding too fast, likely to cause damage to the plastic layer and the wire break, so that premature failure of the hose in use .The above information is very detailed description of the effect of the size of the amount withheld for the use of high-pressure hose produced , so we need considerable attention when using this withholding his dosage size is accurate, whether the mutation will produce high pressure hose , etc. problems should close attention.

Hydraulic hose assembly is the basis of hydraulic system components

Hydraulic hose assembly is the basis of hydraulic system components. Various hydraulic system is mainly used in construction machinery , metallurgy, mining machinery, and easy installation and removal of the . It is composed of high-pressure steel wire braided or twisted hydraulic hose assembly and steel fittings made ​​by special equipment withhold conduct hydraulic power transmission or conveying water, gas, oil pressure medium to ensure circulation of the liquid and transfer the liquid energy.
Hydraulic hoses need proper protection. Due to the complexity of hydraulic hose varieties , structural diversity, coupled with different conditions , so the length of life , not only on their quality , but also depends on the proper use and maintenance . So even if the product has high quality , if not properly used and maintained , will seriously affect the quality and longevity of its use , even a serious accident should not have occurred , causing damage to property . First of all, dedicated specifically to deal with . hydraulic hose assemblysand hose assembly can only be designed for transporting materials , other materials can not be used to send . Secondly , the use of the pressures within the . Hose and hose assembly should not be used in excess of the design working pressure ( including shock pressure ) . Third, the transportation of materials moderate temperature . Under hose and hose assembly conveyed medium temperature normal circumstances, should not exceed -40 ℃ - +120 ℃. Fourth, given the appropriate use of space hose , not bent. Hose and hose assembly should not be less than the minimum bend radius under the hose , to avoid bending or folding occurs near the pipe joints , otherwise it will impede hydraulic transmission and delivery of materials or damage to the hose assembly. Finally , keep the hose clean. Hose and hose assembly should be kept clean , inside should rinse ( especially acid output tubes, spray tubes, mortar tubes ) . To prevent foreign objects into the lumen , hinder the transport fluid , damage to the device .

Many factors will affect the use of hose assembly

Many factors will affect the use of the hose assembly. The first is the size of the hose. Inner diameter of hydraulic hose assemblysto the right, if it is too small, will affect efficiency. If the inside diameter is too large, will affect the overall system performance of the play. Therefore, it is important to select the appropriate inner diameter. Second, hydraulic hoses will also affect the temperature range of use. If the hydraulic hose working environment temperature exceeds the specified range, then the hydraulic hose pressure capacity will thus be greatly reduced. Experts suggest that if the high or low temperature working environment, should be put on the hydraulic hose jacket. In addition to the above two factors, the use of hydraulic hose assembly Hose working pressure is also affected by the impact stress and fatigue life, impact bending radius and chemical compatibility and other factors.
Hydraulic hose assembly in our lives is very wide, in the mining industry, agriculture and industrial sectors have a lot of use. It is transmitted through water and gas or oil substance hydraulic power to ensure adequate fluid energy during operation.

By utilizing high pressure hose and connector assembly and buckling mode selection is improper

By utilizing high pressure hose and connector assembly and buckling mode selection is improper. Or joint structure, material, size selection is not reasonable, can lead to joint and hose pressure too tight or too loose, causing joint early damage. The assembly, if the withholding amount is too small, crimping connector and hose pressure hydraulic flangestoo loose, under the action of oil pressure hose disengages from the joint may at the initial stage of use; if the withholding amount is too large, then the buckling pressing joint and hose pressure too tight, easily lead to hose inner layer by local damage, deformation, produce crack, high pressure oil from weak, rupture directly into the wire layer, then along the rear of the jet slot channeling to coat steel wires, or has been along the wire layer channeling somewhere accumulates, the outer layer of the hydraulic tube fitting drum kits and even cracking. Hose and connector in the assembly, if press speed too fast, easy to cause damage and fracture of the glue in the wire layer, so that the hose damage early in use. In addition, the joint design is not reasonable, Jerry, the processing quality is bad, can also cause the glue in the joint damage; if the improper material selection, not up to the high pressure hose assembly requirements. Will shorten the service life of the high pressure hose.

The inner wall of the high pressure hose for oil resistant rubber

The inner wall of the high pressure hose for oil resistant rubber, the middle braided wire (steel wire braided hose) or winding steel wire (wire wound hose)
The inner wall of the high pressure hose for oil resistant Hydraulic pipe fittings, the middle braided wire (steel wire braided hose) or winding steel wire (wire wound hose). The poor quality of the hose will appear: tube wall is uneven; steel wire braided tightly (wire small stroke), too loose (steel large stroke) or the number of the steel wire is too small; hose compression deformation (elongation, shortening or bending deformation (national standard) larger wire stroke control within plus or minus 3); the outer layerhydraulic hoses air tightness differences lead to corrosion of the steel wire (main forms: bare wire); the inner layer glue sealing difference and make the high-pressure oil easily into the wire layer; adhesive layer and the steel wire layer adhesion deficiency. This will make the hose to bear force is reduced, finally appear in the weak point of tube wall burst. Especially in the inner layer, poor air tightness of words, a compression, it Water Leakage, then directly burst pressure.

Because plastic coated hose connector design unreasonable phenomenon caused by the failure

Pack plastic hose connector design is essential, which is the core technology of hose assemblies. In actual operation, including plastic Hydraulic adapters connector design is often not a good grasp of various key points, it will cause a variety of failures. Because plastic coated hydraulic hose assemblys connector design failures caused by the unreasonable phenomenon is most prevalent are withheld at the inner tube longitudinal cracks appear and circumferential cracks are two, there are other symptoms, but not common. There are the following two: 1 withhold longitudinal cracks appeared at the inner tube site withhold the end of the sleeve, the inner tube vertical microcracks appear, once a crack running through, it will result in failure of two hydraulic tube fitting assemblies withheld at the inner tube circumferential cracks appear in actual use, and the testing process is also one of the more common symptoms. Inner tube circumferential cracks appeared after the weak link here will become, along with the gradual extension circumferential cracks, often in the form here leak, resulting in failure of hose assemblies.

Butt weld dissimilar metal joints

Dissimilar metal joints or butt weld two different metals from the base material welded directly or using the first isolation layer added, after the method of welding, in the latter case, the spacer layer and a joint assessment of the welding process can be performed hydraulic flangesimultaneously .Taking into account the performance of existing materials, in all cases, especially in the cut specimen should be cut so that the specimen should be able to reflect the characteristics of each connection area and observe the following precautions:Transverse weld test should have been done the base material, the isolation layer (if any) and weld hydraulic fittings. Bend test shall be to make the fusion line, the isolation layer, deposited metal under stress manner. The number of samples and sampling method with the joint geometry should change.

Card sets of pipe joints without welding process

Card sets of pipe joints have a solid connection , pressure capacity, high temperature resistance, good sealing and repeated installation and maintenance easy, safe and reliable. Card sets hydraulic ferrule joints pipe working principle is to insert the card kit, using the ferrule nut , inconsistent card sets, cut hydraulic adapters and seal. It is connected with hydraulic adapter without welding , is conducive to fire, explosion , and high-altitude operations , and can eliminate the evils of welding accidentally . So it is refining, chemical , oil, gas , food, pharmaceutical , instrumentation, piping and other systems controlled device in a more advanced connections . For oil, gas , water, etc. piping connections .

Hydraulic fittings structural characteristics of the hydraulic system

Hydraulic fittings hydraulic system due to its simple structure, flexible layout , good self-lubricating components , easy , and combined with other transmission methods . Therefore, at present most of the equipment in all types of enterprises on a wide range of applications . I plant all tending electrolysis , casting machines and tipping hybrid furnace and other key equipment are used the hydraulic fittings system . The hydraulic system of hydraulic pipe fittings are generally closed loop piping system, hydraulic hose assemblys system failure is difficult to locate hidden main disadvantages of hydraulic drive . Equipment failure of the hydraulic system as soon as possible once the cause of the fault and immediately removed to reduce parking due to equipment caused economic losses. Engineering and technical personnel required by virtue of their professional and technical skills, basic knowledge of hydraulic ferrule transmission , hydraulic fittings components and the basic principles of structural knowledge loop failure analysis.

Joint leakage prevention, protection of life

In the hydraulic system, both the metal pipe coupling, or hydraulic hose fittings, there are prone to leakage problems. For ferrule fittings, mostly due to pipeline subject to greater external force or impact, so that the card sleeve loose or deformed face caused by leaking pipe, you should check whether the card holder out of round, whether the defect edge, whether the pipe ends intact and nut, compression level, etc., while also eliminating pipeline force.Hydraulic pipe fittings hose fittings for flared fittings, mostly due to excessive flaring, quality, undesirable or multiple demolition, resulting in flared cracks or deformation caused by leaks, then you can be re-flared front truncated. If you use a male and female cone top pressure seal, the leakage is mostly due to two cone damage, Hydraulic adapters hose fittings available on the cone abrasive grit grinding. In some with "о" or outer-ring face seal by the occasion.

Hydraulic fittings structural characteristics of the hydraulic system

Hydraulic fittings hydraulic system due to its simple structure, flexible layout, good self-lubricating components, easy, and combined with other transmission methods. Therefore, at present most of the equipment in all types of enterprises on a wide range of applications, all electrolytic tending my factory, casting machines and tipping hybrid furnace and other key equipment are used the hydraulic system. Hydraulic adapters system of hydraulic pipe fittings are generally closed loop piping system, hydraulic hose fitting system failure is difficult to locate hidden main disadvantages of hydraulic drive.Equipment failure of the hydraulic adapter system as soon as possible once the cause of the fault and immediately removed to reduce parking due to equipment caused economic losses. Engineering and technical personnel required by virtue of their professional and technical skills, basic knowledge of hydraulic transmission, hydraulic fittings components and the basic principles of structural failure analysis circuit knowledge

Card sets of pipe joints relationship between the structure

Card sets of pipe joints pipe working principle is to insert the card kit, using the ferrule nut, inconsistent card sets, cut Hydraulic pipe fittings and seal. It is connected with the pipe without welding, is conducive to fire, explosion, and high-altitude operations, and can eliminate the evils of welding accidentally. So it is refining, chemical, oil, gas, food, pharmaceutical, instrumentation, piping and other systems controlled device in a more advanced connections. For oil, gas, water, etc. piping connections.Ferrule tube fitting consists of three parts: the connector body, card sets, nuts. When the card sleeve and nut cap on hydraulic adapter into the fitting body, tighten the nut on the outer end fittings and connector body cone fit evenly inside edge bite into seamless, form an effective seal

Brazing metal hose connector structure has the following characteristics

Brazing metal hose connector structure has the following characteristics:
Brazing seam wall shape is more complex. A corrugated thin steel net. Shown in Figure l . In order to ensure the tightness of brazed joints and carrying capacity , for brazing high quality requirements , and in the production of sufficient stability. Because corrugated hose and fine steel mesh thin thin, fast flame with oxygen B manual Hydraulic pipe fittings cause overheating. Bitter than 830C is generated stability of chromium and titanium oxides is difficult to remove , the solder is almost impossible , so the required soldering process to prevent oxidation. In the welding production practice . Due to its special structure and unfavorable factors, using oxygen B brazing often difficult to achieve faster design and process requirements. In order to properly solve this problem. We use Arc Brazing new technology. That is carried out under an inert gas protection pull arc melting brazing , MIG arc in the workpiece and is surrounded by protective gas .hydraulic hose assemblysaterial as the arc electrode . Continuously fed from the torch brazing zone , forming the weld brazing filler metal . Cast arc melting brazing material is characterized by a low melting point solder ( 2 silver solder melting point of 860 ~ 900 "C), high mechanical strength , the weld heat affected zone is small brazing without the use of solder may not have a corrosive effect . Welding not after cleaning . device operation side cartridges. cartridges in automated.

Metal hose brazed joint structure and characteristics

Metal hose connectors are widely used in oil and insulating oil and turbine oil transportation . As a medium delivery hose has a higher pressure and temperature. Therefore, if a leak or desoldering welding parts will cause serious accidents. There are inner and outer metal hose . The inner layer is Φ2O × 2mm hoses. The thin outer layer of woven steel mesh . Two layers are made of 1Cr18Ni9Ti. Hose which mainly acts as a seal . Hydraulic hose fittings mesh from strength to protect ashamed to use . Recently factory production hose three gods in the form ( spiral integral , roll -welded and brazed ) . Since the metal boiler delivery hose at runtime withstand high temperatures and pressures , often subject to bending stress. Therefore recommend the use of the whole spiral hose . Hose transported to the site after the installation of a short stainless steel Hydraulic pipe fittings , while the fine plus a stainless steel outer and brazing , braze weld pipe work must ensure sealing and bear turns force .

Preswaged sets of pipe joints of the most important aspects of pre

Preswaged sets of pipe joints of the most important aspects of pre-( A ) pre-installed ① card preloaded ring couplings most important aspect of a direct impact on the reliability of sealing . Generally require a dedicated preheater . Small diameter connector can be pre-installed in a vise . In practice, with a connector as the parent , the nut , ferrule onto the tube can be pressed . There are card sets straight couplings , sleeve type end through turn heads, ferrule tube fittings and other types . I found that even in the same factory shipment , these types of connector body tapered hole depth is often not the same , the result is caused by a leak , and this problem is often overlooked. The correct approach is , the pipe end what kind of connector body connection , the corresponding connection terminal is preloaded with the same type of connector , so to avoid possible leakage problems . ② pipe end should be flush . After sawing the pipe should be hydraulic hose fitting wheel and other tools , and deburring , cleaning with high-pressure air to blow before use. ③ pre-installed , you should try to keep the tube and the coaxial connector body , if the pipe deflection is too large will cause seal failure. ④ preloaded force should not be too large so that the ferrule tube embedded in the outer wall just inside the edge , card sets shall have no deformation . During pipeline connection, then the provisions of the tightening force assembled . ф6-1 card sets tightening force is 64-1 15n, 16фmmr 259n, ф18mm for 450n. If the pre- deformed when the card holder will lose the seal.
( Two ) . Prohibit adding sealant filler. It was sealed in order to achieve better results, apply sealant put on the card , the results sealant being washed into hydraulic adapter, hydraulic components causing blockage damping hole fault .
( III). Connecting pipe should be sufficient deformation of the tube margin , to prevent the tube subjected to tensile strength .
( Four ) . Connecting pipe should avoid subjecting it to lateral forces , lateral forces caused Mifengbuyan over the General Assembly .
( Five ) . Connecting pipe should be a good one , to avoid multiple disassemble , otherwise it will deteriorate the sealing performance

Metal hose used for automated meter signal wire protection tube and instrument protection tube

Metal hose used for automated meter signal wire protection tube and instrument protection tube. Instrument for the protection circuit, protecting precision optical ruler to protect the sensing lines threading stainless steel hose, metal hose electrical protection; stainless Hydraulic hose fittings, good softness, dustproof, waterproof, anti-oil, anti-rust; abrasion resistance, and provide some shielding effect. The sensing for precision optical ruler line protection, industrial sensor circuit protection. Has good flexibility, corrosion resistance, high temperature resistance, abrasion resistance, tensile strength.

Metal hose technical knowledge

With the rapid development of modern industry and the mutual penetration of various disciplines , metal hose in the machinery manufacturing , petrochemical , instrumentation, and is widely used on various projects . Nearly three decades, it has expanded used in aerospace, aviation, nuclear power, shipbuilding, electronics and new construction and other industrial sectors , a modern engineering technology indispensable accessory , plays a prominent role. In China , it appears the early fifties the most original Hydraulic tube fittings, which is based on the strip is wrapped around the body of the bellows . However, it is developing very fast , after five years or so , we have gone through other countries traveled nearly a hundred years . Currently, we have been able to produce some reached the international advanced level of metal hose . However, due to technical exchange and standardization issues, a number of technical personnel in the field of design of the structural characteristics of modern metal hose , performance indicators is not very clear , resulting in a lot of new metal hose should use the occasion still Hydraulic ferrules structures in the form of relatively old metal hose , rubber tubes and plastic tubes . Universal metal hose technical knowledge , is to enable more people to become familiar with and master the knowledge of modern metal hose for wider and more reasonable to use it .

Shrink cable joints preventive measures and treatment process

Cable insulation stripping , the application of fine sandpaper carefully polished surface of the main insulation layer , making it smooth and no marks , no semiconductor residual points . The insulation must be cleaned with cleaning solvent from the core to the semiconductor shield direction , do not use the shield contact with the semiconductor cleaning cleaning paper the main insulating layer surface .After crimping wire core , application file, sandpaper carefully polished to eliminate edges and tip , and pay attention to the metal fines shall not remain on the surface of the insulating layer .Cable connector in the production process should pay Hydraulic ferrules attention to keep clean , but should try to shorten production time , cut the cable after stripping , exposed to air for longer , intrusive impurities , water , gas , dust, etc. , the greater the possibility to affect joint quality . Therefore requested prior to construction to fully do the preparatory work to ensure uninterrupted production at one go. Production shrink joints should be carefully checked before cable accessories and cable facilities, so as to strictly control the shrink silicone rubber insulating sleeve amount of interference , to ensure that they have sufficient grip force, the interface close contact, no air gap . Respectively, in each phase after shrink Hydraulic adapters composite insulating sleeve surrounding the two ports at the semiconductor self-adhesive tape . Thus, both the silicone rubber casing semiconductor layer and semiconductor XLPE cable outer shield good contact , but also play the role of axial waterproof .Surrounding the self-adhesive waterproof tape, shrink connector moisture seal is key to a semi- overlap method ported from one to the other end of the connector wrapping , and then wrapping the opposite direction from one end to the starting side , wrap two layers. After each wrapped with both hands clasped in turn again, to make it better bonding. Be sure to pull the appropriate wrapping , so tightly wrapped seamless .

Metal soft metal hose construction, construction methods using segmented pipe

Metal soft metal hose construction, construction methods using segmented pipe construction , the use of segmented construction methods , in advance of the original arch culvert base with angle side by side two , the length determined based on long culvert . Culvert advance for the rails, corrugated culvert pipe diameter according to project needs may have different specifications , ready to pipe diameter of 0.5m - 2.5m; each section of pipe length 3 meters. Using internal ( external ) flange bolts. Assembled pipe diameter of 3m - 8m. Each circumferential direction 4 --- 15 plates, lap board and the board strength bolts tightened. If Han longer than 30 meters, the corrugated culvert culvert sides of the original width of less than 80cm, length 3m-6m may be downstream or upstream culvert advance toward the one end , in place later , it can be fixed to the top of the sheet rock masonry end wall , the other end of the corrugated culvert culvert with sandbags or the distance between the mortar and stone block , width 50cm, then start filling . Both sides of the law can be dense or coarse watertight concrete pouring Vibes tamping ; top with high-pressure pumping expansive cement mortar . This section tube four weeks after they have finished filling the second pipe shipped to carry two connections , corrugated culvert pipe are connected to the inner flange bolting , workers in the pipe connection. After connecting to the same method as backfill . In this order , to complete the construction of the entire road corrugated culvert work . Hydraulic tube fittings , according to the selection of electrical equipment into the cable connector metal hoses and Hydraulic pipe fittings, metal hose fittings according to the size of the transition metal hose connector panel mounted connector and metal hose , so that the whole system is naturally smooth ; transition joints can either press the need to produce at the construction site can also be mass-produced in the factory according to standard parts , with the use of promotional value ; cable can extend the life of the cable to be effective in preventing injury leakage and other external forces generated security incidents.

The structure and properties of metal hose introduction

Corrugated metal hose is a modern industrial pipeline a high quality flexible connecting tube . It mainly consists of metal bellows , metal mesh and various different forms of joint components. It is a spiral -shaped corrugated inner tube or annular corrugated thin-walled stainless steel bellows , bellows outer sleeve made ​​of stainless steel wire mesh or stainless steel woven according to certain parameters . Hydraulic tube fittings at both ends of piping or equipment in accordance with the user 's joint form prepared . Metal bellows hose is made of stainless steel seamless or longitudinally welded stainless steel thin walled tube through precision molded plastic deformation . Bellows hose contour determines the elasticity of softness and fatigue resistance , easy to absorb all kinds of sports deformation and cyclic loading , especially to meet the system larger displacement compensation . Corrugated metalHydraulic hose fittings has good flexibility , fatigue resistance , high temperature resistance, corrosion resistance , and many other excellent features, it is relative to other types of hose ( rubber hose , plastic hose ) lifetime is much higher , with the the development of modern industry , resistant to high temperature , high pressure , corrosion-resistant corrugated metal hose is increasingly widely used.

Metal hose Application Performance

Closed metal hose has high acid and alkali, high temperature, flexible bend freely and specifications are complete , easy to install , maintenance free, long life characteristics . Applicable to any environment , various types of metal cutting machinery and equipment are applicable . Corrugated metal pipe is a modern industrial pipeline a high quality flexible connecting tube . It mainly consists of metal bellows , metal mesh and various different forms of joint components. It is a spiral -shaped corrugated inner tube or annular corrugated thin-walled stainless steel bellows , Hydraulic hose fittings outer sleeve made ​​of stainless steel wire mesh or stainless steel woven according to certain parameters . Hose connectors at both ends of piping or equipment in accordance with the user 's joint form prepared . Corrugated metal hose has good flexibility , fatigue resistance , high temperature resistance, corrosion resistance , and many other excellent features, it is relative to other types of hose ( rubber hose , plastic hose ) lifetime is much higher , with the the development of modern industry , resistant to high temperature , high pressure , corrosion-resistant corrugated metal hose is increasingly widely used. Gas stove with gas vent pipe connections , use that is resistant to corrosion, oxidation of the metal hose . Metal hose with threaded connection as long as the stove is connected , you can use the seal will not install due to human causes leaks , and ease of installation .

Stainless steel pipes instead of water supply pipeline has become the trend of other materials

As more and more high buildings , high-rise buildings in the drinking water and fire water delivery systems have special requirements , the system must not only be able to withstand high pressure but also caused by the earthquake and the building of wind movement . Engineers are with stainless steel piping system meets these requirements . The world's newest and tallest 3 buildings ( China Taiwan Province, Taipei Financial Center , Brisbane, Australia Oro Plata Building and Kuala Lumpur Petronas Twin Towers ) is the best illustration of this to the high pressure stainless steel pipe the system changes.In the past 25 years the German drinking water extraction, Hydraulic hose fittings and distribution systems made ​​of stainless steel has been growing widely recognized. Stainless steel tube is not only smooth luxury , look as new, and is widely recognized as a leading environmental health water supply pipes. The strength of austenitic stainless steel pipe carbon steel pipe 2 times , 4 times brass , PPR plastic pipe 8 times , is truly safe and Hydraulic ferrules and can be done with the building with life green pipe. Another major use of stainless steel piping is - the life cycle cost of stainless steel components has obvious advantages , because the long-term infrastructure such as drinking water means the use of a stainless steel , you rarely need to be replaced .Although stainless steel drinking water systems in the world, the universal application will take some time , but in the engineering and economic aspects of stainless steel has the advantage over other alternative materials have shown that : instead of other materials with stainless steel pipe water pipe has become a trend .

Metal hose applications industry

Metal hose applications industry1 , metallurgical industry , metal hose is gradually transition to competition from product performance competitive cost performance , product structure in shape, the metal hose industry applications has been widely recognized .2 , the petrochemical industry , the situation is relatively complex, on the one hand , large-diameter high-pressure hose and tank drain hose central market demand is growing, and new product development in the field of domestic far failed to put in place . On the other hand , some other occasion hose has appeared the phenomenon of alternative products such as dock appearing on the market with a non-metallic Hydraulic adapters conduit tube ( light weight , pressure fit ) . As the petrochemical industry is now the largest domestic market hose , various competitive in this field , input cost of new product development in this area is also larger .3 , railway locomotive industries. As used by the Ministry of Railways information required on the form of a composite hose made ​​stereotypes provisions will not be great changes in the product mix in recent years , mainly manifested as price and service competition. But in the long term, the use of complex conditions , the uncertainty of the composite hose damage from abroad perspective of the development of the industry hose , metal hose being replaced is inevitable, so the product development is still far from over.4 , shipbuilding Hydraulic ferrules industry, product testing by the Society in addition to need , but no special technical performance requirements, but according to foreign domestic data, its market demand is also huge. 5 , civil construction , irrigation installation and other industries, in addition to some of the stereotypes of the hose outside ( such as plumbing , etc. ) , thick-walled tube instead of the trend of domestic elbow yet developed , according to Japanese data show that as much as their domestic water heater application prospects hose market.

English expression fittings

Some of pipe fittings industry jargon is no specific point in the online English translation, the major off pipe fittings manufacturers also do not have English Introduction. Such as tube fittings, terminal through connector, plug-welding elbow, two-way connector body and so on. Tee: three-way pipe connector terminal through connector: Straight thread connector plug welding elbow: Through welded elbow-way connector body: bidirectional Hydraulic ferrules pipe fittings, intubation pieces, threaded pipe fittings Butt-English names are welding fitting (referred BW Fitting), Socket welding fitting (abbreviated SW fitting), Threaded fitting. Fittings, pipe fittings may be on domestic non-standard argument. About the tee, is divided into equal tee (Equal Tee), also known as straight tee (Straight Tee), and reducing tee or Reducing Tee (Reducing Tee), in the actual business dealings, the general would not have said fitting it.

Cracking Analysis of high-pressure metal hoses

Chemical composition of the base metal hoses meet the standard requirements , microstructure normal . Failure hose member and the base metal and weld finished piece unused micro-cracks are present on the hose , the hose which indicates that micro-cracks before they are used . According to the position and shape of micro-cracks can be divided into two categories: one is located on the weld , the weld along the direction of the main direction of the crack , in addition to many cracks perpendicular to the main secondary cracks , these cracks are located weld intergranular columnar crystal Hydraulic tube fittings is formed when the welding weld cracking ; second crest of microcracks in the inner surface of the hose , these micro- cracks in the circumferential direction along the hose (Up direction perpendicular to the weld ). and substantially parallel to each other , since the majority of these micro-cracks exist in the inner surface of the crest , and the analyzes were performed by location and morphology with regularity , so these cracks should be rolling waves generated when processing cracks. In welding and molding process , the micro crack initiation at the inner surface of the hose in the subsequent assembly process of trial and the use of extended fatigue microcracks , finally cracked through , causing oil spills . Recommended welding hose and processing to improve, in order to avoid the generation of microcracks .

Metal hose is an essential component of modern pipeline

Metal hose because it has a good seal, pressure resistance, high temperature resistance, corrosion resistance, and certain other properties available around the song has become an essential component of modern pipeline. Metal hose can be used for chemical piping systems superheated vapor tube, Hydraulic ferrules and pneumatic equipment, high-pressure pipeline, the transmission medium, pipes and other drug burst, the role is to absorb the reciprocating movement, absorb thermal expansion, vibration absorption, compensation pipe installation deviation. Because metal hose complicated forces at work, poor working conditions, so the accurate representation of the force metal hose there are considerable difficulties. Largely by the bellows metal hose, and fittings nets three parts. Corrugated metal hose pipe is the subject of the role played around; nets from enhanced shielding effect; joint plays a role in the connection.

Metal hose reel machine nonmetal parts cleaning method

Metal hose reel machine nonmetal parts cleaning method - in metal hose machine with metal parts , there are also non-metallic parts, metal hose machine maintenance , it is necessary for some spare parts for cleaning. Clean metal parts , generally diesel , petrol or cleaning agents. However, in cleaning metallic parts, can not be used diesel oil, gasoline and the like for cleaning it. Otherwise, it will make some non-metallic parts deformation , deterioration or failure . Therefore, the non-metallic parts should be based on different materials , use of different Hydraulic pipe fittings.1 , is to clean friction plate, such as the clutch friction plate, brake linings , etc., can only use petrol to clean.2, which is made ​​of rubber parts cleaning , such as rubber sheet , aprons , etc., should be cleaned with alcohol or brake fluid .3 , is to clean paper parts, can not be washed with water in the diesel fuel to clean.4 , is made ​​of parts cleaning foam should use detergent or soap and water.5 , is to clean leather accessories, such as drive belts , etc., they can be washed or wiped clean with a cloth

Metal hose selection

For a given length and specifications of metal hoses, their ability to withstand stress and shock have certain limits, therefore, when used according to the actual situation. Generally used nominal diameter Hydraulic hose fittings the same nominal diameter, hose length array according to Shen tank temperature deformation, misalignment and earthquakes and other factors to determine the lateral displacement produced. The metal bellows tube, nets of three parts and connectors, bellows are made ​​of stainless steel, has a good flexibility, its longitudinal rigidity and bending rigidity is small, within a radius of curvature at the rated working, with a strong corrosion resistance and good temperature stability. Nets from strengthening the role of the metal hose has a large carrying capacity. Therefore, the metal hose with shock, subjected to bending, absorb stress.

Resistant metal hose

Resistant metal hose coal injection system in ironmaking, steelmaking refining furnace and other solid materials to ease the occasion, with ordinary metal hose soon frayed, Huasheng pipe fittings manufactured using wear resistant stainless steel corrugated hose advanced technology from developed, proved through practice, high-speed flow in the pipe body particle abrasion, long service life.
Wear-resistant metal Hydraulic hose fittings body using multi-layer composite structure, followed by heat from outside to inside layer of asbestos cloth, wire mesh layer, a metal layer and a trapezoidal cross-section bellows wound metal hose layer. Its layers and hoop ends welded together tight combinations, hose quick connector used between the body. The metal hose better solution because partial burning of the surface and the inner tube wear two major problems affecting the service life of metal hose, metal hose and compared to similar existing product life greatly improved, the relative cost of production significantly reduced iron plant particularly suitable application technique used in pulverized coal injection.

Corrugated metal hose is a modern industrial pipeline a high quality flexible pipe

Corrugated metal hose ( short hose ) is a modern industrial pipeline a high quality flexible pipe . It mainly consists of bellows, nets and joint components. Its inner tube is a spiral or annular waveform walled stainless steel bellows , bellows outer nets, is made of stainless steel wire or woven according to certain parameters . Hose Hydraulic tube fittings or flanges at both ends of the pipe joints with customers or flange mating .Bellows hose is made of very thin-walled stainless steel seamless or longitudinal weld precision plastic processing after forming . Because the elastic property of the bellows determine the contour hose has good flexibility and fatigue resistance , making it very easy to absorb deformation and cyclic loading various sports , especially in the piping system has the ability to compensate for a large amount of displacement . I plant in addition to the original hose sophisticated production equipment, recently introduced from Japan two high-precision , high-tech molded bellows automatic welding production lines, greatly improved the quality of the hose and the hose length is not produced limits , to meet the needs of long hose . Dawn brand hose nominal diameter range of DN4-800mm, length optional. Nets are installed in the pressure line hose main pressure parts , while the bellows from the sheath effect, according to the size of pipeline pressure and locations , you can select one or more layers of stainless steel wire or steel strip weaving, dawn brand hose pressure range is generally PN0.6-32.0Mpa. Up to 42.0MPa. The production of the main part of the material hose is the use of austenitic stainless steel , thus ensuring the hose excellent in heat resistance and corrosion resistance of the hose very wide temperature range , is -196-600 degrees to hose by pipelines through the media choose to apply corrosive stainless steel grades, the corrosion resistance of the hose can be guaranteed . Corrugated metal hose has good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance , and many other features, it is relative to other hoses ( rubber, plastic hose ) much higher lifetime would therefore it also has a high overall economic efficiency . With the development of modern industry , for high temperature, high pressure hose corrugated metal demand is also getting bigger . Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas , air, heavy oil, petroleum, chemical -pharmaceutical etc apply.

Hose technical knowledge

With the rapid development of modern industry and the mutual penetration of various disciplines, metal hose in the machinery manufacturing, petrochemical, instrumentation, and is widely used on various projects. Nearly three decades, it has expanded used in aerospace, aviation, nuclear power, shipbuilding, electronics and new construction and other industrial sectors, a modern engineering technology indispensable accessory, plays a prominent role. In China, it appears the early fifties the most Hydraulic tube fittings  metal hose, which is based on the strip is wrapped around the body of the bellows. However, it is developing very fast, after five years or so, we have gone through other countries traveled nearly a hundred years. Currently, we have been able to produce some reached the international advanced level of metal hose. However, due to technical exchange and standardization issues, a number of technical personnel in the field of design of the structural characteristics of modern metal hose, performance indicators is not very clear, resulting in a lot of new metal hose should use the occasion still use those structures in the form of relatively old metal hose, rubber tubes and plastic tubes. Universal metal hose technical knowledge, is to enable more people to become familiar with and master the knowledge of modern metal hose for wider and more reasonable to use it.

Metal hose pavement construction requirements

Metal hose construction, the use of sub-construction method, previously used in the original arch culvert base angle side by side two, the length determined based on long culvert. Culvert advance for the rails, corrugated culvert pipe diameter according to project needs may have different specifications, ready to pipe diameter of 0.5m - 2.5m; each section of pipe length 3 meters. Using internal (external) flange bolts. Assembled pipe diameter of 3m - 8m. Each circumferential direction 4 --- 15 plates, lap board and the board strength bolts tightened. If Han longer than 30 meters, the corrugated culvert culvert sides of the original width of less than 80cm, length 3m-6m may be downstream or upstream culvert advance toward the one end, in place later, it can be fixed to the top of the sheet rock masonry end wall, the other end of the corrugated culvert culvert with sandbags or the distance between the mortar and stone block, width 50cm, then start filling. Both sides of the law can be dense or coarse watertight concrete pouring Vibes tamping; top with high-pressure pumping expansive cement mortar. This section tube four weeks after they have finished filling the second pipe shipped to carry two connections, corrugated culvert pipe are connected to the inner flange bolting, workers in the pipe connection. After connecting to the same method as backfill. In this order, to complete the construction of the entire road corrugated culvert work. Metal hose adapter, according to the selection of electrical equipment into the cable connector metal hoses and metal Hydraulic hose fittings , metal hose fittings according to the size of the transition metal hose connector panel mounted connector and metal hose, so that the whole system is naturally smooth; transition joints can either press the need to produce at the construction site can also be mass-produced in the factory according to standard parts, with the use of promotional value; cable can extend the life of the cable to be effective in preventing injury leakage and other external forces generated security incidents.

Stainless steel plastic coated metal hose has good flexibility

Stainless steel plastic coated metal hose has good flexibility, corrosion resistance, high temperature resistance, abrasion resistance, tensile strength, water resistance and provides some electromagnetic shielding performance.
Stainless steel plastic coated metal hose can be freely bent into a variety of angles and radii of curvature in all Hydraulic tube fittings have the same softness and durability; sections side buckle with a certain tensile strength, soft plastic bag to prevent cause damage to the internal pipe laying hose lines exposed.
Stainless steel plastic coated metal hose, light weight, good flexibility and strength of the connection with accessories, electrical properties and oil resistance, flame retardant, splash water, etc., are widely used in electric power, chemical industry, metallurgy, light industry, machinery and other industries.

Metal pipe laying

Metal pipe laying :Dark metal tube set should meet the following requirements: embedded in the wall in the middle of the metal tube diameter should not exceed 50 floors in diameter preferably 15 ~ 20MM, 30 meters straight piping design dark box . Laid in concrete, cement inside Hydraulic ferrules metal tube, the foundation should be solid flat .Metal pipe connections, holes should be aligned , joints should be tight, can not penetrate the water and mud .Metal pipe should be not less than 0.1 % of the drainage slope .Buildings between the metal pipe laying depth of not less than 0.7 m ; laying on the sidewalk below , should not be less than 0.5 m .

Metal pipe connections

Metal pipe connections :Metallic tube connections should be firm, well-sealed , two ports should be aligned . A short sleeve or socket with a length of threaded Hydraulic hose fittings , not less than two times the outside diameter of the metal pipe . Copper pipe joints shall be securely connected to ensure a continuous electrical ground . Metallic tube connections should not be taken by way of direct butt . Metal tube into the junction box , the available tightening nut or threaded cap with fixed , exposed threaded tightening nut button 2 to 4 . Or the use of copper cups minister and comb knot to connect the metal pipe and junction box. But should ensure that the length of the junction box is exposed to less than 5MM.

Metal pipe bending

Metal pipe bending :In laying metal conduit should be to minimize the elbow , elbow each metal tube should not more than three , not more than two right angle bend , S bend should not occur , for larger cable cross-section allowed to have elbow , can be larger diameter pipe or additional cable box . Bending radius shall meet the following requirements: Ming Hydraulic tube fittings, generally not less than 6 times the tube diameter ; just a bend , from time to less than 4 times the diameter pipe ; whole row of steel pipe in the corner , should be bent into the shape of concentric circles . Ming piping, generally not less than six times the tube diameter , laid in the ground or inside the concrete floor , it should be not less than 10 times the tube diameter . Conduit bends should not wrinkle , depression and cracks , and the degree of bend flat tube diameter should not exceed 10% .

Metal pipe cutting threading

Metal pipe cutting threading :The pipe should be based on the actual needs of the length of the pipe to be cut . Use a hacksaw , pipe cutters or electric pipe cutting machine , do not use gas cutting .Pipes and pipe connections, pipe and junction boxes , wiring boxes connected to Hydraulic adapters both ends of the tube needs to threading . Sleeve silk silk panels or tubes used electric pipe threader machine . Complete sets of silk , it should immediately clean the nozzle, the nozzle end and the inner wall light burr file with a file , so that the nozzle remains smooth , to avoid breaking the cable sheath .

Dark metal pipe located on the following requirements of the construction

Dark metal tube construction located on the following requirements : 1. Metal pipe clamp fixed applications , the spacing between the support point should not exceed 3 meters. 0.3 meters away from the junction box office, the card will use the tube pipe fixed . In the elbow where both sides have fixed .
2 cable and cable with pipe laying, shall be within the pre- plastic -tube underground pipe . The cable laying pipe in the child , so that separate cables and cable laying , the outer diameter of the tubes should be 2.5 times the cable diameter . 3 When the weak and the strong electrical conduit pipes laid in parallel , you should try to keep a certain distance between the two to 13CM or so. 4, when the line specified with , the bending radius of not less than 6 times the tube diameter , when only one between two junction boxes is bent, the bending radius of not less than 4 times the pipe diameter . 5 horizontal vertical distribution lines laid out protection tube, its horizontal and vertical mounting tolerance of 1.5% , a total length of Dacron tube diameter deviation should not exceed 1 / 2.6 . Pipe should not be folded flat and cracks , the tube should be no iron and burrs , cutting off the mouth should be smooth, the nozzle should be smooth . 7 thin wire threaded pipe connections must be connected to the pipe threading length joint length of not less than 1/ 2 , should be added to both ends of the pipe joints across the ground wire ( not less than 4 mm2 copper wire ) 8 . concrete floors, walls and brick structures of the various information points concealed junction box and pipe connections shall be forced mother fixation. 9 Concealed inside the junction box with concrete requirements with wet cement paper or plastic foam filled inside , not the outside wrapped with cement . Embedded in the floor, walls inside the pipe , junction boxes should be fixed firmly to prevent displacement.
10 When conduit is connected directly to the device , the device should be laying pipe junction box ; when the pipe is connected indirectly with the device should be added wire protection hose or flexible metal protection tube ( metal hose ) connection ; optional Hydraulic tube fittings shall not use metal hose as grounding .11 galvanized steel or flexible metal wire protection tube jumper ground wire should be grounded using a dedicated line card jumper should not be used welding connection. Ming steel tube should be neat and fixed-point spacing should be uniform , steel pipe card should meet the maximum distance between the specification requirements : Pipe cards and terminals , elbows midpoint , electrical appliances or junction box ( box ) .
12 should be from the edge of 150-500 mm , the middle tube card maximum spacing : thick-walled steel pipe DN15-20 is 1.5 m , thin-walled steel pipe DN15-20 is 1.5 m , ceiling pipe should be laid out inside the pipe requirements of the construction .
13 pipe threading pipe before the water and debris should be cleaned , the wire in the tube may not have Hydraulic hose fittings, joints should be carried out in the terminal box , plastic should be added at the nozzle tip guard , different circuits , different voltage levels, AC and DC conductors shall not penetrate the same root canal .
14 tubing through the building expansion joints , expansion joints at both ends should remain grounded junction box and bolts.

Residential construction metal pipe laying

Site processing shall meet the following requirements: In order to prevent cable wear scratches cables, nozzle should be no thorns and sharp edges . To reduce the processing tube straight tube mouth when subsidence shear force on the cable , the mouth should be made ​​of metal pipe flare . After bending metal tube should not have cracks and obvious Hydraulic adapters phenomenon . If the degree of bending is too large, will reduce the effective diameter line pipe , causing difficulty in threading . Metal pipe bending radius of not less than the minimum allowed penetrate the cable bending radius . Galvanized pipe coated with zinc coating anticorrosive paint flaking Department should , in order to increase service life.1 . Metal tube processing requirements.2 . Metal pipe cutting threading : .3 . Metal pipe bending : . 4 . Metal pipe connections :5 . Metal pipe laying :
6 . Dark metal pipe located on the following requirements of the construction

Structure and properties of corrugated metal hose

Corrugated metal hose ( short hose ) is a modern industrial pipeline a high quality flexible pipe . It mainly consists of bellows, nets and joint components. Its inner tube is a spiral or annular waveform walled stainless steel bellows , bellows outer nets, is made of stainless steel wire or woven according to certain parameters . Hose Jic hydraulic fittings or flanges at both ends of the pipe joints with customers or flange mating .Bellows hose is made of very thin-walled stainless steel seamless or longitudinal weld precision plastic processing after forming . Because the elastic property of the bellows determine the contour hose has good flexibility and fatigue resistance , making it very easy to absorb deformation and cyclic loading various sports , especially in the piping system has the ability to compensate for a large amount of displacement . I plant in addition to the original hose sophisticated production equipment, recently introduced from Japan two high-precision , high-tech molded bellows automatic welding production lines, greatly improved the quality of the hose and the hose length is not produced limits , to meet the needs of long hose . Dawn brand hose nominal diameter range of DN4-800mm, length optional. Nets are installed in the pressure line hose main pressure parts , while the bellows from the sheath effect, according to the size of pipeline pressure and locations , you can select one or more layers of stainless steel wire or steel strip weaving, dawn brand hose pressure range is generally PN0.6-32.0Mpa. Up to 42.0MPa. The production of the main part of the material hose is the use of austenitic stainless steel , thus ensuring the hose excellent in heat resistance and corrosion resistance of the hose very wide temperature range , is -196-600 degrees to hose by pipelines through the media choose to apply corrosive stainless steel grades, the corrosion resistance of the hose can be guaranteed . Corrugated metal hose has good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance , and many other features, it is relative to other hoses ( rubber, plastic hose ) much higher lifetime would therefore it also has a high overall economic efficiency . With the development of modern industry , for high temperature, high pressure hose corrugated metal demand is also getting bigger . Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas , air, heavy oil, petroleum, chemical -pharmaceutical etc apply.

Metal hose applications industry

 Metal hose applications industry 1, metallurgical industry, metal hose is gradually transition to competition from product performance competitive cost performance, product structure in shape, the metal hose industry applications has been widely recognized.2, the petrochemical industry, the situation is relatively complex, on the one hand, large-diameter high-pressure hose and tank drain hose central market demand is growing, and new product development in the field of domestic far failed to put in place. On the other hand, some other occasion hose has appeared the phenomenon of alternative products such as dock appearing on the market with a non-metallic conduit tube (light weight, pressure fit). As the petrochemical industry is now the largest domestic market hose, various competitive in this field, input cost of new product development in this area is also larger.3, railway locomotive industries.Hydraulic pipe fittings As used by the Ministry of Railways information required on the form of a composite hose made ​​stereotypes provisions will not be great changes in the product mix in recent years, mainly manifested as price and service competition. But in the long term, the use of complex conditions, the uncertainty of the composite hose damage from abroad perspective of the development of the industry hose, metal hose being replaced is inevitable, so the product development is still far from over.4, shipbuilding industry, product testing by the Society in addition to need, but no special technical performance requirements, but according to foreign domestic data, its market demand is also huge.5, civil construction, irrigation installation and other industries, in addition to some of the stereotypes of the hose outside (such as plumbing, etc.), thick-walled tube instead of the trend of domestic elbow yet developed, according to Japanese data show that as much as their domestic water heater application prospects hose market.

Stainless steel pipes instead of water supply pipeline has become the trend of other materials

As more and more high buildings, high-rise buildings in the drinking water and fire water delivery systems have special requirements, the system must not only be able to withstand high pressure but also caused by the earthquake and the building of wind movement. Engineers are with stainless steel piping system meets these requirements. The world's newest and tallest 3 buildings (China Taiwan Province, Taipei Financial Center, Brisbane, Australia Oro Plata Building and Kuala Lumpur Petronas Twin Towers) is the best illustration of this to the high pressure stainless steel pipe Hydraulic tube fittings.In the past 25 years the German drinking water extraction, treatment and distribution systems made ​​of stainless steel has been growing widely recognized. Stainless steel tube is not only smooth luxury, look as new, and is widely recognized as a leading environmental health water supply pipes. The strength of austenitic stainless steel pipe carbon steel pipe 2 times, 4 times brass, PPR plastic pipe 8 times, is truly safe and reliable and can be done with the building with life green pipe. Another major use of stainless steel piping is - the life cycle cost of stainless steel components has obvious advantages, because the long-term infrastructure such as drinking water means the use of a stainless steel, you rarely need to be replaced.Although stainless steel drinking water systems in the world, the universal application will take some time, but in the engineering and economic aspects of stainless steel has the advantage over other alternative materials have shown that: instead of other materials with stainless steel pipe water pipe has become a trend.

Metal hose Application Performance

Closed metal hose has high acid and alkali, high temperature, flexible bend freely and specifications are complete, easy to install, maintenance free, long life characteristics. Applicable to any environment, various types of metal cutting machinery and equipment are applicable. Corrugated metal pipe is a modern industrial pipeline a high quality flexible connecting tube. It mainly consists of metal bellows, metal mesh and various different forms of joint components. It is a spiral-shaped corrugated inner tube or Hydraulic pipe fittings  annular corrugated thin-walled stainless steel bellows, bellows outer sleeve made ​​of stainless steel wire mesh or stainless steel woven according to certain parameters. Hose connectors at both ends of piping or equipment in accordance with the user's joint form prepared.Corrugated metal hose has good flexibility, fatigue resistance, high temperature resistance, corrosion resistance, and many other excellent features, it is relative to other types of hose (rubber hose, plastic hose) lifetime is much higher, with the the development of modern industry, resistant to high temperature, high pressure, corrosion-resistant corrugated metal hose is increasingly widely used. Gas stove with gas vent pipe connections, use that is resistant to corrosion, oxidation of the metal hose. Metal hose with threaded connection as long as the stove is connected, you can use the seal will not install due to human causes leaks, and ease of installation.

Special features of the metal hose

Metal hose is an important engineering technology connecting member by corrugated flexible tube, a combination of nets and fittings. In a variety of gas, fluid piping systems as well as length, temperature, position and angle compensation systems as compensation components, sealing elements, connecting elements and a damping element, used in aerospace, petrochemical, mining, electronic, mechanical shipbuilding, medical health, textile electronics, energy and construction fields.Austenitic stainless steel metal hose material or materials required by the user, with excellent flexibility, corrosion resistance, high temperature resistance (-235 ℃ ~ +450 ℃), high pressure resistance (up to 32MPa), the tube path can be connected in any direction, for temperature compensation, and absorb vibration and reduce noise, change the medium conveying direction, remove pipe or between pipes and the mechanical displacement devices, double flange metal corrugated hose to a displacement, vibration a variety of pumps, valves and other flexible joints is particularly Hydraulic ferrules.Hose metal hose is installed in the pressure line of the main pressure parts, while the bellows from the sheath effect, according to the size of pipeline pressure and locations, you can select one or more layers of stainless steel wire or steel for weaving, hose pressure range is generally PN0.6-32.0Mpa. Up to 42.0MPa. The production of the main part of the material hose is the use of austenitic stainless steel, thus ensuring the hose excellent in heat resistance and corrosion resistance of the hose very wide temperature range, is -196-600 degrees to hose by pipelines through the media choose to apply corrosive stainless steel grades, the corrosion resistance of the hose can be guaranteed. Corrugated metal hose has good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance, and many other features, it is relative to other hoses (rubber, plastic hose) much higher lifetime would therefore it also has a high overall economic efficiency. With the development of modern industry, for high temperature, high pressure hose corrugated metal demand is also getting bigger. Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas, air, heavy oil, petroleum, chemical-pharmaceutical etc apply.

Metal hose pavement construction requirements

Metal hose construction, the use of sub-construction method, previously used in the original arch culvert base angle side by side two, the length determined based on long culvert. Culvert advance for the rails, corrugated culvert pipe diameter according to project needs may have different specifications, ready to pipe diameter of 0.5m - 2.5m; each section of pipe length 3 meters. Using internal (external) flange bolts. Assembled pipe diameter of 3m - 8m. Each circumferential direction 4 --- 15 plates, lap board and the board strength bolts tightened. If Han longer than 30 meters, the corrugated culvert culvert sides of the original width of less than 80cm, length 3m-6m may be downstream or upstream culvert advance toward the one end, in place later, it can be fixed to the top of the sheet rock masonry end wall, the other end of the corrugated culvert culvert with sandbags or the distance between the mortar and stone block, width 50cm, then start filling. Both sides of the law can be dense or coarse watertight concrete pouring Vibes tamping; top with high-pressure pumping expansive cement mortar. This section tube four weeks after they have finished filling the second pipe shipped to carry two connections, corrugated culvert pipe are connected to the inner flange bolting, workers in the pipe connection. After connecting to the same method as backfill. In this order, to complete the construction of the entire road corrugated culvert work. Metal hose adapter, according to the selection of electrical equipment into the cable connector metal hoses and metal hose fittings, metal Hydraulic hose fittings according to the size of the transition metal hose connector panel mounted connector and metal hose, so that the whole system is naturally smooth; transition joints can either press the need to produce at the construction site can also be mass-produced in the factory according to standard parts, with the use of promotional value; cable can extend the life of the cable to be effective in preventing injury leakage and other external forces generated security incidents.

The role is a hose

Metal hose used for automated meter signal wire protection tube and instrument protection tube. Instrument for the protection circuit, protecting precision optical ruler to protect the sensing lines Hydraulic tube fittings stainless steel hose, metal hose electrical protection; stainless steel hose, good softness, dustproof, waterproof, anti-oil, anti-rust; abrasion resistance, and provide some shielding effect.The sensing for precision optical ruler line protection, industrial sensor circuit protection. Has good flexibility, corrosion resistance, high temperature resistance, abrasion resistance, tensile strength.

Hose connector ferrule Precautions

Sleeve type hose connector has a simple structure , easy to use and do not have the advantages of welding . But in the high-pressure hydraulic system, if the improper operation will often cause leakage , affecting its widely used. After years of practice I summed up some experience , and achieved good results. Card sets of pipe joints mainly by a 24 degree taper hole connector body 1, with a sharp inner edge of the card sets 2 and play the role of compression nut 3 compression of three parts . Tighten the nuts 3:00 , lined butterfly valve ferrule 2 is advanced 24 degree taper hole and subsequently deformed, so that the card with the connector body cone sleeve forming spherical contact seal ; Meanwhile , the card edge embedded steel inner sleeve 4 the outer wall of the outer wall of the pressure out a ring groove , which play the role of a reliable seal . The best choice for stress relief annealing steel pipe 20 # fine extubation , it is a good card kit blade embedded in the outer surface of steel pipes , play a reliable seal.( 1 ) pre-① hose connector ferrule is the most important part of the pre-installed , directly affects the reliability of the seal . Generally require a dedicated preloader . Small diameter connector can be pre-installed in a vise . In practice, as the parent with a joint body , the nut , ferrule can be pressed onto the tube . There are card sets straight couplings , sleeve type end through turn heads, ferrule Hydraulic pipe fittings  and other types . I found that even with the same manufacturer 's batch of goods , these types of joint body tapered hole depth is often not the same , the result is caused by a leak , and this problem is often overlooked. The correct approach should be, what kind of pipe end connector body connection , the corresponding connection terminal is preloaded with the same type of connector , so to avoid possible leakage problems .② pipe end should be flush . After sawing the pipe should be flush grinding wheel and other tools , and deburring , cleaning with high-pressure air to blow before use.③ pre-installed , you should try to keep the tube and the coaxial connector body , if the pipe deflection is too large will cause seal failure.④ preloaded force should not be too large. Should make the inner edge ferrule tube wall just embedding , card sets there should be no significant deformation . During pipeline connection, then the provisions of the tightening force assembled . φ6-10mm ferrule tightening force of 64-115N, φ16mmr 259N, φ18mm for 450N. If the pre- deformed when the card holder will lose the seal.( 2 ) prohibits adding sealant filler. It was sealed in order to achieve better results, apply sealant put on the card , the results sealant being washed into the hydraulic system , causing the hydraulic components orifice blockage failures.( 3 ) when the connecting pipe , the pipe should have a sufficient margin deformation , to avoid the tube subjected to tensile stresses.( 4 ) connecting pipe should avoid subjecting it to lateral forces , lateral forces caused Mifengbuyan over the General Assembly .( 5 ) When connecting tubes , one should bear in good, avoid multiple disassemble , otherwise it will seal performance deteriorated.

Metal hose connector structure and properties of introduction

Metal hose connector is a modern industrial pipeline a high quality flexible connecting tube . It mainly consists of metal hose , metal mesh and various different forms of joint components. It is a spiral -shaped corrugated inner tube or annular corrugated thin-walled stainless steel bellows , bellows outer sleeve made ​​of stainless steel wire mesh or stainless steel woven according to certain parameters . Hose connectors at both ends of piping or equipment in accordance with the user 's joint form prepared . Hydraulic hose fittings Bellows hose is made of stainless steel seamless or longitudinally welded stainless steel thin walled tube through precision molded plastic deformation . Bellows hose contour determines the elasticity of softness and fatigue resistance , easy to absorb all kinds of sports deformation and cyclic loading , especially to meet the system larger displacement compensation . Metal hose has good flexibility , fatigue resistance , high temperature resistance, corrosion resistance , and many other excellent features, it is relative to other types of hose ( rubber hose , plastic hose ) lifetime is much higher, as development of modern industry , resistant to high temperature , high pressure , corrosion-resistant corrugated metal hose is increasingly widely used.Line pipe , black, galvanized iron pipes ( water , gas pipes ) ;

Sleeve type metal connector structure and characteristics

Sleeve type metal connector structure and characteristics:DKJ card sets metal hose connector , can non-threaded steel pipe and hose connections , save the threading process , you can simply screw into ;Metal joints made ​​of zinc alloy die-casting , zinc plated , brushed , or chrome ; compact structure , high strength. Steel and metal hose Hydraulic tube fittings  connection , reliable, attractive appearance ;This metal connector for the card sets, metal hose is used to connect to non- threaded pipe above ;Metal hose adapter : JS type , JSH type , JSB type , JSHG type ;Adapter Pipe : thin steel wire tube , black, galvanized iron pipes ( water , gas pipes ) ;Use metal connector DKJ card sets , please note the connection pipe hose specifications, dimensions .