Manufacturing quality is poor

Manufacturing quality is poor(A) high-pressure hose is oil resistant rubber inner tube wall, in the middle of braided steel wire (steel braided hose) or winding wire (wire winding hose). Poor quality of the hose will appear: plastic wall of uneven thickness; steel braided too tight (wire stroke is small), too loose (steel travel large) or wire root too few; hose pressurized deformation (elongation, shortening or bending deformation) larger (national standard steel stroke control of plus or minus 3); airtight plastic outer lead wire corrosion poor (main manifestations: Lu steel); inner plastic seal is poor leaving the high pressure oil easily into wire layer; adhesion layer and layer of wires inadequate. The above conditions can cause the hose to withstand reduced, eventually appears at the wall of the weak burst. Especially in the inner layer, poor air tightness, then a pressure, it leaks, then the pressure directly burst.(2) high-pressure hose and connector assembly withhold the amount and mode selection withheld improperly. Or joint structure, material, size selection is unreasonable, can lead to pressure hose and fittings too tight or too loose, causing early damage joints. Assembly, if the withholding amount is too small, that withhold joints between the weight of too loose with the hose when under the effect of the  Hydraulic pipe fittingshose during the initial period there may emerge from the joint; withheld if excessive, then withhold joints and hose too tight, easily lead to the hose inner layer of localized damage, deformation, cracks, high pressure oil from the weak rupture directly into the layer of wires, and then he went along the gap between the wire coat tail ejected, or along the wires of the layer has been somewhere he went to build up, so that the outer plastic drum kits produced even rupture. Hose and connectors in the assembly, if the withholding too fast, easy to cause damage to the inner rubber layer and wire breakage, so that premature failure of the hose in use. In addition, the joint design is unreasonable, jerry, processing of poor quality, can also cause damage to the inner glue; if improperly fitting material selection, not reach high pressure hose assembly requirements. Will shorten the life of high pressure hose