High pressure hose for the oil and rubber inner wall

High pressure hose for the oil and rubber inner 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 ;Hydraulic pipe fittings  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.