www.cnydxs.com stainless steel metal hose common faults and an outer layer cause analysis of the problems (1) hose surface showing the crack surface showing cracks in the hose is the primary reason being bent hose in cold conditions. (2) hose hose bubbling surface surface surface surface rendering showing the reason is bubbling mass produced hose failed, perhaps the use of defective task. (3) hoses but did not break a lot of oil leaking hose break but did not find a lot of oil leakage, the reason is the high-pressure fluid through the hose, the plastic is erosion, abrasion, a large area of ??leak until incur a lot of wire layers permeability. (4) hose tough outer layer transformation, presenting the appearance of microcracks which is the natural aging of the hose display. Because aging transformation, from time to time so that the appearance of the outer oxide layer to cover ozone, followed by efforts to extend and thicken, the hose was only in the use of subtle bending occurs when tiny cracks. Encounter this situation, the hose should be replaced. 2 inner layer of the problems (1) hose layer rugged and crack: The primary reason for participating in the finished rubber plasticizers, flexible plastic hose. But hose overheating, make plasticizers overflow. (2) the hose layer severe decay, swollen clear: the hose layer grim transformation, the reason is clear swollen rubber hose material is not compatible with the hydraulic system oil, chemical effects and the hose was transformation. 3 shows the problems of high pressure hose enhancement layer (1) hose break, break near rusty steel braided hose break, strip the outer layer introspection, woven wire rust was found near the break. This is because the primary effect of this layer by wet or corrosive substances caused by weakened hose strength, while incurring high pressure rupture. (2) hose enhancement layer is not rusty, but showed irregular enhancement layer broken wire scene. Hose rupture, stripped the outer layer of rust enhancement layer is not found, but the length of the enhancement layer is not biased presentation rules broken wire, hose was the primary reason is the effect of high-frequency impact. 4 shows the large diameter hose fault rupture in the mouth (1) hose at one or more break, rip uniform, other parts of the stick is superior. The primary reason for the onset of this scene is the system pressure is too high, beyond the hose can withstand. (2) to change the hose rupture at presentation, the onset of this phenomenon is the reason to change the fire hose was caused by the installation or use of the process.