PVC lay flat hose is a hose for water conveyance at fire site. According to the material, it can be divided into PVC lay flat hose with lining and PVC lay flat hose without lining. Among them, non-lined PVC lay flat hose has low pressure resistance, high resistance, easy to leak, mildew, short life, suitable for laying in the fire field of buildings; lined PVC lay flat hose has high pressure resistance, wear resistance, mildew resistance, durability, and is not easy to leak, small resistance, can also bend and fold arbitrarily, move freely, easy to use, suitable for laying and connecting fire trucks in the external fire field. 。
Characteristics of PVC lay flat hose:
1. The fabric layer of PVC lay flat hose should be knitted evenly with neat appearance, without jumping double warp, broken double warp, jumping weft and scratch.
2. The thickness of PVC lay flat hose lining (or covering layer) should be average, and the appearance should be smooth, without wrinkles or other defects.
3. The nominal dimension and service of the inner diameter of PVC lay flat hose shall conform to the rules.
4. The length and size of PVC lay flat hose should conform to the rules in public service.
5. The pressure and withstand value of planned tasks of PVC lay flat hose should be no less than the rules.