Eight Quality Standards of PVC Lay Flat Hose?

1. The fabric layer of PVC Lay Flat Hose should be knitted evenly and the surface should be neat; no jump double warp, broken double warp, jump weft and scratch.
2. PVC Lay Flat Hose lining (or coating) should be uniform in thickness, smooth and smooth in surface, free from wrinkles or other defects.
3. The nominal dimensions and tolerances of the inner diameter of PVC Lay Flat Hose meet the requirements.
4. The length and dimension tolerances of PVC Lay Flat Hose meet the requirements.
5. PVC Lay Flat Hose’s design working pressure and withstanding pressure value are not less than the stipulation.
6. The design working pressure is 0.8 MPa, 1.0 MPa, 1.3 MPa and 1.6 MPa. The quality of the unit length of PVC Lay Flat Hose does not exceed the stipulation.
7. The design working pressure is 2.0 MPa and 2.5 MPa. The quality of the unit length of PVC Lay Flat Hose does not exceed the stipulation.
8. The design working pressure is 0.8 MPa, 1.0 MPa, 1.3 MPa and 1.6 MPa. The axial elongation and diameter expansion should not exceed 5% under the design working pressure. The design working pressure is 2.0 MPa and 2.5 MPa. The axial elongation and diameter expansion of PVC Lay Flat Hose should not exceed 8% under the design working pressure.
PVC Lay Flat Hose can be divided into PVC Lay Flat Hose with lining and PVC Lay Flat Hose without lining according to materials.
Unlined PVC Lay Flat Hose has low pressure resistance, high resistance, easy to leak, easy to rot, short life, and is suitable for laying in the fire field of buildings.
PVC Lay Flat Hose with lining fire protection has high pressure resistance, abrasion 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 external fire fields.