How to verify the quality inspection of plastic-coated PVC Lay flat hose?

In our life, plastic-coated PVC Lay flat hose is not only used in one aspect of fire protection, but also widely used in agricultural irrigation with our development. With the increasing number of PVC Lay flat hose manufacturers, there are also many differences in quality. Next, I will introduce the method of distinguishing the quality of PVC Lay flat hose.
1. The manufacturer of plastic-coated PVC Lay flat hose should strictly follow the standard of producing PVC Lay flat hose, and the blank of PVC Lay flat hose should be made of 20 crossed fibre and polyester yarns by knitting. The thickness is also required. It must be over 1.5mm. It is not allowed to be lower than this value in production.
2. The pressure must also be controlled above 0.6 MPa in the production of plastic-coated PVC Lay flat hose. The appearance of the produced PVC Lay flat hose is smooth. There are broken wires, drawing warp, loosening warp, inner and outer grooves, deforming pore and coating inclusions which are not qualified and can not be produced.
3. Agricultural plastic-coated PVC Lay flat hose should conform to the relevant production regulations of industry standards. PVC Lay flat hose billet material is made of 20 large chemical fibre polyester yarns knitted in cylinders, and its thickness must be over 1.5mm. No lower deviation is allowed.
4. The pressure of agricultural plastic-coated PVC Lay flat hose must be above 0.6 MPa with smooth and flat surface. There should be no defects such as broken wire, drawing warp, loosening warp, inner and outer grooves, deforming pore and coating inclusion.