Shanghai Plastic Pipe Fittings Technical Specifications

According to the Shanghai Chemical Building Materials Association, Shanghai has formulated the “Interim Technical Requirements for Building Plastic Pipe Fittings”.

"Technical requirements" for polypropylene (PP), polyethylene (PE) and cross-linked polyethylene (PEX) hydraulic test, pendulum impact, elongation at break, oxidation induction time, longitudinal shrinkage and crosslinking degree The item has made specific stipulations: the standard outer diameter of the aluminum-plastic composite pipe pressure pipe, the radial tensile force of the pipe ring, the blasting strength, the working pressure, the bond strength, the static internal pressure strength and the cross-linking degree index have been clarified; Vinyl chloride drains also have specific indices for tensile yield strength, Vicat softening temperature, flat test, drop weight impact test, longitudinal shrinkage and density.

The "Technical Requirement" also states that aluminum-plastic composite pressure pipe (butt welding) products should be clearly indicated in the product symbol, and the inner and outer layers should be cross-linked materials and the degree of cross-linking should be clearly stated.

Acrylonitrile butadiene styrene pipes and fittings can only transport cold water and cannot be used for hot water delivery. For other construction plastic pipes, including hard PVC (PVC?U) water supply pipe fittings, high-density polyethylene (HDPE) pipe, aluminum-plastic composite pressure pipe (lap welding) and other products, "Technical Requirements" pointed out that According to the current national and industry standards, enterprises are encouraged to implement corporate standards that exceed national and industry standards. The fittings for aluminum-plastic composite pressure pipes and cross-linked polyethylene pipes shall be provided at fixed points. The supporting units shall be responsible for the fixed-point supporting product quality and the pipe production units. The pipe production units shall be responsible to the users.