Difference of PVC Water Supply Pipe and Drain-pipe

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PVC water supply pipe injection molding machine and PVC drainage injection molding machine, many customers will raise question that is not all PVC material? What is the difference of PVC water supply and PVC water drainage?

Hard polyvinyl chloride pipe shorted form PVC water supply pipe in water supply, it is regard PVC resin as the main raw material, add special Auxiliary, it extrusion molding by extruder. But it should adopt Low residual Vinyl chloride unit Hygienic grade PVC resin powder, at the same time it should adopt non toxic or low toxic (organic tin or low lead content) thermal stability system, to ensure the hygiene of the tube.

Differ in PVC water drainage, the pressure resistance of the PVC water supply is the main mechanics index, it is not only a mechanical equipment factor, but also a raw material and formula factor to affect the performance of the tube, but also the corresponding adjustment of the process. The space between extrusion screw

and barrel can not be too big; bigger feeding quantity and bigger compression ratio; design reasonable formula, and adjust the corresponding reasonable process, control the degree of plastic in the 60%-70%. Although the PVC pipe itself has more rigid and cold crushing performance excellent, 20 DEG C pressure ring stress may be greater than 36Mpa, is currently appearing on the market building plastic water supply pipe in the amount of the largest, but the high temperature and pressure of poor, it can only be used for 45 DEG C cold water or cold hot water pipe system.