Brief introduction of PVC Pipe Extrusion Line :
Thanks to the three-layer co-extrusion die with spiral grooved core rod for option and the advanced technological prescription, the line is designed to produce PVC middle layer expanded pipe or PVC middle layer expanded pipe with screw-thread in wall. This kind of pipe features: Lower density 0.9-1.0g/cm3(while traditional pipe about 1.4g/cm3); Sound-proof, when used as drain-pipe, water flow against the screw in wall downwards, which solves the problem of noise.