... machine *2:PVC pipe Extrusion lineThis production line is mainly used in the production of U - PVC, C - PVC, ... water supply and drainage pipes, etc. The set consists of conical twin screw extruder, vacuum shaping box, tractor, cutting machine, turn rack, ... material (cement, iron, ceramic) made of steel tubes, widely used in highway, municipal construction, residential area, playground, square, mining, ...