... pipe making process 1.Pipe diam:16-315mm 2.Warranty:2years 3.CE ISO9001 passed 4,price:17,000-66,000$ 1.PVC pipe ... is mainly used in the production of double PVC pipe water drainage pipe, electric conduit, etc., conical twin-screw extrusion equipment ... gearbox, beautiful appearance, smooth operation, the noise is small,The machine adopts copper aluminum heater, wind cooling system, heating, cooling ...