This PVC pipe extrusion line is designed with our new advanced technology and it is suitable for the production of PVC pipes, PVC flame-retardant pipes, water drain-off pipes, irrigation pipes, sound-proof drain-off pipes, (foam-core pipes and hollow pipes with screw-thread in walls), and multi-hole pipes for communication. This production line includes the conical twin screw extruder, the moulds and accessory machines.