The series of SJPVZ pipe production line is mainly used for the production of various calibers and wall-thickness plastic PVC pipes which are applied to agricultural water-supply, construction supply, water-drain and cabling etc. The machine is made up of a cane-shaped double-screw extruder, a vacuum metering cooling water channel, a tractor, a slitter and a stirring-up shelf etc. The structure of the line is novel, and it can be easily operated. The degree of automation is high, which can meet the need of high-accuracy and high-grade of the plastic producing trade. Apoting foreign industrial technics, our company manufactured chlorinated polyvinyl chloride (CPVC) pipe production line recently. The kind of pipe is mainly used for producing various heat-resisting and corrosion-resisting plastic products such as hot water pipes (vicara 110℃), chlorine pipes, acid-transportation pipes, and direct-buried heavy pressure cable sheath pipes, etc.