ZS-series multi-function extrusion line for PVC pipe is developed based on the foreign technique and actual local situation, which is highly automatically controlled and is ranking at the leading position domestically. PVC pipe has been holding a big share in the market, which is used as pressured pipe and non-pressure water discharging pipes, including fresh water supply, low pressure pipe water discharging pipe for building, drainage pipe and cable protection. We supply conical twin screw high-efficiency extruder (SJZ45/90---SJZ100/200) and parallel conical twin screw extruder (SJP75/26----SJP130/26-33), the output rate reaches up to 1200KG/H. To realize high amount of additive calcium(CaCO3), the ZS-series screw and barrel are made with special material BEXALIT, which is greatly wear-resistant and it, s bimetallic material, so its service life is very long. The dovetail-shaped spider structural mould is available for PVC extrusion, all kinds of PVC ranging among Φ 16-Φ 800mm can be produced if going with corresponding auxiliary device and belling machinery.