PVC pipe extrusion line extruder,die,calibration,stacker.. 1.By Siemens PLC control 2.Speed of Screw:1~35rpm Custom Design PVC pipe extrusion line(PVC Pipe Extrusion Line) SJSZ series conical twin screw extruder mainly composed of barrel screw, gear transmission system, quantitative feeding, vacuum exhaust, heating, cooling and electrical control components Etc. Products: of PVC plastic pipes, ...