... Pipe Making Machine, PVC Pipe Production Line, Plastic Machinery PVC Pipe Extrusion Line, UPVC, CPVC Pipe Making MachineSJSZ ... double-screw extruder, vacuum sizing platform, tractor, cutting machine, stacker, etc. The conical (parallel) double-screw ... main technique parameterParameter\ModelSJPGZ-250SJPGZ-400SJPGZ-630Main machine modelSJZ-65SJZ-80SJZ-92Maximum pipe specification(mm)250400630Cooling ...