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