... conical (parallel) double-screw extruder, vacuum sizing platform, tractor, cutting machine, stacker, etc. The conical (parallel) double-screw extruder and tractor ... PVC pipe extrusion line Parameter\ModelSJPGZ-63SJPGZ-250SJPGZ-400SJPGZ-630Main machine modelSJZ51/105SJZ-65/132SJZ-80/156SJZ-92/188Maximum pipe specification ...