... Production LineThe HDPE,MDPE Large Diameter Wter Supply Pipe,Gas Supply Pipe Extrsion Preoduction Line developed by our company has characteristics ... control system,extruder,die head,sizing and cooling system,hauling machine,planet cutting device,and turning rack.The extruder adopts ... 710SJ180/30800-1400750SJ45/28 HDPE MDPE Large Diameter Water Supply Pipe Gas Supply plastic pipe production line