... Supply,Gas Supply Pipe Extrusion Production LineThe HDPE,MDPE Large Diameter Wter Supply Pipe,Gas Supply Pipe Extrsion Preoduction Line developed by our ... pipeline.The production line is composed of control system,extruder,die head,sizing and cooling system,hauling machine,planet cutting ... -1400750SJ45/28 HDPE,MDPE Large Diameter Water Supply Pipe,Gas Supply Pipe Large Diameter Pe Pipe extrusion line