... LineThe HDPE,MDPE Large Diameter Wter Supply Pipe,Gas Supply Pipe Extrsion Preoduction Line developed by our company ... ,extruder,die head,sizing and cooling system,hauling machine,planet cutting device,and turning rack.The extruder ... lastest designed basket type die head or spiral split type pipe extrusion compounding die head,which has characteristics ... large calibre PE water and gas pipe machine