... 4.relaible continuous production HDPE,MDPE Diameter Water Supply,Gas Supply Pipe Extrusion Production LineThe HDPE,MDPE Large Diameter ... system,extruder,die head,sizing and cooling system,hauling machine,planet cutting device,and turning rack.The extruder adopts enforced conveying ... die head is the lastest designed basket type die head or spiral split type pipe extrusion compounding die head,which ...