... 1.Carbide alloy screw barrel for plastic screw extruder 2.Nitride,bimetallic,chrome 3.Wear-proof,long uselife 4.ISO9001-2008 Carbide alloy screw barrel for plastic screw extruder Techincal Advantages ... Standard Packing: Exhibition experiences: CERTIFICATION: We OSD SCREW can make any specification of extruder screw barrel and injection screw barrel for Haitian, Demag, Engle, Klauus-maffei, Cincinnati ...