... uselife 4.ISO9001-2008 Carbide alloy screw barrel for plastic screw extruder Techincal Advantages of Bimetallic Nitrided ... , recylced plastic material,etc Carbide alloy screw barrel for plastic screw extruder DiameterΦ15mm-Φ350mmDesigningScrew structure and compressionratio ... barrel and injection screw barrel for Haitian, Demag, Engle, Klauus-maffei, Cincinnati battenfeld,Weber,Nigro bossi, arburg,NPM, ...