... ISO9001-2008 Carbide alloy screw barrel for plastic screw extruder Techincal Advantages of Bimetallic Nitrided treatment Paralllel twin ... material,etc Carbide alloy screw barrel for plastic screw extruder DiameterΦ15mm-Φ350mmDesigningScrew structure and compressionratio can be ... NPM, BOY, Husky, Fanuc, billion, Sumitomo, Nippon Steel, Toshiba, Nissei, Mitsubishi and etc. We also can supply all types ...