... have specialized in the field of injection and extruder machine parts. Our advantages: -screw and barrel for ... developing screw and barrel for more injection and extruder machine models - Main market: South America,Eastern Europe ... Assembly parts 8.Bimetallic Screw Barrel 9.Rubber screw barrel 10.Pin screw barrel 11 ... , etc.," is widely used in all kinds of rubber raw materials, such as: PE, PP, PVC, ...