... , work type, speed type, etc.," is widely used in all kinds of rubber raw materials, such as: PE, PP, PVC, PS ... of screw barrel type:1. injection screw barrel, injection Molding screw barrel,screw tips/screw nozzle,2.single screw barrel3. Twin screw barrel4. Twin Conical screw and barrel(Co-rotating,Counter)5. Twin Parallel screw and barrel Co ...