plastic injection machine screw and barrel 1.Screw Diameter: 15mm-300mm 2.Material: 38CrMoAlA; ... kinds of rubber raw materials, such as: PE, PP, PVC, PS, ABS, PA, POM, PC, PSV, PTFE, PR, UP ... Bimetallic Layer: >2mmThe production of screw barrel type:1. injection screw barrel, injection Molding screw barrel,screw ... of Screw Barrel : PE PP PVC ABS PS plastic injection molding machine screw and barrel