... extruder screw and barrel for plastic scrap screw barrel 1.Material:38CrMoALA,SACM645,SKD61 ... ,GH113 Plastic extruder screw and barrel for plastic scrap screw barrel Conical Twin Screw Barrel and Plastic ... -treatment Appliance: PVC, PP, PE, PA, PC, ABS, AS etc Depth of Nitrated Layer: 0.40-0. ... Profile,soft PVC sheet, PVCfoaming boardetc.PP,PE,ABS,PVC,raw material pelletzing,plastic pipe,plastic profile, ...