... steel 2.Good customer service bimetallic conical twin screw barrel for WPC profile production specification:35/76, 45/90, 45/100, 50/105, 51/105, 55 ... ,50-300 high Calcium Profile,soft PVC sheet, PVCfoaming boardetc.PP,PE,ABS,PVC,raw material pelletzing,plastic pipe,plastic profile,and plastic sheet etc.