... Good customer service bimetallic conical twin screw barrel for WPC profile production specification:35/76, 45/90, 45/100, ... SUS440,9Cr18MoV high frequency quenchingGHII3nature hard after high temperatureFor Plastic profile (WPC) ExtrusionTechniccal parameter modelmotor powerscrew dia.(MM)screw ... ,50-400 high Calcium pipe,50-300 high Calcium Profile,soft PVC sheet, PVCfoaming boardetc.PP,PE,ABS,PVC ...