Screw Barrel, Twin Conical Screw and Barrel, Twin Parallel Screw and Barrel manufacturer / supplier in China, offering Battenfeld-Cincinnati 114mm Twin Parallel Screw and Barrel for PVC, High Wear Resistance 65/132 Twin Conical Screw and Cylinder for WPC Profiles, 65/132 Bimetallic Screw with SKD Bush Barrel for HDPE+WPC and so on.