Crafted with a bimetallic alloy layer thickness of 1.8–2.2mm, this screw barrel is designed for PVC, PE, and PP extrusion. It offers superior resistance to chloride corrosion and abrasive filler wear. Tested to operate stably for over 30,000 production hours without deformation. Hardness reaches HRC 62–65. Recommended for high-volume plastic pipe, profile, and sheet production environments.