Conical Twin Screw and Barrel/Cylinder for PVC/WPC extrusion. Size: 45/90, 51/ ... barrel made from anti-wear alloy, can be improved abrasion performance.Nitriding treatment, surface hardness:HV≥ ... 900Nitriding depth:0.5-0.8mmscope of application: PVC+WOOD; PE+WOOD; Super high molecular sheet, ... 50-300 high calcium profile, soft PVC sheet, XPS-PVC etc; PP.PE.ABS.PVC.pelletzing, pipe, profile, sheet, ...