Conical extrusion,extruding,extruder twin-screw and barrel 1nitriding treatment 2electroplated hard Cr 3spraying wear-resist Specifications of ... this conical twin-screw and barrel: Φ45/90 Φ45/100 Φ50/105 Φ51/105 Φ55/110 ... common plastic,PP, PE, ABS, PVC, pelleting,pipe,special-shaped,plate,sheet,wood-plastic. Because every customer's different requirement,please ...