... hard Cr 3spraying wear-resis Specifications of this conical twin-screw and barrel: Φ45/90 Φ45/100 Φ ... layer thickness:0.01-0.10mm, twin-alloy hardness:HRC60~70, twin-alloy depth:>2mm, Screw edges are ... made by twin-alloy which could improve screw's using ... PE, ABS, PVC, pelleting,pipe,special-shaped,plate,sheet,wood-plastic. Because every customer's different requirement,please ...