45% Spherical Tungsten Carbide Bimetallic Barrel 

Brief introduction： HK7 HK7 Nickel Base +45% Spherical Tungsten Carbide Bimetallic Barrel Basic parameters： Hardness (HRC):60-65 Wear resistance:★★★★★★★ Corrosion resistance:★★★★★★ Temperature range (℃)：≤600 Scope of application： Application: Suitable for special high glass fiber ultra-halogen-free raw materials: 4T, 9T, HTN, DSM, PSM and various acidic plastics with high corrosion. Composition and process： Alloy composition: W, Cr, B, Ni