80/156 twin screw barrel for extruder machine 

specification Base Material 1) 38CrMoAlA(JIS SACM645) 2)Cr12MOV(JIS SKD-11) 3) 4Cr5MoSiV1(JIS SKD-61) 4) 42CrMo(AISI 4140) Bimetallic Alloy Material 1)Fe-based alloy 2)Ni-based alloy/Deloro alloy 3)Co-based alloy 4)NiCo-based alloy 5)Tungsten carbide/Wolfram carbide Double-alloy Level Level A-containing Tungsten of 40% Level B-containing Tungsten of 25% Level C-containing Tungsten of 9.5% Surface Treatment 1.Heat treatment 2.High frequency treatment 3.Nitriding treatmen…