Injection Screw Barrel

The screw and barrel for injection machine

Details
Material: Alloy-Steel of High-Quality  Heat-treatment 
          1) 38CrMoAlA(JIS SACM645)    Nitriding treatment 
          2) 42CrMo(AISI 4140)         Electroplated hard-chrome 
          3) Cr12MoV(JIS SKD-11)       High-frequency quenching 
          4) 4Cr5MoSiV1(JIS SKD-61)    Spray coating Bimetallic-alloy