Injection screw and barrel for JSW injection moulding machine Diameter 90mm Min.Order 1 set Materials 38CrMoAIA GH113 SKD61 Discount Available Application PE,PP,PS,HDPE, LDPE,MDPE,LLDPE Payment Term T/T, L/C Technical Process 1.Rough Machining 2.Quenching and Tempering 3.Finish Machining 4.Nitriding 5 Spraying and welding with alloy power 6.Screw polishing Technological Parameter Roughness Ra 0.4um Hardness of Quenching and Tempering ...