We can supply and design all kinds of Single Screw & Barrel For Plastic injection Machine according to your requirement. We use advanced numerical control and computer control processing device to process screw. Single Screw and Barrel Raw Material The Finnished Product Processing Requirments 38CrMoAla, SACM645, 42CrMo Nitriding Treatment 42CrMo, AISI4140 Hard chrome coated layer Cr12MoV, SKD11, SKD61, YXMI, EFZD,DC53, SKH55, SKH59, SKH58, SKH51, SKH-9, ASP60, ASP25, CW6Mo5Cr4V2 High frequency quenching 4Cr5MoSiV1, SKD-61, SKD-11 Spraying bimetal alloy layer and nitriding treatment YPT72, DAC-MAGIC, 4Cr5MoSiV1 whole bimetallic cladding stainless steel HPM38, SI36, SUS440, 9Cr18MoV High frequency quenching Technical standard : 1.Material : 38CrMoALA 2.Hardness of modulator . HB260-290 3.Hardness of nitrification : 800-1050HV 4.Depth of nitrification layer : 0.4-0.7mm Double-alloy technical standard: Double-alloy level : 1.Level A - containing tungsten of 40% 2.Level B - containing tungsten of 25% 3.Level C - containing tungsten of 9.5% 4.Hardness of alloy : HRC56-65o Applied scope of plastic :applied for PVC and WPC material, has a high output and stable performance . 1.Components of alloy powder :Ni + Co + Cr + W + Si + Fe + B + C 2.Depth of alloy layer : 1.2mm-2.0mm 3.Hardness of alloy :HRC>65o Two stage type of barrel (material of powder outlet is Cr12MoMV, vacuum quenching) and screw (powder output is treated by alloy), the using lifespan is long as twice as common ones. The twin screws and barrel can be equipped in differents.