plastic extruder screw and barrel

Specifications screw and barrel for extruder machine of high quality

Size:screw diameter:20-500mm         maximum screw length:10000mm         barrel inner bore diameter:500mm Material:38CrMoAlA               40CrMo               42CrMo               high quality alloy steel Technical standard:               nitriding treatment               alloy coating spraying               heating treatment               screw fully hardening Depth of nitrition layer:0.5-0.8mm Nitriding treatment ,surface hardness :HV≥900-1000 Fragility of nitrition:less than grade 1 Surface roughness:Ra0.4um Streightness of screw:0.015mm Surface of hardness of nitrated Cr coating layer:≥950HV Hardness of coating layer:HRC55-62 Thickness of alloy plating:0.03-0.08mm Depth of alloy layer:2mm Appliance:PP,PE,PA,PC,ABS,ASetc We can manufacture various kinds of screw barrels according to your requirement     Production field   exhibition show