Single Extrusion Screw Barrel

Screw diameter：Ø25~Ø250 Nitriding depth：0.5mm-0.7mm Bimetal screw：Alloy layer hardness HRC>60 Surface layer hardness: HV960-1100 Alloy layer depth：1.2mm-2.03 Screw Straightness：0.015mm Chrome plated screws : Chromium layer thickness：0.03-0.06mm Surface Roughness：0.04Ra/um~0.08Ra/um L/D：（23~30）：1