Screw and barrel, screw caps, seat, rings for injection moulding machine Clamping force:25-3200tons Single screw and barrel for injection moulding machine:Clamping force:25 ... HRc56°-65°) Roughness of the surface:Ra 0.4μm Screw straightness: 0.015mm/m Chrome plating thickness: 0.01 ... wear-proof, corrosion-proof, heatproof, high-pressure proof and high-speed proofSuitable plastic material: PP,PE,ABS,AS, ...