Size:
☆Screw Diameter:Φ20-Φ500mm
☆Maximun screw length: 10000mm
☆Barrel inner bore diameter: Φ500mm
☆ Depth of nitration case:0.4-0.7mm
☆ Hardness of nitration:HV900-1060 (HRc56°-65°)
☆ Roughness of the surface:Ra 0.4μm
☆ Screw straightness: 0.015mm/m
☆ Chrome plating thickness: 0.01-0.1mm
☆ Suitable plastic material: PP, PE, ABS, AS, PS etc.
☆ Material: SACM-645, SCM440, 38CrMoALA