accoding to requirement, we are experiece in manufacturing and designing.

production scope:

screw diameter: Φ 20- Φ 500
maximum screw length: 10000mm
barrel inner bore diameter: Φ 500
Depth of Nitrated Layer: 0.5-0.8mm
Hardness of nitration: 900-1020Hv
Fragility of nitration: Less than grade 1
Surface roughness: Ra 0.4um
Hardness of Cr-coating Layer: ≥950Hv
Thickness of Cr-coated Layer: 0.03-0.08m
Hardness of Bimetallic Layer: HRC55-72
Depth of Bimetallic Layer: >2mm



we have diffirent designs of screw and barrel for extruder or unjection to meet customer's demand.
if there is any need, plese contact us freely.