product name: 65/132 Foaming Screw 6 sections 6 heads

classification: Come Twin Foaming Screw Material Special Barrel Screw

Screw Cylinder Material:38CrMoAIA
Cylinder Alloy Length:250mm
Screw Alloy Length:300mm
Screw Cylinder Alloy Depth:0.8-2.0mm
Hardness after Adjustment: HB260-290
Nitridation Depth:0.50-0.70
Surface Hardness atter Adjustment: HV940-1050
Screw Straightness:0.015
Cylinder Straightness:0.05mm
Cylinder Concentricity: Above 90%
Cylinder Centrad:0.05mm
Make Section Bar, Tubing, Prling