conical twin screw and barrel for PVC pipe ,profile ...

Conical twin screw and barrel

Material :High quality alloy steel

1)38CrMoAlA

2)42CrMo

3)9Cr18Mov

Technical index

Size:Screw OD:35mm-200mm length:≤10000mm

Barrel ID:35mm-200mm

Depth of Nitrated Layer:0.5-0.8mm

Hardness of nitration:less than grade 1

Surface Hardness of Nitrated Cr coating layer ≥950Hv

Thickness of Cr-coating layer:0.03-0.08mm

Technology:nitriding treatment ,alloy coating spraying ,heat-treatment,Bimetallic alloy coating

Use in:PP,PE,PA,PC,ABS,AS etc