الوصف

Screw Diameter: Φ *0mm-Φ **0mm

Material: *8CrMoAlA; SKD*1; SKD*1; *0Cr; *2CrMo; High quality alloy steel

Technology: Nitriding treatment, alloy coating spraying, heat-treatment

Appliance: PVC, PP, PE, PA, PC, ABS, AS etc


Depth of Nitrated Layer: 0.**0.8mm

Hardness of nitration: *******0Hv











Fragility of nitration: Less than grade 1

Surface roughness: Ra 0.4um

Hardness of Cr-coating Layer: ≥ **0Hv

Thickness of Cr-coated Layer: 0.***0.*8mm

Hardness of Bimetallic Layer: HRC****2

Depth of Bimetallic Layer: >2mm

We can design the variety kinds of screw barrel according to customer's demand.