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parallel screw and barrel

Type of posting Offer
Category Other Welding & Soldering Supplies
City / Port Beijing, CN, China
Description parallel screw and barrel


Depth of nitration layer: 0.5-0.8mm

Hardness of nitration:950-1020HV

Fragility of nitration: less than grade 1

Surface roughness: Ra 0.4um

Streightness of screw: 0.015 mm

Surface hardness of nitrated Cr coating layer ≥950Hv

The thickness of Cr coating layer: 0.3-0.08mm

Hardness of alloy plating : HRC55-620

Depth of alloys layer: 2mm


Used for producing PA, EVOH, EAA,PC etc.

We can produce all kinds of screws and barrels according to your requires!
Date 2009 Dec 12, 04:12