Specification :

Screw Barrel for Extruder Machine

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
Surface Hardness of Nitrated Cr coating Layer: e950Hv
Hardness of Bimetallic Layer: HRC55-72
Thickness of Cr-coating Layer: 0.03-0.08mm
Depth of Bimetallic Layer: > 2mm

Specifications of screw:

¦ 20-Æ 250 L/ D 15-50 We offer various types of extruder screws and adjust to different compression ratio, which can fulfill customer' s requirement perfectly.

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discuss your needs. In most case we can provide you with a complete solution to meet your demands