Blow film extrusion screw
Keyword: blowing film screw barrel
Hardness of Nitration:950-1020Hv
Fragility of Nitration:Less than grade 1
Surface Roughness: Ra 0.4 um
Streightness of Screw:0.015mm
Surface Hardness of Nitrated Cr coating Layer:>=950Hv
The Thickness of Cr Coating Layer: HRC55-62
Hardness of Alloy Plating:0.03-0.08mm
Depth of Alloys Layer: >2mm
Introduction: Used for LDPE, HDPE, LLDPE, widely applied in packing of fruit ,food, clothes,and texile products.
We can all types of screws and barrels according to clients’ requirement.
Depth of Nitration Layer:0.5-0.8mm
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