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 supply all types of screws and barrels according to clients’ requirement.