Screw for cast film line

Φ25-Φ250 the screws for casting film extrusion lines

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Description

Nitriding layer depth: 0.5-0.7mm Hardness of surface layer: HV960-1100
Bimetal screw: Hardness of alloy layer HRC>60 Alloy layer depth:1.22-2.03mm
Screw straightness:0.015mm chromium layer thickness:0.03-0.06mm
Surface finish:0.04Ra/um-0.08Ra/um L/D ratio:(23-30):1