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Double alloy screw barrel

Product details


Screw diameter: 15-300mm

Large length: 8000mm

Inner diameter of barrel: 15-300mm

Large length: 4000mm


Different alloy materials can be selected according to different raw materials


Base material:

1)38CrMoAlA(JIS SACM645)

Alloy material:

1) Nickel base alloy+tungsten carbide



Treatment process:

heat treatment

Nitriding treatment

Spraying bimetal alloy

Centrifugally cast bimetallic alloy


Technical parameters:

Nitriding depth: 0.50mm-0.80mm

Nitriding hardness: 58-62HRC

Surface roughness: Ra 0.4

Screw straightness: 0.015mm

Double alloy depth: 3mm