conical twin-screw and barrel

Length-diameter ratio: L/D=4-40

Diameter specification:65,80,90,105,125,146,150,170,180,190,200

Material:1, 38CrMoAIA(JIS SACM645)

             2, 42CrMo(JIS SCM440)

             3, 9Cr18MoV

Heat treatment:

Nitriding treatment

Electroplated hard chromium coating

Spray coating anticorrosion

Wear resistant bimetallic coating