Conical twin screw and barrel

Diameter：φ25／φ45～φ92／φ188 (according to the demands of customers) 

Screw material: 38CrMoAlA,special alloy can be welded on the flight of screw.

Barrel material: 38CrMoAlA,imported alloy steel can be used on feeding hole .

Nitriding layer depth: 0.5～0.8mm

Nitriding layer hardness: ＞950HV

Nitriding brittleness: ＜level 2

The compression ratio of screw can be desingned according to different raw material-s and requirements of clients.