Zhoushan Zhongyang Screw Manufacturing Co., Ltd. [China]

Detailed Product Description

Conical double screw for rubber roller-head extruder in many specs.OEM

and design service are available.

Abrasion resistant and corrosion resistant

Material:High quality alloy steel
1)38CrMoAlA
2)42CrMo

Technics:1)Heat-treatment
2)Nitriding treatment
3)Vacuum quenching
4)Bimetallic alloy coating spraying