Comressing rate of screw can be designed according to different raw materials and products.

1、Material：38CrMoAIA，Nitriding treatment，Surface hardness：HV900，Depth of nitration case：0.5-0.8mm。

2、Material：38CrMoAIA，The screw surface uses double alloy welding to effectively increase the service life of the screw.

3、Material：38CrMoAIA，The easy-to-wear part of the feed port adopts imported alloy steel. After special treatment, it can effectively improve the wear resistance of the barrel and increase the service life.

Technical Indexes：

Usage distinction：Injection Molding Machine/Extruder

Processing range：Ф12mm - Ф300mm

Effective length：12000mm

Nitriding Depth：0.4mm-0.7mm

Nitriding Hardness：HRC58°-62°

Chrolme Thickness：0.02mm-0.20mm

Straightness：0.015mm/m

Applicable plastic range: ABS, PP, PE, 475, PEV and other ordinary plastics.