Extruder screw specifications：

Diameter：Ф16-Ф300

Length/Diameter Ratio：L/D=15-40

Technical Indexes

1、General material:38crMoAIA，Nitriding treatment，Surface hardness HV≥900。Depth of nitration case：0.5-0.8mm

2、Commonly used materials:Surface WC/CO overall spray welding, can effectively improve the service life of the screw.

Types of screw：

Gradual , saltain, wave, screen, double screen,taper,distribntary,saparating,exausting dowel,mixed smelting,double screws,three screws,more screws,granulating etc.