Specifications of Extruder Screw and Barrel ：

Diameter of screw：Ф16-Ф300

L:D ratio：L/D=15-40

1、 Material:38crMoAIA，Nitriding treatment，Surface  Surface Hardness HV≥900. Depth of nitration case：0.5-0.8mm.

2、 Material: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.