Diameter：Ф16-Ф300
Length/Diameter Ratio：L/D=15-40
Surface WC/CO overall spray welding can effectively improve the service life of the screw. There are gradual,saltain,wave,screen,double screen,taper,distribntary,saparating,exausting dowel,mixed smelting,double screws,three screws, more screws,granulating etc.
Diameter：Ф16-Ф300
Length/Diameter Ratio：L/D=15-40
Surface WC/CO overall spray welding, can effectively improve the service life of the screw.There are gradual , saltain, wave, screen, double screen,taper,distribntary,saparating, exausting dowel,mixed smelting,double screws,three screws,more screws,granulating etc.
