Sand blasting, a form of high speed sand gravel, is usually used in a special Sand Blasting Room. The appearance of the oxide skin grease and paint can be removed, which makes uniform appearance with good quality. The follow-up process can be used in welding, oxidation, coating, surface chemical heat treatment, phosphating etc. Sandblasting can make the workpiece appearance occurred residual compressive stress, and the workpiece surface quality is uniform, it can improve the fatigue strength of the workpiece. The effect of strengthening is worse than that of shot blasting, and the deformation of workpiece is smaller than that of shot blasting from Shot Blasting Equipment.