Thissteppingshot blastingmachine applies to cleaning the surfaces of casting,forging,steel structure,car wheels and coloured metal workpieces etc.The machine mainly make use of the high-speed pill quantity that the high-efficiency mighty throwing the pills machine throws.Throwing and beating the surface and inner part of the circumgyrating workpieces,to clean the other viscous sand, rust layer, solder residues, oxide husk and etc, then the surface will be subtle and glabrous.It also can enhance the accreting power between the lacquer and the surface of the steel structures,at the same time,it can enhance the resist- fag intensity and resist- fretting ability, improve the steel structures inner quality and protract the using life-span.