This series of shot blasting machine is designed for cleaning the surface of jar with largescale,large castings and  large steel structure weldments.Throughcompressing the air,the peeningware shoots bunches of pills in highspeed and density to impact on the original surface of the steelmaterial and cause the rust layer, welding slag, oxide skin and otherstains fall off quickly. The steel material and work pieces obtain aclean surface in certain roughness, thus improve the adhesion oflacquer film to the steel surface. The pill blasting gives steel workpiece metallic luster on the surface and visible part, expose thesurface defect and enhances the anti fatigue and corrosion resistingperformance.It also can clean the burrs on the castings surface.