... of steel material, casting, die-casting, forging, glass surface for industries of steel structure construction, bridge, shipbuilding, pipes, container, locomotive, ... shaft ,gear, connecting bar, blade, chain, crank, wheel spares for industries of automobile, locomotice, shiip, plane, metallurgy machinery, petroleum machinery, coal ... α Density2.7g/cm3 Shot Blasting Aluminum Slug applying in auto parts