This joint standard practice details the use of blast cleaning abrasives to achieve a defined degree of cleaning of steel surfaces prior to the application of a protective coating or lining system. The focus of this standard is white metal balst cleaning, which removes all of the coating, mill scale, rust, oxides, corrosion products, and other foreign matter from the surface. The requirements presented include the end condition of the surface and materials and procedures necessary to achieve and verify the end condition. This standard is maintained jointly by the SSPC and NACE Task Group (TG) 006.