S330 Cast Steel Shot

S330 / S390 ST Series Steel Shot are medium to large-size secondary-quenched steel shot abrasives designed for general shot blasting, casting cleaning and metal surface preparation. These ST Series steel shot grades provide strong cleaning efficiency while maintaining stable surface quality, with consistent hardness, better toughness, lower breakage and more reliable blasting performance than ordinary steel shot. S330 ST Series steel shot is suitable for medium castings, forgings, machinery parts, automotive components and general steel workpieces that require balanced cleaning performance. S390 ST Series steel shot offers a stronger impact force and is commonly used for heavier castings, forged parts, steel structures, desanding, descaling, rust removal and surface preparation before coating or painting.