... -ferrous castings. Removal of light scale from foreign and heat treated parts. Blasting of machined parts. Removal of mill scale, rust and other ... coverage.Blasting of grey iron, malleable iron, light steel castings, medium forgings, heat-treated parts and heavy mill scale - rust and ... , heavy malleable iron and grey iron castings. Removal of scale from large billets, slabs - rust and other deposits.S ...