... S550, S460, S390, S330, S280, S230, S170, S110,S702. Chemical Composition of the products: C 0.70-1.20% Mn 0.60 ... steel structure, descaling of forging. Shot peening of cast steel shot: Shot peening of gear, heat treatment. Shot blasting of cast steel shot: ... board, profile steel, steel structure. Pre-treatment of cast steel shot: Pre-treatment of surface, steel board, profile steel, steel structure, ...