... alloy steel, stainless steel, brass, brozen and other special steel materials2. Usage: auto&motocycle, mining machinery, ... , magnetic particle inspection,FSQ Vacuum Foundry Spectrovac.8.Surface finish: polishing, oiled(rust-prevented), zinc-plated, nickel ... Silicone (Water galss)Stainless Steel, Carbon Steel, Special Alloy Steel Bronze,Brass, AluminumSilica SolFORGINGHammer ForgingStainless Steel, ...