Passivation (remove iron at surface to prevent corrosion, use nitric acid, ASTM A380)Pickling (acid treatment to remove metal scale produced in welding or hot working)Degreasing, Sand Blasting, Wire Brushing,Barrel Finishing and Vibratory Finishing   Mechanical Grinding and Polishing    Electropolishing            (brightens the steel surface by selective   dissolution of the high points)  Machined Parts  PolishBend Pipe PlishPipe Polish (before/after)Casting Part PolishComplex Part PolishStainless Sheet ......