Treatment of metals; treatment of steels; mechanical, thermomechanical or chemical transformation of the properties and characteristics of metals in the nature of the treatment of metals, namely, direct reduction of iron, metal tempering, finishing of metal surfaces, brazing, casting, anodizing, chromium plating, sintering, electrolytic zinc plating, phosphatizing, milling, shaping, tin-plating, galvanizing, nickel plating, laminating, armor plating, cutting, polishing, magnetizing, plating, ...

Treatment of metals; treatment of steels; mechanical, thermomechanical or chemical transformation of the properties and characteristics of metals in the nature of the treatment of metals, namely, direct reduction of iron, metal tempering, finishing of metal surfaces, brazing, casting, anodizing, chromium plating, sintering, electrolytic zinc plating, phosphatizing, milling, shaping, tin-plating, galvanizing, nickel plating, laminating, armor plating, cutting, polishing, magnetizing, plating, ...