Hot-dip galvanizing is a form of galvanization. It is the process of coating on iron items and steel fabricated girders or aluminum items with a thin zinc layer, in galvanisation process we pass the metal through a molten bath of zinc at a temperature of around 860 °F (460°C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that stops further corrosion in many circumstances, protecting the steel below from the elements. Galvanized steel is widely used in applications where rust resistance is needed like steel girders in construction of bridges, Galvano India has galvanization facilities with furnace up to 6 meters.