HDG has various meanings in the Galvanized category. Discover the full forms, definitions, and usage contexts of HDG in Galvanized.
Hot-dip galvanization is a form of galvanization. It is the process of coatingiron and steel with a layer of zinc by immersing the metal in a bath of molten zinc at a temperature of around 840 °F (449 °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.
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