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Hot dip galvanizing is the process of applying a zinc coating to fabricated steel structures and parts by immersing them in a molten zinc bath, creating a metallurgical bond to the steel.The galvanized coating provides both barrier and cathodic protection against corrosion.ot dip galvanizing is the process of applying a zinc coating to fabricated steel structures and parts by immersing them in a molten zinc bath, creating a metallurgical bond to the steel.
The two most common steel products that are hot-dip galvanized using the continuous process are sheet and wire. The objective of the continuous process is to deposit a zinc coating that is smooth, thin and composed of nearly all zinc bath metal with very little zinc-iron intermetallic.