Hot-dip galvanizing is a cost-effective and reliable process for protecting steel against atmospheric corrosion. The zinc coating safeguards the steel through barrier protection and sacrificial galvanic protection for minor coating discontinuities. This process also forms a metallurgical bond with the base steel, creating a fully integrated system. Zinc coatings come in various types, including pure zinc (GI) with regular or minimized spangle and zinc-iron alloy (GA).