Corrosion Protection Zinc protects steel from corrosion. The reason for the extensive use of hot-dip galvanizing is the two-fold protective nature of the zinc coating. As a barrier coating, it provides a tough, metallurgically bonded zinc coating that completely covers the steel surface, isolating it from the corrosive action of the environment. Additionally, zinc's sacrificial action protects the steel even where damage produces minor discontinuities in the coating. Corrosion Protection Zinc protects steel from corrosion. The reason for the extensive use of hot-dip galvanizing is the two-fold protective nature of the zinc coating. As a barrier coating, it provides a tough, metallurgically bonded zinc coating that completely covers the steel surface, isolating it from the corrosive action of the environment. Additionally, zinc's sacrificial action protects the steel even where damage produces minor discontinuities in the coating.
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