Galvanizing is an industrial process for rust proofing iron and steel. The metals are covered with a thin layer of zinc.
Galvanizing protects steel and iron in two ways, the coating of corrosion-resistant zinc can prevent corrosive substances from reaching the inner metal (steel or iron). Zinc as galvanizing becomes a sacrificial anode so even if the coating is scratched, the exposed steel will still be protected by the rest of the zinc coating.
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