Although galvanized chains have certain corrosion resistance in marine environments, they are not suitable for long-term exposure to such environments. The high humidity, salt spray, and strong ultraviolet radiation in the marine environment are highly corrosive natural factors. Even chains that have undergone hot-dip galvanizing treatment will gradually lose their protective effect in this environment due to the reaction between the zinc layer and sodium chloride.

The main function of the zinc layer is to protect the steel substrate by sacrificing the anode principle, but when the zinc layer continues to react in a high salt environment, its thickness gradually decreases, ultimately leading to the steel being exposed and rusting.
Long term exposure to the marine environment may also cause physical wear and tear, such as sandstorms, wave erosion, or mechanical friction, which can accelerate the peeling of the galvanized layer. In humid and salty air, galvanized surfaces are prone to forming white rust. Although this zinc salt deposit still has a certain protective effect in the early stages, once damaged, it cannot prevent further corrosion.

If the usage scenario is indeed located in high salt spray areas such as beaches or ships, galvanized chains can only be used as temporary or non critical components and must be regularly maintained, such as rinsing with fresh water, checking the zinc layer status regularly, and timely applying rust proof grease. If long-term stable operation is required, it is recommended to use stainless steel chains (such as 304 or 316 stainless steel) because they have excellent salt spray resistance and corrosion resistance, making them more suitable for long-term applications in marine or coastal environments.