Corrosion protection of steelwork: The benefit of galvanising

By The Helpful Engineer / On / In Technical & Discussion

I took this picture of a fire escape steel stairs located at the side of a building in Rosslare, Ireland. The interesting thing about this stairs is that two different forms of corrosion protection have been used to protect the same item against rust. Galvanised steel was used for the steel steps while the supporting steel framework was protected with paint. The additional protection that galvanising provides to the steel is clearly seen by comparing the rust on the supporting steelwork with the rust free steps. It is rare that a situation like this occurs where one type of finish can be compared against another because the steel should really be protected by the same method preferably a galvanised finish for external steel.

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