In the field of structural steel, in fact, under the impact of the environment, the metal was eroding and corrosion in the air, in the ground or in the environment that the impact of water is the main cause to make longevity down to work quickly. The signs of rust, rust stained points, uneven holes leak, peeling is characteristic of the steel structure has been erosion affect the aesthetic and quality as well as the durability of the work.Every year, the world had tens of millions of tons of steel were swallowed. The main cause is still vicious enemies-the rust.Corrosion in marine environment is the most common corrosion types.
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