GI Steel

A small amount of aluminum (0.2%) is still added to the GI steel zinc solution to:
1. Improve the fluidity of zinc solution;
2. Aluminum and iron preferentially react to form an aluminum iron alloy layer, suppressing the reaction between zinc and the steel plate substrate, thereby improving the adhesion of the coating;
3. Aluminum forms an alumina film on the surface of zinc liquid, preventing oxidation reactions on the zinc surface and reducing zinc consumption;
4. Similarly, aluminum and oxygen on the surface of the coating first react to form an aluminum oxide protective film, preventing oxidation of the coating and increasing surface brightness;
GI plate is the most common and widely used coated steel plate, widely used in various industries such as construction, home appliances, automobiles, transportation, and agriculture. The corrosion process of GI steel
The first corrosion that occurs on galvanized steel throughout its entire service life is the oxidation of the surface galvanized layer, resulting in "white rust". After a little longer, the "white rust" on the surface further reacts with impurities such as carbon dioxide in humid air, forming "black spots". When galvanized steel is used for a long time and the corrosion of the galvanized layer is severe, the steel substrate loses the sacrificial corrosion effect of zinc and begins to oxidize, generating "red rust". Once the steel substrate begins to oxidize, the corrosion rate becomes very fast, and the service life of galvanized steel is also over. The application of GI steel
GI steel is generally used for building exterior walls, such as glass curtain walls, marble curtain walls, aluminum plate curtain walls as columns and load-bearing materials, or for outdoor construction steel such as telecommunications towers and highways, with galvanization being divided into galvanization and hot-dip galvanizing.

GI steel supplier
Gi steel coil/sheet/strips in stock.
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Email:gi@gneesteel.com
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