1. The main difference between the two is the degree of their coating. The galvanized steel sheet is mainly plated with zinc on the coating. The coating of the galvalume steel sheet is not only zinc but also aluminum.
2. The surface of the galvanized steel sheet is plated with zinc, which has a good protective effect on the material and is not easy to rust. As for the galvalume steel sheet, because part of the zinc on the surface is changed to aluminum, it is easy to oxidize and rust. So in comparison, the service life of the galvanized steel sheet is longer than that of the galvalume steel sheet.

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