The main characteristic of the wheathering steel, best known under the trademark COR-TEN steel, is that due to their chemical compositions, these steel exhibit increased resistance to atmospheric corrosion when compared to others. This is because the steel forms a protective layer on its surface under the influence of the weather. It also makes possible to install it without any painting. In other words, the steel is allowed to rust in order to form the protective coating. Either way, to assure top quality, 100% of the towers parts are galvanized.