SSS produces profiles 20/10 and TABS, ventilated thermal cut, even in Corten steel to ensure in every strong physical installation, chromatism variable in time and high mechanical performance. The Corten, in fact, is a steel with low content of alloying elements (originally 0.1-0.2% phosphorus, 0.2-0.5% copper and 0.5-1.5% chromium ) and high mechanical strength, patented in 1933 by the United States Steel Corporation. The name expresses the characteristics that distinguish it from carbon “CORrosion resistance” and “TENsile strength”. It differs for a yield strength of 580 MPa, greater than normal steel, enabling significant reductions in thickness and weight during use. The high resistance to electrochemical corrosion derives from the presence in its interior of oxides which give it the ability to protect itself, creating a passivating surface coating that prevents corrosion and, consequently, the decay of the material. The Corten is distinguished into three categories, for different characteristics and fields of use: A to phosphorus, for architectural applications, B and C based on Vanadium, for highly stressed structures.