IPN-UPN profiles are used in the construction of industrial buildings and steel construction heavy structures. Nowadays, the use of steel profiles has become widespread with the development of the building sector, the widespread use of multi-storey constructions and the proliferation of industrial facilities. In addition, it is used in the manufacture of construction machinery, agricultural machinery, metal and sheet metal processing machinery and energy transmission lines. IPN - UPN profiles (irons) are also used extensively in projects such as viaducts, prefabricated buildings, light steel structures, bridges and passages (underpass and overpass).