High resistance profiled bar

The invention refers to a high resistance profiled bar used to build cross-members or longitudinal girders designed for the resistance structures and bodies of vehicles, aircraft or sea vessels. According to the invention, the profiled bar is made up of a U-shaped main profile (1) that has rim edges (a), as well as corrugated iron sheet (2) which has side edges (b), as well as interior curves (c) and exterior curves (d). Intermediary iron sheets (5) are overlapped and fixed by welding onto the side rims (e) of the side edges (b), and are also connected by means of cross-bracings (6). Interior and exterior reinforcements (3 and 4) are overlapped and fixed by welding onto the interior and exterior curves (c and d).