Tenaris S.A. revenue for the last year amounted to 15.18 B USD, the most of which — 14.48 B USD — came from its highest performing source at the moment, Tubes, the year earlier bringing 11.34 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Tenaris S.A. 5.92 B USD, and the year before that — 5.03 B USD.