Tenaris S.A. revenue for the last year amounted to 14.87 B USD, the most of which — 14.19 B USD — came from its highest performing source at the moment, Tubes, the year earlier bringing 11.13 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Tenaris S.A. 5.80 B USD, and the year before that — 4.94 B USD.