Tenaris Files 2011 Form 20-F

LUXEMBOURG--(Marketwire - Apr 30, 2012) - Tenaris S.A. (NYSE: TS) (BAE: TS) (BVM: TS) (MILAN: TEN) ("Tenaris") announces that it has filed its annual report on Form 20-F for the year ended December 31, 2011 with the U.S. Securities and Exchange Commission (SEC). The annual report can be downloaded from the SEC website at www.sec.gov and from Tenaris's website at www.tenaris.com/investors. Holders of Tenaris's shares and ADSs, and any other interested parties, may request a hard copy of the annual report, free of charge, at 1-888-300-5432 (toll free if you call from the United States) or +(352) 26 47 89 78 (if you call from another jurisdiction).

Tenaris is a leading global supplier of steel tubes and related services for the world's energy industry and certain other industrial applications.