Tenaris S.A., organized in Luxembourg, is a manufacturer and supplier of steel pipes and related services for the petroleum industry. It produces and ships over 4 million tons of pipes annually. In 2024, sales to customers in North America accounted for 46%, 19% in South America, 26% in the Asia-Pacific, and 10% in Europe. The company owns 11.46% of Ternium, 3.96% of the share capital of Usiminas, and 22% of Techgen. Tenaris is 60.45% owned by Techint, which is controlled by San Faustin S.A., which is in turn controlled by Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin, a Stichting, while 38.41% of the company is publicly traded. It is listed on the New York Stock Exchange, on the FTSE MIB index of the Borsa Italiana and on the Mexican Stock Exchange. Wikipedia