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Tenaris offers advanced product technology and integrated supply chain management services on a global scale to customers such as the world's major oil and gas companies, as well as engineering and industrial companies.

Tenaris has manufacturing facilities in Argentina, Brazil, Canada, Colombia, Ecuador, Indonesia, Italy, Japan, Mexico, Romania, Saudi Arabia and the United States, a proprietary global service and a worldwide distribution network. Tenaris’ annual production capacity of seamless pipes is 3.8 million tons. The company also has an annual capacity of 2.6 million tons of welded pipes, and employs 19,000 people worldwide.

Tenaris is the world leader in premium connections and is at the forefront in the development of the tubular technologies required not only to operate in the most demanding oil and gas fields, but also in high performance mechanical and structural applications. Tenaris is a public company, incorporated in Luxembourg, with its shares listed in Milan, Buenos Aires and Mexico, and its American Depositary Securities listed on the New York Stock Exchange; it adheres to international standards of corporate governance, financial transparency and information disclosure.


  • 1954

    Tamsa starts operations in Mexico and Siderca in Argentina. Both plants are constructed by Techint.

  • 1986

    Siderca expands its seamless capacity and takes over Siat, an Argentine welded pipe manufacturer established in 1948.

  • 1993

    Siderca acquires a controlling interest in Tamsa and forms a strategic alliance.

  • 1996

    Siderca acquires a controlling interest in Dalmine, Italy, following its privatization. With Tamsa, this strategic alliance becomes DST. Dalmine had begun operations in 1909. Agostino Rocca, before founding the Techint Group, was Managing Director.

  • 1998

    Tamsa establishes Tavsa with Corporación Venezolana de Guayana to take over Sidor's seamless steel tube mill. One year later, Siderca will acquire control of Confab, in Brazil.

  • 2000

    In Canada, Siderca leases Algoma Steel's seamless steel tube plant and begins operating AlgomaTubes.

  • 2001

    The Tenaris brand name is introduced, replacing DST. Siderca is listed on the New York Stock Exchange (NYSE).

  • 2002

    Tenaris S.A., constituted in Luxembourg, becomes the holding company following an exchange offer for the shares of Siderca, Tamsa and Dalmine and is simultaneously listed on the New York, Milan, Buenos Aires, and Mexican stock exchanges.

  • 2004

    Tenaris acquires control of Silcotub, a Romanian manufacturer of seamless steel pipes.

  • 2006

    Tenaris expands its presence in USA, Canada and Colombia through Maverick Tube Corp.

  • 2007

    With Hydril, Tenaris expands its offer of products and services for the oil and gas industry.

  • 2008

    Tenaris sets up a new threading facility in Qingdao, China.

  • 2009

    Tenaris builds up its presence in the Far East through the integration of SPIJ, an Indonesian OCTG processing operation. Venezuela nationalizes TAVSA and steel shop Matesi.

  • 2010

    Tenaris completes its new premium threading facility in Saudi Arabia.

  • 2011

    Tenaris opens new rolling mill in Veracruz, Mexico. In Argentina, Campana, the company inaugurates a new Technology Center. In Africa, Tenaris expands its operations in Nigeria through a joint venture with the leading pipe coating company.

  • 2012

    Tenaris and Ternium join the control group of Brazil's steel giant Usiminas, together with Nippon Steel and Usiminas employees’ pension fund.
    The Campina sucker rods mill in Romania is integrated into Tenaris.

  • 2013

    Tenaris announces the construction of its first US seamless pipe mill in Bay City, Texas and a new sucker rods facility in Conroe.
    Tenaris inaugurated the Roberto Rocca Technical School in Campana, Argentina, being the first one of the network and specializing in electronics and electro-mechanic.
    In November, TenarisSilcotub inaugurated a premium OCTG finishing line for specialized products used by the oil and gas industry in Zalau, Romania.

  • 2014

    A new threading facility for OCTG with a production capacity of 35,000 tons of pipes per year is inaugurated in Ecuador.

  • 2015

    In May, Tenaris inaugurated its expansion project at Colombia’s manufacturing center with an investment of $240 million USD, thus increasing its production capacity and implementing state-of-the-art technology.

  • 2016

    A new premium threading facility is inaugurated in Aktau, Kazakhstan. The new plant enhances the service offer to local customers operating in major Kazakhstan fields with commercial, technical, field service and supply chain logistics expertise.
    The construction of a service center in Grand Prairie, Canada, is announced.
    Tenaris celebrated the opening of a new automotive component center in Qindao, China.
    A new service center is inaugurated in Midland, Texas, on December 2016 – a $36 million investment critical to the deployment of Rig Direct™, the company’s new business model of working directly with oil and gas customers to synchronize pipe manufacturing with drilling operations.
    In December, Central Eléctrica Pesquería, a 900 MW combined cycle gas power plant in Monterrey, with 30 percent owned by Tecpetrol, 22 percent by Tenaris and 48 percent by Ternium, is inaugurated. With an investment of $1 billion USD, it was designed and built by Techint E&C, and is operated by Tecpetrol while supplying electricity to Ternium and Tenaris in Mexico.

Visit the Tenaris website