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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’s annual production capacity of seamless pipes is 4.3 million tons. The company also has an annual capacity of 2.9 million tons of welded pipes, and employs 23,500 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 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.


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


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


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


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.


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.


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


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


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.


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


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


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


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


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.


Tenaris completes its new premium threading facility in Saudi Arabia.


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.


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.


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.


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


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.


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.


Tenaris inaugurated a greenfield seamless pipe mill in Bay City, Texas, which started operations late 2017. The new facility has an annual production capacity of 600,000 tons.


In late 2018, Tenaris entered into an agreement to acquire 47.79 percent of the shares of Saudi Steel Pipe Company (SSP), a welded pipe producer, expanding Tenaris’s product portfolio and services scope. The acquisition was completed at the beginning of 2019.


In early 2019, Tenaris announced a USD 240 million joint venture with Severstal to build a welded pipe plant in West Siberia to better serve a growing market for OCTG pipe products.


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