Tubos Reunidos, S.A., together with its subsidiaries, engages in the manufacture and sale of seamless steel pipe products in the United States, the United Kingdom, Germany, Italy, Spain, Saudi Arabia, Mexico, South Korea, the Netherlands, and internationally. The company operates through Manufacturing, Transformation, Distribution and Marketing, and Other Activities segments. It offers hot-rolled and cold-drawn seamless carbon steel and alloy pipe products; carbon steels, alloys, stainless steels, high nickel alloys; and hot finished seamless steel pipes and tubes for oil and gas, chemical and petrochemical, power generation, heat transfer, automotive, mechanical, and construction industries. The company also provides premium and semi-premium connectors for natural gas and oil wells, as well as for storing carbon, hydrogen, and other fluids; and WearKnot drilling equipment. In addition, it is involved in the industrial/real estate operation and marketing businesses. The company serves downstream, midstream, upstream, mechanical, and downstream pressure part markets. Tubos Reunidos, S.A. was founded in 1892 and is based in Amurrio, Spain.