TMK OAO (Trubnaya Metallurgicheskaya Kompaniya OAO or Pipe Metallurgical Company) is a Russia-based engaged in the production of steel pipes. Its product portfolio covers seamless threaded pipes for oil and gas fields, seamless line pipes for infield pipelines, seamless pipes for industrial use, large-diameter welded pipes, energy tubulars, welded pipes. The Company manages production plants in Russia (TMK-CPW, Volzhsky Pipe Plant, Seversky Tube Works, Sinarsky Pipe Plant, Taganrog Metallurgical Works and Orsky Machine Building Plant), Romania (TMK-Artrom and TMK-Resita), Kazakhstan (TMK-Kaztrubprom) and the United States (TMK-Ipsco). TMK OAO has five branches in Russia. It operates also through 17 subsidiaries in Russia, Kazakhstan, Germany, Switzerland and the United States.