CHINA OAK OILFIELD PIPE MANUFACTURING Co., Ltd.(OAK) is a leading technology-driven manufacturer specializing in oilfield tubular goods and drilling equipment. Headquartered in Beijing, the company operates advanced production facilities in Tianjin and Cangzhou, delivering integrated solutions encompassing design, R&D, manufacturing, and technical services for the oil and gas industry.

OAK’s product line includes API and non-API grade OCTG, such as casing, tubing, drill pipes, and premium connections, engineered to meet stringent global standards. The company has pioneered the development of proprietary technologies, producing high-performance tubular solutions for extreme downhole conditions. These include deep-well casing for high-pressure/high-temperature (HPHT) environments, thermal recovery casing for steam injection applications, and corrosion-resistant alloys (CRA) for sour service, including H₂S and CO₂-resistant grades. Additionally, OAK offers low-temperature, high-strength tubulars for arctic and subsea applications.

With a strong focus on innovation and quality, OAK’s products have been deployed in over 20 countries across the Middle East, Russia, Latin America, and other key oil-producing regions. The company remains committed to advancing drilling and production efficiency, providing reliable and cutting-edge solutions to meet the complex challenges of the global energy sector.