WSP Holdings Limited, through its subsidiaries, manufactures oil country tubular goods products. It offers casing, tubing, and drill pipes for oil and natural gas exploration, drilling, and extraction activities, as well as line pipes and green pipes. WSP Holdings Limited also provides American Petroleum Institute (API) products, which are products manufactured according to the standards formulated by the API; and non-API products, which are products tailor-made to meet customers specifications. WSP Holdings Limited serves oilfields in North America, the Middle East, Asia, Africa, and the Russian Federation through distributors. WSP Holdings Limited was founded in 1999 and is headquartered in Wuxi, the People's Republic of China.