OCTG SALES for 10 years since 2008,with the subsidiaries of Wuxi OFD Oil-Field Supply Co.,Ltd and skilled mill---Tianjin Walt Pipe Co.,Ltd., We are on the approved supplier list of PDO of SHELL and CNOOC.mainly manufacturing and supplying OCTG products, API 5CT tubing casing pup joint coupling nipple crossover as well as sorts of steel grade materials and kinds of thread, strictly follow the API 5CT Standard,GOST633-80&GOST632-80 or technical requirements provided by clients.