Tianjin Tiangang Special Peroleum Pipe Manufacture Co., Ltd is one of the largest professional manufactures of producing Seamless steel tubing & casing pipes, line pipes and structure pipes located in Tianjin, China, which can supply you seamless tubing/casing ranging from 2 3/8" to 20" (O.D.).with grades including J55, K55, L80, N80, P110 etc. in strictly conformity with API 5CT standard. Our production capacity is up to 300, 000 tons per year. We exported about 100, 000 tons of pipes to foreign countries, such as America, Canada, Europe and ***** areas in 2008.