Jiangsu Changbao Steeltube Co.,Ltd manufactures and sells steel tubes in the People's Republic of China and internationally. The company offers OCTG products for petroleum industry, including connection tubing and casings, coupling stocks, perforation gun carrier pipes, petroleum tool pipes, drill and green pipes, and slotted pipes; boiler tubes for power generation, such as boiler tubes, water heater, boilers, and U bended tubes; steel tubes for auto industry comprising automobile precision tubes, piping for hydraulic cylinders, and axel tubes; petrochemical tubes, steel tubes for low temperature resistance, and high pressure fertilizer tubes; and steel tubes for engineering machinery industry, such as mechanical steel pipes, boom pipes, and piping for hydraulic cylinders. It also provides line pipes, geological drilling pipes, core barrels, rope corning drill pipe materials, gas cylinder pipes, and accumulator tubes, as well as steel pipes for marine engineering, structural purpose, and fluid transmission. The company was founded in 1958 and is based in Changzhou, China.