Jiangsu Changbao Taobang Petroleum Pipe Co., Ltd, established in year of 2004 is specializing in the production of couplings to the manufactures of oil country tubular goods (OCTG). We located in Changzhou New Technology Industry Park, Jiangsu Province, China, covers 18,000 square meters, building area 9,800 square meters, with fixed assets RMB 56 million. Adjacent to Shanghai-Nanjing Expressway, transportation is very convenient. Our company is equipped with the production and testing equipment 88sets, precision CNC lathe Japan MORI SEIKI 38 sets, we carry a full size range of 1.9” to 13-3/8” in J55, K55, N80, L80, P110, C110, grade.Type is NU, EU (Tubing coupling), STC, LC, BTC (Casing coupling) and some premium connections, with annual output above 3 million pcs. Our API couplings all meet the American Petroleum Institute (API) Specification 5CT. Jiangsu Changbao Taobang Petroleum Pipe Co., Ltd is specializing in high precision machine of the most demanding tolerances in both quality and delivery. We are approved supplier of PDO, KOC in Mid-East Market.