Jiangyin Changgang Pipe Making Co., Ltd. was invested and co-established by Jiangyin City Seamless Steel Tube Factory and Hongkong Changhong International Investment Limited in 2005.The registered capital was 18 million US *s and the total investment was 44 million US *s. Changgang is a developed enterprise with a high-tech scientific research, specializing in producing petroleum drill pipe. Changgang has an annual output of 20,000 tons of drill pipes. Changgang is a manufacturer certified by API Spec 5DP?API Spec Q1?ISO 9001:2000 and ISO/TS 29001.Jiangyin Changjiang Oil Special Pipe Manufacture Co., Ltd. is a professional oil pipe manufacturer. The registered capital was 12 million US *s and the total investment was 37 million US *s, which has an integrated annual production capability of 450,000 tons of OCTG, mainly produces casing, tubing, line pipe and so on. Changjiang is a manufacturer certified by API Spec 5CT?API Spec Q1?ISO 9001:2008?ISO/TS 29001 and API Spec 5L.
