Tianjin Shuangjie Steel Pipe Co., Ltd. was set up in 1978. With development for many years, it has now developed into a company with more than 700 staff, of which, 90 technicians, and a scientific and technical personnel and operators with over 30 years’ practical experience in welded pipe production. Located in Beichen district of Tianjin, adjacent to Beichen Economic Development Zone, 50 kilos away from Tianjin Xingang Port, the company has a through access railway to the factory floor and covers an area of over 270,000 square meters. Since the set-up of factory in 1978, by introducing advanced equipments, depending on scientific-technical progress and strengthening quality management, the company has developed into an enterprise that has five high-frequency weld-pipe production lines(Φ45、Φ60、Φ114、Φ325、Φ630), three slitting production lines, three production lines of hot dip processed Zinc pipes, one production line of composite water supply steel tube with plastic epoxy resin as internal coating, and annual maximum capacity of 700,000 tons.

      The company has established a set of services, from production to meet strict international standards of quality assurance system and quality control system components through pressure pipe manufacturing license and the European CE certification, ISO 9000 quality system certification, API 5L and API 5CT certification.