Various types of existing ф1140 grade steel, widely used in petroleum, gas, natural gas, thermal power generation and other infrastructure projects. Company-ф381 straight seam welded steel pipe in a line of work, ф219-ф2432 double wire, double-sided submerged arc spiral pipe production line four, and anti-corrosion benefits under the Hebei-day plant, coating plant, Hebei Tian Hui, Hui-day Hebei Steel to expand the system works, Tianhui seamless steel pipe plant produce various specifications and models steel pipe 380,000 tons, output value of 1.2 billion, the company has introduced advanced U.S. Lincoln automatic welding equipment, advanced German steel production equipment, with high technology, process technology advanced features, according to oil industry standards, national standards, the American Petroleum Institute API Spec 5L standard production Q235, Q345, X42-X7 Founded in 1996, located in the Bohai Sea Economic and Technological Development Zone of Cangzhou Yanshan, convenient transportation, advanced communications, a vast territory, has a good development space, a total area of ??86,000 square meters, 198 employees, including 28 senior titles, companies had total assets of 270 million. http://www.naimoguanjian.com http://www.thgangguan.com