? Hebei Tian Hui Steel Pipe Industrial Co., Ltd. under the spiral steel pipe factory of Hebei, Cangzhou Spiral Steel Plant, Steel Plant Tianhui spiral, spiral steel pipe factory, Hebei steel factory, steel pipe plant in Cangzhou, Tian Hui steel plant, hot-rolled steel plant, seamless steel pipe plant , straight seam steel plant, thermal expansion of steel plants, pipe fittings factory, pressure pipe plant, Hebei pressure pipe plant, penstock installation, pressure pipe manufacture, the price pressure pipe, spiral steel pipe prices, the price spiral pipe, spiral steel specifications, steel prices , hot-rolled steel prices, prices of hot-rolled pipe, straight seam steel prices, the price straight seam pipe, steel pipe manufacturers, standard spiral pipe, spiral steel market, steel prices, steel producers, spiral steel pipe manufacturers, steel manufacturers, steel production plants, steel factories, steel manufacturing company, steel manufacturers, steel manufacturers, steel suppliers, spiral steel pipe production base in China, steel market conditions, steel market, steel market, steel market, steel knowledge. Specializing in the production D219mm-D2420 * 5-32mm, Q235, Q345, 10 #, 20 #, 16Mn, L245, L290, L360, X42-X70 steel grade of "Tian Hui" brand spiral submerged arc welded pipe, D340mm-1420 * 6 -50mm thick wall straight-seam large-diameter steel pipe, hot-rolled steel pipe, hot expanded steel pipe and so on. Products used in all SY/T5037-2000 GB/T9711.1-1997, GB/T8163, GB/T8162, APISpec5L standard production. http://www.naimoguanjian.com http://www.thgangguan.com