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 The plant of the Tianhui spiral steel pipe, spiral steel pipe plant, Hebei Steel Plant, Changzhou Steel Pipe Plant, days Wai Steel Plant, hot-rolled steel plant, seamless steel pipe plant, straight seam steel pipe factory, hot expanded steel pipe plant, pipe fittings plant, penstock plants Hebei pressure steel pipe plant, penstock installation, manufacturing penstock penstock prices, the price of spiral steel pipe, spiral pipe prices, spiral steel pipe specifications, steel prices, the prices of hot-rolled steel, hot rolled pipe price, straight seam steel pipe price, straight seam pipe prices, manufacturers of steel pipe, spiral steel pipe standards, spiral steel pipe market, steel prices, steel producers, spiral steel pipe manufacturers, steel manufacturers, steel plant, steel factory, steel manufacturing company steel manufacturing companies, steel manufacturers, steel pipe suppliers, spiral pipe production base, steel market, steel market, steel market, steel market, steel knowledge. Specializing in the production D219mm-D2420 * 5-32mm, Q235, Q345, 10 #, 20 #, 16Mn, L245, L290, of L360, X42-X70 steel grade of "Tian Hui" brand spiral submerged arc welded steel pipe, D340mm-1420 * 6 -50mm large diameter thick wall straight seam steel pipes, hot-rolled steel pipe, hot expanded steel pipe. The products are all to GB/T9711.1-1997 SY/T5037-2000, GB/T8163 GB/T8162, APISpec5L standard production. 
 Professional production and operation of spiral steel pipe, spiral welded steel pipe, spiral wound steel pipe, double-sided submerged arc welded pipe