Spiral Steel Plant, Hebei, Hebei straight seam submerged arc welded spiral steel pipe spiral steel pipe factory plant, spiral submerged arc welding straight seam steel pipe plant, heat pipes plant, insulation spiral steel pipe plant, pipe insulation plant, corrosion spiral steel pipe plant, corrosion pipe plants, pipelines corrosion insulation plant, pipe insulation preserving plant, hot-rolled coil steel plant, pressure spiral pipe plant, pressure pipe plant, pipe fittings factory, spiral steel pipe manufacturer, spiral pipe manufacturers straight seam, hot-rolled coil steel manufacturers, spiral pipe pressure Price, spiral steel pipe price, hot-rolled coil steel prices, straight seam steel pipe price spiral, spiral steel pipe prices corrosion, insulation spiral steel pipe prices, spiral steel pipe production base in China, Chinese pipe manufacturing base. Specializing in the production of different steel grade of different caliber, "Tian Hui" brand spiral steel pipe, straight seam spiral steel pipe, hot-rolled spiral steel pipe, spiral steel pipe thermal expansion, the pressure spiral steel pipe, pressure pipe, spiral steel pipe anti-corrosion, anti-corrosion pipe, spiral pipe insulation, thermal insulation pipes, heat pipe, spiral steel pipe piling, dredging spiral steel pipe. Used in all SY/T5037, GB/T9711, GB/T8163, GB/T8162, APISpec5L standards. Specializing in the production D219mm-D2420 * 5-32mm, Q235, Q345, 10 #, 20 #, 16Mn, L245, L290, L360, X42-X70 steel grade of the "Tian Hui" brand SSAW spiral steel pipe, D340mm-1420 * 6-50mm thick wall straight seam large diameter spiral steel pipe, hot-rolled spiral steel pipe, spiral steel pipe thermal expansion. All products using SY/T5037-2000 GB/T9711.1-1997, GB/T8163, GB/T8162, APISpec5L standard. http://www.hbthgg.com insulation of large diameter spiral steel pipe spiral steel http://www.naimoguanjian.com http://www.thgangguan.com fabric machine http://www.hbbgc.com pump tube http:/ / www.naimogd.com wear resistant pipe elbow http://www.zgyhgd.com http://www.hbguandao167.com welded flange http://www.paixiejigs.com Chip conveyor http:/ / www.hbbengguan.com tubing