The spiral sale at the Tianjin spiral on sale at the steel pipes for sale at www.naimoguanjian.com 
 Pillars of steel pipe, dredge pipe, lose clay pipe, flange, bend, big bend, tee, the size of first-class fittings. 
 The products are widely used in natural gas, petroleum, chemicals, electricity, heating, drainage, steam heating, hydropower pressure steel pipe, thermal power, water and other long-distance pipelines and piling, bridges, steel structures and other engineering fields. Specializing in the production of spiral steel pipe and pipe anti-corrosion insulation, has a diameter of 219 - diameter of 2500 production line 3, the wall thickness of 6-25, the steel plate material choice, do 3PE anti-corrosion, polyurethane insulation, rust, 8710 drinking water paint coating project. 

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 In addition the company also operates a seamless steel pipe, ERW oil casing pipe. Longitudinal specifications have 4 minutes, 6 points, 1 inch, 1.2 inch, 1.5-inch, 2 inch, 2.5-inch, 3 inch, 4 inch, 5 inch, 6 inch, 8 inch, 102,108,127,133,139 159,168,177,194,219,273,325, and other specifications, wall thickness 1-12 thick of the Longitudinal, hot-rolled seamless steel pipe, product implementation: SY/T5037.GB/T9711 
 GB/T8162-1999, GB/T8163-1999 standard, widely used in petroleum, natural gas industry, chemical industry, the transmission fluid pipelines, bridges, piling, infrastructure projects and steel structure. Special specifications, special wall thickness steel pipe and pipe fittings customized according to user needs. To enhance product quality control, the purchase of automatic ultrasonic, X-ray industrial TV, X-ray real time imaging, and 1000 tons of computer automatically hydrostatic pressure testing machine, 60 tons universal testing machine, Charpy impact test machine and other important testing equipment, production equipment, the introduction of United States Lincoln automatic welding, Germany MEG and the Mannesmann full row roller device, its high technology content and advanced technology. Produce Q235, Q345, 20 # 
 , X42-X70 various models of steel pipe. Products Quality Supervision and Inspection Center of China's petroleum industry pipe professional pipe, steel products in Tianjin Province Quality Supervision and Inspection Station the Changzhou test detected the performance of full compliance with GB/T9711.1-1997, SY/T5037-2000, GB3022 and GB5040 standards. Widely used in oil and gas, thermal power generation, water and piling. www.thgangguan.com 
 Quality to win the trust of customers and meet the market, technology, products that is character, integrity based on the quality, the full implementation of ISO9001 quality management. Passed the ISO9002 quality management system certification, and passed life. Customer satisfaction is our eternal pursuit. The company is committed to: the same quality, the lowest price. Production and management (spiral welded steel pipe Spiral steel pipe, spiral welded pipe, spiral steel pipe, spiral pipe, spiral wound pipe), the seamless steel pipe (seamless pipe), straight seam steel pipes (Longitudinal), hot-rolled steel pipe, hot expanded steel pipe, welded steel pipe, pressure pipe, anti-corrosion steel pipe, pipe insulation (oil and gas 2PE/3PE polyethylene coating layer, FBE dissolution epoxy powder pipe coating, epoxy coal tar seemed to paint, steel cement mortar lining anti-corrosion