Changzhou high-quality spiral steel pipe manufacturer Hebei the Tianhui Steel Corporation I Company all SY/T5037-2000 GB/T9711.1-1997 standards and APISpec5L standard production φ219-φ2320, Q235, Q345, 10 # steel, 20 # steel, 16Mn , L245, L290, L360, X42-X70 steel grade the different thickness of the "Tian Hui" brand spiral submerged arc welded steel pipe. The products are widely used in natural gas, petroleum, chemicals, electricity, heating, drainage, steam heating, hydropower penstock, power generation, 

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 Source of long-distance transmission pipeline and piling, bridges, steel and other engineering fields. The company also Chair of the well-known engineers in the industry five Jinxi Petroleum Steel Pipe Plant and Baoji Petroleum Steel Pipe Plant to ensure the quality of the product. 
 Based on the quality, the full implementation of quality management. 2001 passed the ISO9002 quality management system certification, and in May 2003 passed the ISO9001-2000 quality management system certification 
 Quality to win the trust of customers and meet the market, technology, product that is character, integrity is life. Customer satisfaction is our eternal pursuit. The company is committed to: the same quality steel, steel prices the lowest. http://www.thgangguan.com 
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