My entire to adopt SY/T5037-2000, GB/T9711.1-1997 standards and APISpec5L standard production φ219-φ2320, Q235, Q345, 10 # steel, 20 # steel, 16Mn, L245, L290, of L360, X42-of X70 steel class 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 pressure steel pipe, thermal power, water and other long-distance pipelines and piling, bridges, steel structures 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. Through the ISO9002 quality management system certification in 2001 and in May 2003 passed the ISO9001-2000 quality management system certification and quality to win the trust of customers to 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.naimoguanjian.com pump the tube http://www.hbthgg.com spiral http://www.thgangguan.com spiral steel pipe http://bengguan168.com pump tube