Wenzhou Steel Plant Wenzhou pipe spiral pipe manufacturers in Wenzhou Wenzhou pipe manufacturers www.pvdfgc.com pvdf The pipe www.bengguan168.com pump tube www.naimoguanjian.com pump Pipe www.thgangguan.com spiral steel pipe www.hbthgg.com, spiral steel pipe the Tianhui Hebei Steel Pipe Manufacturing Co., Ltd. All using SY/T5037-2000 GB/T9711.1-1997 standards and APISpec5L standard production φ219-φ2420, Q235, Q345, 10 # steel, 20 # steel, 16Mn, L245, L290, of L360 , X42-X70 steel grade and wall thickness of spiral submerged arc welded 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. Spiral Pipe Network persist in grasping the market, and internal management, quality and efficiency of development and achieved good economic and social benefits, with strong financial strength, advanced management experience, excellent sales service: strict quality stock management system and science and the overall marketing tool, hand in hand with you and develop together. Spiral Pipe net operating a fair, objective, scientific, pragmatic, and the principle of integrity. Management in order to standardize their operations and courteous. Honesty, courage to forge ahead in unity and future of diligent hard work, to seize the great economic development trends and developing the western region. Excellent opportunity to revitalize the economy in the Northeast is actively strengthen exchanges with their peers, GUANG friends from all walks of life, the times to create the enterprise greater glory for the country, to make a contribution to the prosperity and development of seamless steel pipe industry. 
 The spiral is also known as the spiral steel pipe and spiral welded pipe, low carbon structural steel or low alloy steel strip according to the angle of the spiral line (called the forming angle) rolled into a tube, and then the tube welded together made , it can be a narrow strip production of large diameter steel pipe. The coil is mainly used for oil and gas pipelines, its specifications OD * wall thickness. Side welding and double-sided welding spiral welded pipe should ensure that the hydrostatic test, the tensile strength of the weld and cold bending performance required. 
 Edit this paragraph, the production process 
 (1) raw material strip volume, wire, flux. The input to go through rigorous physical and chemical testing. 
 (2) strip head and tail docking, using a single wire or twin-wire submerged arc welding and automatic submerged arc welding rolled into the steel pipe. 
 (3) before forming the strip after flattening, cutting, trimming, edge planing, transportation and to the curved side surface cleaning. 
 (4) electric contact pressure gauge to control the conveyor both sides of the pressure cylinder pressure to ensure the smooth delivery of the strip.