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Spiral steel pipe technology

1, the molding process, the steel plate deformation, the residual stress is small, the surface does not produce scratches. The processing of spiral steel pipe in the diameter and wall thickness of the size of the specifications have greater flexibility, especially in the production of high-grade thick-walled pipe, especially in small and medium-sized thick-walled pipe with other technology can not match the advantages to meet the user In the spiral steel pipe specifications more requirements.

2, the use of advanced double-sided submerged arc welding process, can be achieved in the best location of welding, not prone to wrong side, welding and not welding and other defects, easy to control the quality of welding.

3, 100% of the steel pipe quality inspection, so that the whole process of production of steel pipe are effective in the detection, monitoring under the effective guarantee of product quality.

4, the entire production line of all the equipment with the computer data acquisition system networking functions, to achieve real-time data transmission, by the central control room on the production process of technical parameters.

5, raw materials that are with coil, wire, flux. In the investment before going through rigorous physical and chemical testing.

6, with steel head and tail docking, the use of single or double wire submerged arc welding, rolled into steel pipe after the use of automatic submerged arc welding.

7, before forming, the strip through the leveling, cutting edge, planing edge, surface cleaning and delivery to the edge of the treatment.

8, the use of electrical contact pressure gauge on both sides of the conveyor to control the pressure of the cylinder to ensure the smooth delivery of the strip.

9, the use of external control or internal control roll forming.

10, the use of weld gap control device to ensure that the weld gap to meet the welding requirements, diameter, misalignment and weld gap are strictly controlled.

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