Spiral submerged arc welded pipe less investment in equipment, lower prices due to using narrowband (board) volume continuous production of large diameter welded (φ1016mm ~ φ2400mm) pipe, the production process is simple, low cost, low-cost operation has advantages in the medium and large caliber low pressure pipes, heat pipe and piling pipe market has a price advantage, but in the pressure pipeline projects, especially in the application of the gas pipeline should have the necessary hardware configuration, such as non-destructive testing and chemical testing facilities, enhance quality assurance.
Currently, oil and gas in our country has formed a spiral oil pipeline factory dominated system belongs to the basic pattern. Low residual stress and tube end forming machine and other advanced technology to produce flaring, and undergo a rigorous quality control spiral pipe, the quality can be comparable with the Longitudinal, in our natural gas and other long-distance gas pipeline project to get widely used, is the construction of oil and gas pipelines used in the main tube. Its current production capacity has been able to meet our long-distance gas pipeline construction needs, and has been exported. Therefore, we should focus on strengthening the technical transformation of existing units, and strictly control the construction of new capacity.
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