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  • 2022-08-19

    Influence of Hot Rolled Coil Quality on Forming and Welding of HFW Pipe

    In recent years, using hot-rolled coils as raw materials, the process of HFW high-frequency welding + thermal tension reduction + full tube body heat treatment has been widely used to produce high-precision, high-grade steel casings. In production applications, it is found that the quality of hot-ro

  • 2022-05-12

    Magnetic arc blowing phenomenon in steel pipe welding

    During the welding operation, the phenomenon that the magnetic arc blowing affects the welding process sometimes occurs. The formation of the magnetic arc blow is the result of the presence of residual magnetism in the pipe metal.Generally, residual magnetism is divided into two types: induction mag

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