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  • Acceptance standard and method of spiral steel pipe
    Acceptance standard and method of spiral steel pipe
    2022-06-30

    1. The acceptance principle of spiral steel pipe.The quality inspection and acceptance of the spiral welded pipe shall be carried out by the technical quality supervision department of the supplier. The supplier must ensure that the delivered spiral welded pipe meets the requirements of the correspo

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  • How to improve the quality of spiral steel pipes
    How to improve the quality of spiral steel pipes
    2022-06-29

    Spiral steel pipe maintenance medium transportation is an important part of it. Spiral steel pipe is the anti-corrosion of the outer wall of high-grade steel oil, gas, water, and heating pipelines, and the durability of spiral steel pipe has improved to a better level. The durability of the spiral s

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  • Performance comparison of spiral steel pipe and straight seam steel pipe
    Performance comparison of spiral steel pipe and straight seam steel pipe
    2022-06-28

    1. Welding processIn the welding process, the welding method of the spiral steel pipe and the straight seam welded pipe is the same, but the straight seam welded pipe will inevitably have many T-shaped welds, so the probability of welding defects is greatly increased, and the welding residual stress

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  • What are the detection methods of oil casing
    What are the detection methods of oil casing
    2022-06-27

    1. Ultrasonic detection When the ultrasonic wave is dispersed in the tested raw material, the acoustic characteristics of the raw material and the transformation of the internal structure will positively impact the ultrasonic wave propagation. By detecting the affected level and situation of the ult

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