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What are the differences in forming process and performance between seamless steel pipe and welded steel pipe

What are the differences in forming process and performance between seamless steel pipe and welded steel pipe
Jul 01, 2020

Seamless steel pipe and welded steel pipe are mainly different in forming process. Welded steel pipe, such as water pipe, is usually welded after bending the plate material, and a weld can be found on the surface of welded steel pipe; the larger diameter welded pipe is generally spiral welded steel pipe. The seamless steel pipe has no weld. The molten steel will be accumulated through the annular slit, and then formed by stretching and other treatment processes, to get seamless steel pipe.

seamless steel pipe

In terms of performance, especially pressure bearing capacity, seamless steel pipe is much better than welded steel pipe, so the seamless steel pipe is often used in high-pressure equipment, such as the pipeline connection of hydraulic equipment. The weld position of welded steel pipe is the weak link, and the weld quality is also the main factor affecting its overall performance.

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