Differenciating between straight seam and electric resistance welded pipe
Steel pipes are mainly divided into seamless steel pipes and welded steel pipes. There are two kinds of welded steel pipes: one is straight wire welding and the other is spiral welding. Welding method: high frequency welding, arc welding, etc. High-frequency welded pipes High-frequency welded pipes are generally straight-slit, but straight-slit welded steel pipes are
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