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2023-09-25

Difference between ERW Pipe and EFW Pipe

ERW steel pipe and submerged arc welding pipe significantly different, using a pressure-free filler metal welding, the weld is not filled with other ingredients, relying on high-frequency current skin effect and proximity effect,

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2023-09-25

Difference Between LSAW Steel Pipe and SSAW Steel Pipe

The welding process is concerned: a consistent spiral welded pipe and Longitudinal welding, straight seam steel pipe will inevitably have a lot of T-weld, and therefore the probability of the existence of welding defects has greatly improved

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