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longitudinal seam arc welding pipe

Longitudinalseam Submerged Arc Welded (LSAW) pipes | Longitudinalseam Submerged Arc Welded (LSAW) pipes were made of steel plates cut from leveled hot rolled coils by both the JCOE and UOE (the forming process in which the plate like the letter “J”, “C”, “O” or “U” shape, then expansion) forming processes.

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