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(Longitudinal Submerged Arc Welded Pipe) DSAW(Double-side Submerged Arc Welded Pipe)...
ERW Steel Pipe (Electric Resistance Welded Pipes), EFW 1. Outer diameter: 6-610...
SSAW(spiral submerged-arc welded pipe) 1. Outer diameter: 219mm-4064mm 2. Wall thic...
1. Outer Diameter: Hot finish: 400 – 1020mm,  Cold drawn:3.72 – 457mm 2. Wall T...