LSAW Steel Pipe (Longitudinal Submerged Arc Welded Pipe)UO(UOE)、RB(RBE)、JCO(JCOE) DSAW(Double-side Submerged Arc Welded Pipe) 1. Size: OD: 219mm-1820mm / WT: 5-50mm 2. Standard: API 5L, EN10217, GB/T9711, DIN2458 3. Material: GR ...Read More