API 5L / ASTM A53 GR.B, CARBON STEEL, SSAW STEEL PIPE FOB TIANJIN USD/TON Sab Nraud Diameter 外径 (mm) 219 273 324 356 406 457 508 610 7145 6 Thickness 6 7. 7 567 567 567 567 567 572 572 572 572 壁厚 (mm) 7 567 567 567 567 567 567 567 567 572 572 572 572 8 567 ...
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