API 5L/ASTM A53 GR.B, CARBON FERRUM, SSAW FERRUM FOB TIANJIN USD/TON Extra Diameter (mm) 219 273 324 356 406 457 508 610 711 762 813 914 Wall Crassitudo 6 556 556 556 556 556 556 556 556 561 561 561 561 (mm) 7 556 556 556 556 556 556 556 556 561 561 561 561 ...
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