API 5L/ASTM A53 GR.B, CARBON STEEL, SSAW STEEL PIPE FOB TIANJIN USD/TON Sab Nraud Diameter 外径 (mm) 219 273 324 356 406 457 508 610 715 5 Wall 6 556 556 556 556 556 561 561 561 561 壁厚 (mm) 7 556 556 556 556 556 556 556 556 561 561 561 561 ...
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