API 5L/ASTM A53 GR.B, CHUMA CHA CARBON, SSAW STEEL BOMBA FOB TIANJIN USD/TON Kipenyo cha Nje 外径 (mm) 219 273 324 356 406 457 508 610 711 35594 Thickness 4 4 94 92 549 549 549 549 549 554 554 554 554 壁厚 (mm) 7 549 549 549 549 549 549 549 549 554 554 554 554 ...
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