API 5L/ASTM A53 GR.B, CHUMA CHA CARBON, SSAW STEEL BOMBA FOB TIANJIN USD/TON Nje Kipenyo 外径 (mm) 219 273 324 356 406 457 508 610 711 3ll 707 Thick 7 7 Thick 7 707 7 Thick 7 702 7 707 707 707 707 711 711 711 713 716 壁厚 (mm) 7 707 707 707 707 707 707 707 711 711 711 713 716 8 707 ...
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