API 5L/ASTM A53 GR.B, CARBON STEEL, SSAW STEEL PIPE TIANJIN USD/TON Ngaphandle Ububanzi 外径 (mm) 219 273 324 356 406 457 508 610 711 765 58 7 Thickness 7 81 87 587 587 587 587 587 587 587 587 壁厚 (mm) 7 587 587 587 587 587 587 587 587 587 587 587 587 8 587 587 ...
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