API 5L/ASTM A53 GR.B, CARBON STEEL, SSAW STEEL PIP FOB TIANJIN USD/TON Kunze Diameter 外径 (mm) 219 273 324 356 406 457 508 610 711 307 707 Thick 7 707 707 Thick 707 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 ...
Verenga zvimwe