API 5L GR.B/ASTM A53 GR.B, KARFE KARFE, LSAW STEEL PIPE FOB TIANJIN Waje Diamita 外径 (mm) USD/TON 406 457 508 609.6 711.1 762 812 863.6 6 657 657 Kauri 9.53 664 651 657 638 638 638 638 638 壁厚 (mm) 10 632 619 626 638 638 638 638 638 12...
Kara karantawa