API 5L GR.B/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL PIPE FOB TIANJIN Taobh a-muigh Trast-thomhas 外 径 (mm) USD/TON 406 457 508 609.6 711.1 762 812 863.6 Wall 68 668 Tighead 9.53 669 656 663 644 649 644 649 649 壁厚 (mm) 10 637 624 631 644 649 644 649 649 12. .
Leugh tuilleadh