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 74 674 Tighead 9.53 694 681 687 669 674 674 674 674 壁厚 (mm) 10 662 650 656 669 674 674 674 674 12. .
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