API 5L GR.B/ASTM A53 GR.B, KARBON STEEL, LSAW po'lat quvur FOB TIANJIN tín (mm) USD/TON 406 457 508 609.6 711.1 762 816 Devor 866 866. 668 673 673 Qalinligi 9,53 674 662 668 649 654 649 654 654 hàn (mm) 10 642 629 636 649 654 649 654 654 12...
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