API 5L/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL QURU FOB TIANJIN tashqi diametri chàn (mm) USD/TON 406 457 508 609,6 711,1 762 812 863,601, devor 863,601, 863,601 1050 1050 1050 1050 Qalinligi 9,53 1074 1043 1050 1,027 1,027 1,027 1,027 1,027 chàn (mm) 10 1,035 1,00...
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