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, 863,6018 1074 1074 116 1074 Qalinligi 9,53 1081 1066 1074 1.050 1.050 1.050 114 1.050 chàn (mm) 10 1.043 1.027 1,...
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