API 5L/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL QURU FOB TIANJIN tashqi diametri màn (mm) USD/TON 406 457 508 609,6 711,1 762 812 861,601, devor 1,012 1,012 1,012 1,012 Qalinligi 9,53 1,019 1,004 1,012 988 988 988 988 988 chàn (mm) 10 ...
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