API 5L/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL QURU FOB TIANJIN tashqi diametri màng (mm) USD/TON 406 457 508 609,6 711,1 762 812 861,601, devor 1,079 1,082 1,079 1,079 Qalinligi 9,53 1,086 1,071 1,079 1,055 1,055 1,058 1,055 1,055 chàn (mm) 10 1,047 1,03...
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