API 5L GR.B/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE)Outside Diameter Wall Thickness FOB TIANJINOutside Diameter Wall Thickness FOB TIANJIN外径 (mm)壁厚 (mm)离港价 USD/TON外径 (mm)壁厚 (mm)离港价 USD/TON245, 2735.0-9.28671.95 450, 457, 508, 5306.5-11.98703.85 9.45-9.98674.67 12.0-14.5710.64 10.0-11.78677.39 15.