For construction, platform & bridge building, Stadium and Metro Station, Green House For construction, platform & bridge building, Stadium and Metro Station, Green House Standard: GB/T6725-2008, ASTM A500, EN 10219, EN10210 Steel Grade: Q195-Q345, 500B/C, S235JR, S355JR, S355J2H WidthHeightW/T(mm)(mm)(mm)1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 10.0 12.0 14.0 16.0 20.0 25.0 30.0 2020√√√ 2525√√√ 3030√√√ ...