... . Zinc coating: 240g/m2-350g/m25. Unequal angle bars: 20*20*2-200*200*20(mm)7. Material: Q235, Q3458. Application: shipbuilding, steel tower ... , construction, electric utility industry, etc... Material(Steel Grade)Size (b×b×d) (mm ... )Q 235 A /BQ 345 A20×20×363×63×5100×100×6140×140×1420 ...