What does welded I-beam I400*1200*12*20 mean?
The width of 400mm, height 1200mm, web thickness 12mm, the thickness of flange 20mm.Generally expressed as: height H * width B * web thickness t1 * wing plate thickness T2
Both sides are flat wide and 400mm with 12mm thick platesThe total height is 1200mm, and the middle ribs are 20mm thick plates
