T Section Steel — Hot-Rolled, Split and Welded T Beams. Height 100–400 mm · Q235B / Q355B · GB/T 11263 · CE & EN 1090-1. A T-section steel member places the web on the centre line and leaves a flat face on top. That flat face is the reason it exists: where an H-beam would put steel on the wrong side of the fixing, a T-section sits flat against the plate, the deck or the rail. There are three ways to make one, and they are not interchangeable. Three Ways to Make a T-Section