The flanges of H-beams are of equal thickness, with a rolled section, and a combined section consisting of three plates welded. Ordinary I-beams are all rolled sections, and due to poor production processes, there is a 1:10 slope inside the flange. H-beam rolling differs from ordinary I-beams in that only one set of horizontal rolls is used. Since the flanges are wide and have no slope (or a small slope), a set of vertical rolls must be added and rolled simultaneously. Its rolling process and equipment are more complex than ordinary rolling mills. The maximum size of the rolled H-beam that can be produced in China is 800mm, which exceeds the welded joint section.
Narrow flange h-beams are suitable for beams or bent members, while wide flange h-beams and h-beams are suitable for axial compression members or compression members. Compared with HW and HN steels, ordinary I-beams and light I-beams are not as heavy as H-beams under the premise of equal weight.
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