https://www.steelseiko.com/products/steel-h-beam/
H shape steel beam is an economical section and high-efficiency profile with more optimized cross-sectional area distribution and more reasonable strength-to-weight ratio. Steel H beam is named because its cross section is the same as the English letter "H". Since all parts of h beam frame are arranged at right angles, H steel beam has the advantages of strong bending resistance, simple construction, cost saving and light weight in all directions, and has been widely used.