I-Beam and H-beam
The flanges of H-shaped steel are all of equal thickness, with rolled sections, and also combined sections composed of 3 plates welded. I-beams are rolled sections. Due to the poor production process, the inside edge of the flange has a 1:10 slope. H-shaped steel is different from ordinary I-beams in that it only uses one set of horizontal rolls. Because its flange is wide and has no slope (or small slope), it is necessary to add a set of vertical rolls to perform rolling at the same time. , Its rolling process and equipment are more complicated than ordinary rolling mills. The height of the largest rolled H-beam that can be produced in China is 800mm, which exceeds the welding cross section.
H-section steel is an economical section steel with better cross-section mechanical properties than I-beams. It is named because its cross-sectional shape is the same as the English letter "H". The flanges of hot-rolled H-beams are wider than I-beams, have greater lateral stiffness, and are more resistant to bending. H-beams are lighter than I-beams under the same specifications.
The flanges of I-beams are thicker on the web with a variable section and thinner on the outside; the flanges of H-beams are of equal section.
The side length of I-beam is small and the height is large, it can only bear the force in one direction. H-shaped steel grooves are deep and thick, and can withstand forces in two directions.
I-beam can only be used for beams, and H-beam can be used for load-bearing columns of the structure.
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