The flanges of H-beams are parallel or nearly parallel on both the inside and outside, with the flange ends forming right angles, hence the name Parallel Flange Beam. The web thickness of H-beams is smaller than that of standard I-beams, while the flange width is larger, hence also known as Wide Flange Beam. Due to its shape, the H-beam has a significantly higher section modulus, moment of inertia, and corresponding strength compared to standard I-beams of the same weight. Used in various metal structures to withstand bending moments, pressure loads, and eccentric loads, it demonstrates superior performance, significantly increasing load-bearing capacity and saving 10% to 40% of metal compared to standard I-beams. H-beams, with their wide flanges, thin webs, numerous specifications, and flexible use, can save 15% to 20% of metal in various truss structures. Their parallel flanges and right-angled ends facilitate assembly and combination into various components, thereby saving approximately 25% of welding and riveting work, greatly accelerating construction speed and shortening the project timeline.