The flanges of H-shaped steel are parallel or nearly parallel on both sides, with the flange ends forming right angles, hence the name Parallel Flange Beam. The web thickness of H-shaped steel is smaller than that of a standard I-beam of the same height, while the flange width is greater, earning it the alternate name Wide Flange Beam. Due to its shape, the H-shaped steel has a significantly higher section modulus, moment of inertia, and strength compared to a standard I-beam of the same weight. Used in various metal structures to withstand bending moments, pressure loads, and eccentric loads, it demonstrates superior performance, significantly enhancing load-bearing capacity and saving 10% to 40% of metal compared to standard I-beams. The wide flanges, thin webs, multiple sizes, and flexibility of H-shaped steel allow for a 15% to 20% metal savings in various truss structures. Its parallel flanges and right-angled ends facilitate assembly and combination into various components, saving approximately 25% in welding and riveting work, greatly accelerating construction speed and shortening project timelines.