T-section steel is a structural steel profile shaped like the letter “T,” widely used in construction, bridges, frames, and machinery. The horizontal flange resists bending, while the vertical web carries shear forces, providing good load-bearing capacity. Made from carbon or low-alloy steel, it can be hot-rolled, welded, or cut, offering strength, versatility, and ease of fabrication. Compared to I-sections, T-sections allow flexible connections and efficient use of material but require careful design of flange width and web thickness to ensure structural safety and cost-effectiveness.