Square Hollow

The square hollow structural shape (HSS) features four equal-length sides forming a square profile with a hollow interior. This design offers excellent resistance to torsional (twisting) forces and provides high strength and stability against buckling, especially when used as columns. Compared to solid square sections of similar outer dimensions, square hollow sections are more material-efficient for resisting bending and compressive loads, making them ideal for applications such as columns, beams, and elements in truss structures where a good strength-to-weight ratio is beneficial.