Square steel tubing is a hollow, square-shaped section made from steel, commonly used in construction, manufacturing, and fabrication. Its uniform shape and strength make it ideal for structural frameworks, supports, and fencing. Square steel tubing is available in various sizes, wall thicknesses, and grades, allowing for versatile applications in both residential and industrial projects. It is often chosen for its durability, ease of welding, and resistance to deformation under load. The tubing can be galvanized or coated for enhanced corrosion resistance, making it suitable for both indoor and outdoor use.