Square Bars are commonly used in structural supports, brackets, base plates, and tooling due to their dimensional consistency and high rigidity. Their symmetrical shape makes them suitable for welding, machining, and fabrication. In addition to general construction and mechanical engineering, square bars are also used in gate frames, storage racks, conveyor systems, and ornamental ironwork for their clean shape and reliable strength.

Square Bars can be made from stainless steel, carbon steel, alloy steel, duplex steel, and nickel-based alloys. The choice of material depends on the application's mechanical load, corrosion exposure, and heat resistance needs. For example, stainless steel square bars are ideal for food-grade or marine environments, while carbon steel variants are often selected for cost-effective structural reinforcement in indoor or dry settings.

They are manufactured in accordance with standards such as ASTM A276, ASTM A484, and ASME SA479, which define the required mechanical properties, chemical composition, and dimensional tolerances. These certifications ensure the material's performance under stress and provide traceability for quality assurance in international projects across sectors like oil & gas, infrastructure, and machinery.