Steel Square & Rectangular Tube

The closed geometry provides useful torsional rigidity and efficient distribution of material around the section. Compared with open profiles, square and rectangular tubes can provide clean external surfaces and convenient connection points for fabricated assemblies. They can be welded, cut, drilled, notched, punched, bent, and assembled according to the requirements of the project and the properties of the selected grade.

Important specifications include outside width and height, wall thickness, length, steel grade, manufacturing method, corner radius, straightness, dimensional tolerance, and surface treatment. Products may be supplied in black carbon steel, galvanized steel, stainless steel, or other finishes.

For structural applications, section dimensions should be selected according to span, loading, connection method, buckling resistance, torsional requirements, and applicable engineering standards. For general fabrication, dimensions may instead be driven by fit, appearance, weight, and ease of processing.

Steel Square & Rectangular Tube is a highly practical material for building strong, clean-looking frames and fabricated structures. Galvanized or coated options can improve resistance to outdoor exposure, while stainless steel can be considered for corrosive, hygienic, or architectural environments.