This new A513 steel square tube is sold cut to length, with options up to 48 inches, making it a practical choice for fabrication, repair work, shop projects, and custom metal builds. The hot rolled finish may suit buyers who need structural steel for welding, brackets, frames, supports, or general utility use. Free shipping is included, which can help with overall project planning and cost comparison. Because exact wall thickness, outside dimensions, and other specifications are not provided here, check the listing for full details before ordering. If you are matching an existing build, confirm the required size and length carefully to avoid fit issues and extra cutting. Steel Square Tube A513 | Up to 48" Length | Hot Rolled | Cut to Length | Fabric. Condition: New. Listed at 17.95 USD. Steel Square Tube – A513 Hot Rolled. • Finish: Hot rolled / mill scale. We cut all tubing in-house. Cut tolerance is +/- 1/16". • Wall Thickness: Multiple. • Length: Multiple. Material Specs. • Condition: New.Steel Square Tube – A513 Hot Rolled. • Finish: Hot rolled / mill scale. We cut all tubing in-house. Cut tolerance is +/- 1/16". • Wall Thickness: Multiple. • Length: Multiple. Material Specs. • Condition: New.