Square Steel Tube Square Steel Tube is a welded structural grade tubing that is available in either type A513 or A500 Grade B, depending on it's size and wall thickness. Either grade is ideal for all structural applications, general fabrication, manufacturing and repairs. Steel Square Tube is widely used in industrial maintenance, agricultural implements, transportation equipment, truck beds, trailers, frames, etc. It's box-shape configuration allows for much greater strength and rigidity compared to angles or channels. This steel shape is easy to weld, cut, form and machine with the proper equipment and knowledge. Metals Depot stocks hundreds of sizes of square tube at wholesale prices in ready to ship precut and mill lengths or you can order just what you need custom Cut to Size in any quantity. About SPECIFICATIONS: ASTM A513 (1020-1026) ASTM A500 Grade B FINISH: A513 - Dark Blue/Black, smooth slight oil coating A500 - Blue/Dark Gray, slightly grainy, dry CHARACTERISTICS: Welding = Excellent Machining / Grinding = Good Bending / Forming = Fair Wear Resistance = Fair Corrosion Resistance = Poor MECHANICAL PROPERTIES: Yield Point = 62 ksi (A513); 46 ksi (A500) Tensile Strength = 72 ksi (A513); 58 ksi (A500) Elongation in 2" = 10% (A513); 23% (A500) Outside Corner Radius = 3X wall max. *Data provided for reference only AVAILABLE STOCK SIZES: 2ft, 4ft. 6ft, 8ft, 12ft, 24ft, or Cut to Size Stock lengths may vary +/- 1/4" HOW TO MEASURE: Height (A) X Width (B) X Wall Thickness (C) X Length California Residents Warning! Filter By: Height (A) Width (B) Wall Thickness (C) Select Size & Quantity to Add to Cart 1/2 X 1/2 X 18 GA (.049 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1/2 X 1/2 X 16 GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 5/8 x 5/8 x 16GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 3/4 X 3/4 X 16 GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 3/4 X 3/4 X 14 GA (.083 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 3/4 X 3/4 X 11 GA (.120 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 7/8 X 7/8 X 16GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1 X 1 X 16GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1 X 1 X 14 GA (.083 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1 X 1 X 12 GA (.105 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1 X 1 X 11 GA (.120 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/4 X 1-1/4 X 16GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/4 x 1-1/4 x 14 GA (.083 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/4 X 1-1/4 X 12 GA (.109 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/4 X 1-1/4 X 11 GA (.120 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/4 X 1-1/4 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 1-1/2 X 1-1/2 X 16GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/2 X 1-1/2 X 14 GA (.083 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/2 X 1-1/2 X 12 GA (.109 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/2 X 1-1/2 X 11 GA (.120 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-1/2 X 1-1/2 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 1-1/2 X 1-1/2 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 1-3/4 X 1-3/4 X 14 GA (.083 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-3/4 X 1-3/4 X 11 GA (.120 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 1-3/4 X 1-3/4 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 2 X 2 X 16GA (.065 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 2 X 2 X 14 GA (.083 wall) A513 Square Steel Tube Select Size Select a Size Add To Cart 2 X 2 X 12 GA (.109 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 2 X 2 X 11 GA (.120 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 2 X 2 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 2 X 2 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 2-1/4 X 2-1/4 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 2-1/2 X 2-1/2 X 14 GA (.083 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 2-1/2 X 2-1/2 X 12 GA (.105 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 2-1/2 X 2-1/2 X 11 GA (.120 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 2-1/2 X 2-1/2 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 2-1/2 X 2-1/2 X .238 wall (2.024" Inside) A500 Square Telescopic Tube - Smooth Inside Select Size Select a Size Add To Cart 2-1/2 X 2-1/2 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 3 X 3 X 14 GA (.083) wall A500 Square Steel Tube Select Size Select a Size Add To Cart 3 X 3 X 11GA (.120 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 3 X 3 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 3 X 3 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 3 X 3 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 3-1/2 X 3-1/2 X 11GA (.120 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 3-1/2 X 3-1/2 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 3-1/2 X 3-1/2 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 3-1/2 X 3-1/2 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 4 X 4 X 14 GA (.083) wall A500 Square Steel Tube Select Size Select a Size Add To Cart 4 X 4 X 11GA (.120 wall) A500 Square Steel Tube Select Size Select a Size Add To Cart 4 X 4 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 4 X 4 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 4 X 4 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 4 X 4 X 1/2 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 4-1/2 X 4-1/2 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 4-1/2 X 4-1/2 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 5 X 5 X 11GA (.120) wall A500 Square Steel Tube Select Size Select a Size Add To Cart 5 X 5 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 5 X 5 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 5 X 5 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 5 X 5 X 1/2 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 6 X 6 X 11ga (1/8") wall A500 Square Steel Tube Select Size Select a Size Add To Cart 6 X 6 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 6 X 6 X 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 6 X 6 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 6 X 6 X 1/2 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 7 x 7 x 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 7 X 7 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 7 X 7 X 1/2 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 8 X 8 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 8 x 8 x 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 8 x 8 x 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 8 x 8 x 1/2 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 8 X 8 X 5/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 10 X 10 X 3/16 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 10 x 10 x 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 10 X 10 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 10 X 10 X 1/2 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 12 x 12 x 1/4 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 12 X 12 X 3/8 wall A500 Square Steel Tube Select Size Select a Size Add To Cart 12 X 12 X 1/2 wall A500 Square Steel Tube Select Size Select a Size Add To Cart Any Quantity, Any Size ... 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