Square Steel Tube is a durable, welded structural grade tubing, available in either A513 or A500 Grade B depending on your project’s size and wall thickness needs. Its box-shape design ensures greater strength and rigidity than other steel shapes, making it ideal for frames, industrial maintenance, trailers, and more. Easy to weld and machine, A1 Industrial Supply stocks a wide variety of square tubing sizes for immediate shipment or custom cut-to-size orders, always at competitive prices.

Square Steel Tube is a durable, welded structural grade tubing, available in either A513 or A500 Grade B depending on your project’s size and wall thickness needs. Its box-shape design ensures greater strength and rigidity than other steel shapes, making it ideal for frames, industrial maintenance, trailers, and more. Easy to weld and machine, A1 Industrial Supply stocks a wide variety of square tubing sizes for immediate shipment or custom cut-to-size orders, always at competitive prices.

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Steel Square Tube

Square Steel Tube is a durable, welded structural grade tubing, available in either A513 or A500 Grade B depending on your project’s size and wall thickness needs. Its box-shape design ensures greater strength and rigidity than other steel shapes, making it ideal for frames, industrial maintenance, trailers, and more. Easy to weld and machine, A1 Industrial Supply stocks a wide variety of square tubing sizes for immediate shipment or custom cut-to-size orders, always at competitive prices.

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Stock #
Item Size & Description
Weight / Ft.
Size
QTY
Price
Add to Cart
  • T11218

    T11218

    A513 Square Steel Tube

    1/2" X 1/2" X 18 GA (.049" wall)

    0.31 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T11216

    T11216

    A513 Square Steel Tube

    1/2" X 1/2" X 16 GA (.065" wall)

    0.39 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T15816

    T15816

    A513 Square Steel Tube

    5/8" x 5/8" X 16 GA (.065" wall)

    0.50 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T13416

    T13416

    A513 Square Steel Tube

    3/4" X 3/4" X 16 GA (.065" wall)

    0.60 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T13414

    T13414

    A513 Square Steel Tube

    3/4" X 3/4" X 14 GA (.083" wall)

    0.75 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T13411

    T13411

    A513 Square Steel Tube

    3/4" X 3/4" X 11 GA (.120" wall)

    1.03 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T17816

    T17816

    A513 Square Steel Tube

    7/8" X 7/8" X 16 GA (.065" wall)

    0.72 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T11116

    T11116

    A513 Square Steel Tube

    1" X 1" X 16 GA (.065" wall)

    0.82 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T11114

    T11114

    A513 Square Steel Tube

    1" X 1" X 14 GA (.083" wall)

    1.04 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T11112

    T11112

    A513 Square Steel Tube

    1" X 1" X 12 GA (.109" wall)

    1.32 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T11111

    T11111

    A513 Square Steel Tube

    1" X 1" X 11 GA (.120" wall)

    1.44 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111416

    T111416

    A513 Square Steel Tube

    1-1/4" X 1-1/4" X 16 GA (.065" wall)

    1.04 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111414

    T111414

    A513 Square Steel Tube

    1-1/4" X 1-1/4" X 14 GA (.083" wall)

    1.32 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111412

    T111412

    A513 Square Steel Tube

    1-1/4" X 1-1/4" X 12 GA (.109" wall)

    1.70 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111411

    T111411

    A513 Square Steel Tube

    1-1/4" X 1-1/4" X 11 GA (.120" wall)

    1.80 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1114316

    T1114316

    A500 Square Steel Tube

    1-1/4" X 1-1/4" X 3/16" wall

    2.40 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111216

    T111216

    A513 Square Steel Tube

    1-1/2" X 1-1/2" X 16 GA (.065" wall)

    1.26 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111214

    T111214

    A513 Square Steel Tube

    1-1/2" X 1-1/2" X 14 GA (.083" wall)

    1.67 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111212

    T111212

    A513 Square Steel Tube

    1-1/2" X 1-1/2" X 12 GA (.109" wall)

    2.07 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T111211

    T111211

    A513 Square Steel Tube

    1-1/2" X 1-1/2" X 11 GA (.120" wall)

    2.22 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1112316

    T1112316

    A500 Square Steel Tube

    1-1/2" X 1-1/2" X 3/16" wall (.180" wall)

    3.04 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1112250

    T1112250

    A500 Square Steel Tube

    1-1/2" X 1-1/2" X 1/4 "wall

    4.07 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T113414

    T113414

    A513 Square Steel Tube

    1-3/4" X 1-3/4" X 14GA (.083" wall)

    1.88 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T113411

    T113411

    A513 Square Steel Tube

    1-3/4" X 1-3/4" X 11GA (.120" wall)

    2.58 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1134316

    T1134316

    A500 Square Steel Tube

    1-3/4" X 1-3/4"X 3/16" wall

    3.68 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T12216

    T12216

    A513 Square Steel Tube

    2" X 2" X 16 GA (.065" wall)

    1.71 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T12214

    T12214

    A513 Square Steel Tube

    2" X 2" X 14 GA (.083" wall)

    2.14 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T12212

    T12212

    A500 Square Steel Tube

    2" X 2" X 12 GA (.109" wall)

    2.81 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T12211

    T12211

    A500 Square Steel Tube

    2" X 2" X 11 GA (.120" wall)

    2.94 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T122316

    T122316

    A500 Square Steel Tube

    2" X 2" X 3/16" wall

    4.32 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T122250

    T122250

    A500 Square Steel Tube

    2" X 2" X 1/4" wall

    5.41 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T121214

    T121214

    A500 Square Steel Tube

    2-1/2" X 2-1/2" X 14 GA (.083" wall)

    2.73 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T121212

    T121212

    A513 Square Steel Tube

    2-1/2" X 2-1/2" X 12 GA (.109" wall)

    3.55 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T121211

    T121211

    A500 Square Steel Tube

    2-1/2" X 2-1/2" X 11 GA (.120" wall)

    3.90 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1212316

    T1212316

    A500 Square Steel Tube

    2-1/2" X 2-1/2" X 3/16" wall

    5.59 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1212238

    T1212238

    A500 Square Telescopic Tube - Smooth Inside

    2-1/2" X 2-1/2" X .238" wall (2.024" Inside)

    6.83 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1212250

    T1212250

    A500 Square Steel Tube

    2-1/2" X 2-1/2" X 1/4" wall

    7.50 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T133083

    T133083

    A500 Square Steel Tube

    3" X 3" X 14 GA (.083" wall)

    3.24 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T13318

    T13318

    A500 Square Steel Tube

    3" X 3" X 11 GA (.120" wall)

    4.58 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T133316

    T133316

    A500 Square Steel Tube

    3" X 3" X 3/16" wall

    6.87 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T13314

    T13314

    A500 Square Steel Tube

    3" X 3" X 1/4" wall

    8.81 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T13338

    T13338

    A500 Square Steel Tube

    3" X 3" X 3/8" wall

    12.17 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T131218

    T131218

    A500 Square Steel Tube

    3-1/2" X 3-1/2" X 11 GA (.120" wall)

    5.68 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T1312316

    T1312316

    A500 Square Steel Tube

    3-1/2" X 3-1/2" X 3/16" wall

    8.15 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T131214

    T131214

    A500 Square Steel Tube

    3-1/2" X 3-1/2" X 1/4" wall

    10.51 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T131238

    T131238

    A500 Square Steel Tube

    3-1/2" X 3-1/2" X 3/8" wall

    14.72 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T144083

    T144083

    A500 Square Steel Tube

    4" X 4" X 14 GA (.083" wall)

    4.32 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T14418

    T14418

    A500 Square Steel Tube

    4" X 4" X 11 GA (.120" wall)

    6.22 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T144316

    T144316

    A500 Square Steel Tube

    4" X 4" X 3/16" wall

    9.42 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

  • T14414

    T14414

    A500 Square Steel Tube

    4" X 4" X 1/4" wall

    12.21 lb/ft

    $0.00

    Proceed To Cart

    ✅ Added To Cart

Items -99 to 80 of 80 total