Best Steel Tubes Under $100 (2026)
We ranked products by value score using material grade (A500/A513), wall thickness, length options, finish, and overall vendor specification transparency for items under $100
The Verdict
- Best Overall: A500/A513 Carbon Steel Square Tubing 2.5in x 0.12in x 36in — Best for sturdy frames: 2.5" square A500/A513 carbon steel with a heavier wall for structural projects
- Best Value: A500/A513 Carbon Steel Square Tubing, hot rolled, 1.5" x 3/16" x 36" — Best for general fabrication: hot-rolled A500/A513 1.5" square tube with mid-range wall thickness for strength and weldability
Top Picks
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1
Best Overall A500/A513 Carbon Steel Square Tubing 2.5in x 0.12in x 36in
Best for sturdy frames: 2.5" square A500/A513 carbon steel with a heavier wall for structural projects
Square carbon steel tubing, hot rolled, with good weldability and low cost. Customers note solid quality and suitable size for projects
- A500/A513 steel with good weldability
- hot rolled square tubing
- common North American steel tubing
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2
Best Value A500/A513 Carbon Steel Square Tubing, hot rolled, 1.5" x 3/16" x 36"
Best for general fabrication: hot-rolled A500/A513 1.5" square tube with mid-range wall thickness for strength and weldability
Carbon steel square tubing for structural framing, supports, and architectural metalwork. Durable, high-strength tube suitable for frameworks and hobby projects. One customer notes it’s a 4-foot stick and good value for money
- durable carbon steel
- square tubing for rigidity
- versatile for various projects
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3
OnlineMetals A500/A513 carbon steel square tube, 1.5" x 0.065" wall, 36"
Best for lightweight builds: 1.5" square structural tube with a thin 0.065" wall for reduced weight and easier cutting
Square carbon steel tube for structural framing and supports. Durable, suitable for commercial and hobbyist projects; customers cite good quality and value, with mixed rust reports
- high-strength carbon steel
- structural integrity
- versatile for frameworks
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4
1/4" Wall x 2" x 2" Steel Square Tube (custom lengths)
Best for custom lengths: 2" square 1/4" wall steel tube available in cut-to-size options for tailored projects
Steel square tube with 1/4" wall thickness and 2" x 2" cross-section. Cut length tolerance ±1/8"; custom lengths available. Versatile for durable fabrications. Customers note good quality and clean steel, with mixed value perceptions
- 1/4" wall thickness
- 2" x 2" square tube
- custom length options
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5
OnlineMetals A500/A513 carbon steel square tube, 3.5in x 0.25in wall, 12in length
Best for compact heavy-duty parts: 3.5" square tube with a thick 0.25" wall that adds rigidity in short lengths
Carbon steel square tubing with hot-rolled finish, suitable for structural supports and frameworks. customers note good quality and value; size noted as 4-foot length in feedback
- high-strength carbon steel
- square tubing with durable finish
- versatile for structural and architectural use
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6
A500/A513 carbon steel square tubing, hot rolled, 2"x0.065" wall, 24" length
Best for 2" projects: 2" square hot-rolled tube with a thin wall suited for light framing or accessory builds
Square tubing crafted from high-strength carbon steel for structural integrity in frameworks, machine supports, and architectural metal projects. Customers note good quality and value for money, with some concerns about rust resistance
- high-strength carbon steel
- structural integrity
- versatile for multiple projects
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7
OnlineMetals A500/A513 Rectangular Tubing, hot rolled, 1x2x0.12
Best for non-square needs: 1x2" rectangular A500/A513 tube offering directional stiffness for specific structural uses
Rectangular carbon steel tubing, hot rolled for strength and weldability. Durable A500/A513 material with good value and reliable sizing, as noted by customers
- A500/A513 steel with good weldability
- rectangular tubing 1x2 nominal
- hot-rolled for strength
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8
OnlineMetals A500/A513 Carbon Steel Square Tubing, 1.5" x 3/16" x 24"
Best for medium-length projects: 1.5" A500/A513 square tube in a 24" length with balanced wall thickness for assembly work
Square carbon steel tubing for structural framing and supports. Durable construction suited for frameworks, machinery, and architectural metals. Customers note good quality and value, with some concern about rust resistance
- high-strength carbon steel
- square tubing crafted for structural integrity
- versatile for multiple project types
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9
A500/A513 Carbon Steel Square Tubing, Hot Rolled, 4 in x 1/4 in x 12 in
Best for larger sections: 4" square hot-rolled A500/A513 tube with thicker wall for heavier structural framing
Square carbon steel tubing for structural applications, offering durability and strong framework support. Customers note good quality and functionality with suitable size for projects
- high-strength carbon steel
- square tubing form factor
- hot rolled finish
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10
A500/A513 Carbon Steel Square Tubing, 1.5" x 0.12" x 24"
Best for balanced strength and size: 1.5" A500/A513 square tube with a 0.12" wall providing moderate rigidity for general use
Square carbon steel tubing (A500/A513) with good strength and weldability. Noted for its size options and value, suitable for metal projects. Customer highlight: solid quality and functionality
- A500/A513 steel
- good weldability
- affordable option