Rectangular Steel Tubing Supplier
T&B Tube is a leading Rectangular Steel Tube Supplier, stocking various sizes, wall thicknesses, and finishes. Our rectangular steel tubing is available in hot-rolled and cold-rolled forms following ASTM A513 requirements, unless otherwise stated.
Rectangular steel tubing comes in both hot-rolled and cold-rolled forms, and the right one depends on what the part needs to do. Hot-rolled rectangular tube is shaped at high temperature, which keeps cost down and holds up well in structural framing, brackets, and other load-bearing applications where a scaled mill surface isn't a problem. Cold-rolled rectangular tubing is reworked at room temperature after hot rolling, tightening wall tolerances and producing a smoother, paint-ready finish suited to parts that are visible in the finished product or need a precise weld.
Buyers framing structural or load-bearing assemblies typically spec hot-rolled rectangular steel tubing; buyers building fixtures, seating, or other cold-rolled rectangular tubing components where fit and finish matter typically spec cold-rolled.
| Rectangles | Thickness Min. | Thickness Max. | Weld Location | |
| .5x1 | 0.03 | 0.09 | 1 | |
| 15mmx30mm | 0.043 | 0.09 | 30 mm | |
| .375x1.5 | 0.043 | 0.09 | 1.5 | |
| .5x1.5 | 0.043 | 0.091 | .5 or 1.5 | |
| .75x1.25 | 0.043 | 0.126 | 1.25 | |
| .75x1.5 | 0.043 | 0.126 | .75 or 1.5 | |
| 1x1.5 | 0.043 | 0.126 | 1 or 1.5 | |
| 1x2 | 0.056 | 0.147 | 1 or 2 | |
| 1x2.75 | 0.056 | 0.192 | 2.75 | |
| 1x3 | 0.056 | 0.192 | 1 or 3 | |
| 1.5x2 | 0.056 | 0.126 | 1.5 or 2 | |
| 1.5x2.5 | 0.056 | 0.126 | 1.5 or 2.5 | |
| 1.5x3 | 0.056 | 0.192 | 1.5 or 3 | |
| 2x3 | 0.056 | 0.192 | 2 or 3 |
The wall thickness range listed for each rectangular tube size reflects what T&B Tube stocks and can cut to length without a special mill run, from light-gauge .5x1 up to heavier 2x3 stock. Weld location matters for finishing and downstream fabrication: a tube welded on a flat face machines and paints differently than one welded on a corner, so match the weld location to how the part will be processed or seen once it's installed. For dimensions or wall thicknesses outside this table, check the tube rolling dates and size chart or request a quote directly.
Every size above is produced to ASTM A513 requirements. If your design calls for an equal-sided profile, we also make square steel tubing, and round steel tubing is available in the same finishes.
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Benefits of Rectangular Steel Tubes
Rectangular steel tubing is steel tubing with inside and outside radius corners. The tubing’s width is longer than its height. Fabrication consists of hollowing out metal coils, creating a rectangular shape. Rectangular steel tubes offer many performance advantages.
- High Strength-To-Weight Ratio
- Uniformity
- Strength
- Cost-Effective
- Easy To Machine
- Simple To Weld
Your Tubing, Your Lengths
T&B Tube cuts rectangular steel tubing to customer-specified lengths using precision saw-cutting process lines. Holes or intricate shapes are made using advanced laser-cutting equipment.
Deburring removes unwanted metal shavings and rough edges, making the material safe to handle and ready to process upon receiving. This process is applied to the tube’s outside and inside diameters.
Applications for Rectangular Steel Tubing
With a rectangularly shaped profile, this steel tube type is used in an array of applications, including:
- OEMs: Mill-certified rectangular tube with dimensions that hold consistent from batch to batch on production lines.
- Steel Fabricators: Cut-to-length, deburred rectangular tube ready to weld into custom assemblies without added prep.
- Steel Service Centers: Stocked in standard rectangular tube sizes and thicknesses, sized to distribution forecasts.
- Structural: Hot-rolled rectangular steel tubing for framing and load-bearing builds where strength per pound matters more than surface finish.
- Store Fixtures, Displays, and Racks: Cold-rolled rectangular tubing with a smooth finish that skips extra prep before paint or plating.
- Office and Institutional Furniture: Uniform wall thickness for clean, repeatable welds across high-volume furniture runs.
- Lawn and Garden: Rectangular tube frames and handles where a paint-ready surface matters to the end user.
- Transportation Seating: Tight tolerances that keep fit consistent through repetitive assembly.
- Material Handling: Rectangular tube built into carts, racks, and shelving designed for repeated use.
- Recreational Vehicles, or RVs: Structural and interior framing components sized to spec for RV manufacturing lines.
Steel rectangular tubes can add additional strength to a project while also concealing wires, pipes, and other parts. Typical uses are metal structures, furniture frames, and machinery parts.
Higher Expectations, Better Service
Manufacturers and distributors need vendors who provide solutions and eliminate waste. Many mills can’t deliver fully finished rectangular steel tubes, forcing clients to outsource processes.
With T&B Tube, it’s quite the opposite. As a premier rectangle steel tube supplier, we have a full suite of value-added services that streamline your supply chain. Our facility offers the following processes.
Solutions That Fit
T&B Tube cuts, laser-cuts, and deburrs rectangular steel tubing in-house, so nothing gets routed to a third-party processor before it reaches you. Request a quote for rectangular steel tubing sizing, lead times, and pricing.
Frequently Asked Questions
T&B Tube stocks rectangular tube from .5x1 up through 2x3, in the wall thicknesses shown in the table above. Custom dimensions and cut lengths are available on request.
Hot-rolled rectangular steel tubing is more economical and holds up well in structural or load-bearing work. Cold-rolled rectangular tubing costs more but delivers tighter tolerances and a smoother, paint-ready surface for parts that show or need a precision weld.
T&B Tube manufactures rectangular steel tubing in-house and supplies it directly, so buyers work with the same company for production, processing, and inventory management rather than routing through a separate distributor.
Yes. Rectangular tube can be cut to specified lengths and further processed with laser cutting or deburring before it ships.
Markets Served
OEMs
For original equipment manufacturers (OEMs) seeking reliable steel tubing solutions, T&B Tube offers fast delivery, high-quality materials,…
Steel Fabricators
For steel fabricators in search of high-performance tubing, T&B Tube delivers expertly crafted round, square, and rectangular tubes,…
Steel Service Centers
For steel service centers seeking dependable mechanical steel tubing, T&B Tube offers competitively priced, high-quality products that…
Structural
At T&B Tube, we supply steel tube for various structural applications.
Store Fixtures, Displays & Racks
T&B Tube can produce our steel tube to the A500 standard as well as HSLA Grades 50, 60 and 70
Office & Institutional Furniture
T&B Tube offers high-quality steel tubing for office furniture manufacturers.
Lawn & Garden
At T&B, we value the ability to assist each customer directly and offer flexible solutions to your steel tube needs.
Transportation Seating
Our steel tubes have been used in the seating for pickup trucks, high-speed rail, and seating across all ground transportation products.
Material Handling
Whether you need steel tube products for storage racks, scaffolding, or heavy-duty carts, we are here to supply you with your steel…
RV Industry
Our durable steel products have been used across the RV in items such as interior furniture, seating, axles, and chassis.
