2in x 3in x 0.1875in Carbon Steel Rectangular Tubing 36in Length

In this review the focus is on a single-length structural tube that suits fabricators, hobby welders, and light construction work. The reviewer found the OnlineMetals A500/A513 rectangular tubing to be a straightforward, heavy-duty section that earns recommendation mainly for its combination of common steel grade and practical dimensions. Its biggest selling point is reliable material performance for structural and general fabrication uses, making it a sensible buy when strength, weldability, and cost are the priorities.

Key Features

• A500/A513 steel grade: Offers good strength and predictable mechanical properties useful for structural projects and general fabrication.
• 2in x 3in profile: A compact rectangular shape that fits small frames, braces, and custom furniture without excess bulk.
• 0.1875in wall thickness: Provides a sturdy wall that balances weight and rigidity for welding and load-bearing uses.
• 36in single length: A convenient one-piece length for cutting, joining, or use as a finished component in assemblies.
• Meets ASTM-A513/A500: Conformance to common standards ensures consistent quality suitable for many industrial and DIY applications.
• Hot rolled surface: A utilitarian finish that is easy to prep and weld and often arrives clean and free of significant rust.

Who It's For

This tubing is best for metalworkers, small shop fabricators, and contractors who need a reliable, economical rectangular section for frames, supports, or repair work. It is also well suited for automotive and appliance-related builds where common structural steel grades are required.

Those who need precision cold-drawn finishes, extremely tight dimensional tolerances, or decorative surfaces should look elsewhere; this product is intended as functional hot-rolled structural tubing rather than a finished architectural member.

Pros & Cons

Pros

• Good strength-to-cost ratio for structural and general fabrication projects.
• Weldability is straightforward, making it practical for common shop welding processes.
• Arrives in a usable length and size with consistent wall thickness for predictable performance.
• Customers report clean deliveries with no significant surface rust, simplifying prep work.

Cons

• Hot rolled finish is utilitarian and may require additional surface treatment for cosmetic projects.
• Not intended where precision or decorative-grade tubing is required.

Specifications

Material	Carbon steel (A500/A513)
Height	2in
Width	3in
Wall thickness	0.1875in
Length	36in
Finish	Hot rolled
Standards	Meets ASTM-A513, ASTM-A500 (call for availability)

Our Verdict

The 2in x 3in x 0.1875in A500/A513 rectangular tubing is a pragmatic choice for builders and hobbyists who need dependable, weldable steel in a ready-to-use 36in length. Its balance of strength, weldability, and low cost makes it strong value for structural and repair work, though those needing finished aesthetics or tight tolerances should consider other options.

Frequently Asked Questions

Is this tubing weldable?
Yes. A500/A513 steel is commonly welded with standard shop practices and is noted for good weldability.

Will it arrive rusted?
Customers generally report the tubing arrives clean with minimal or no surface rust, though local storage conditions can vary.

Is the wall thickness consistent?
The product specifies a 0.1875in wall and is suitable for projects that require consistent, structural wall thickness.