A500/A513 Carbon Steel Rectangular Tubing 3in x 5in x 36in - Solid

Our review finds the A500/A513 Carbon Steel Rectangular Tubing best suited for builders, fabricators, and hobbyists who need dependable, economical structural material. In this review the tubing stands out primarily for its combination of common availability and practical performance: the hot rolled A36 construction delivers predictable strength and easy weldability, while the 3in height, 5in width and 0.12in wall in a 36in length make it a straightforward piece for frames, supports, and custom metalwork where standard rectangular section is required. Customers consistently report good weight, clean surface condition, and reliable welded quality.

Key Features

• Material strength: Hot rolled A36 carbon steel provides consistent structural strength suitable for general construction and framing applications.
• Weldability: The A500/A513 grades are known for easy welding, which simplifies fabrication and field repairs.
• Standard dimensions: The 3in by 5in profile with a 0.12in wall and 36in length gives predictable geometry for design and repeatable fitment.
• Value: As a common North American tubing type, it offers low cost relative to specialty alloys while remaining robust for many projects.
• Finish and condition: Customers note parts frequently arrive clean with no rust, reducing prep time before welding or painting.

Who It's For

The tubing is a good match for contractors, small fabricators, and DIY metalworkers who need a reliable, economical rectangular section for structural frames, gates, benches, or supports. Its ease of welding and typical A36 tensile properties make it handy for both shop and site work.

Those who need precision cold-drawn tolerances, corrosion-resistant alloys, or decorative stainless finishes should look elsewhere; this product is intended as a general-purpose hot rolled structural tube, not a specialized ornamental or stainless solution.

Pros & Cons

Pros

• Strong, predictable performance from hot rolled A36 carbon steel for structural use.
• Good weldability, which customers report as a practical benefit during fabrication.
• Arrives in usable condition with minimal rust or surface issues, saving preparation time.
• Standard size and wall thickness that fit many common projects and fixtures.

Cons

• As hot rolled A36 material, it lacks the corrosion resistance of stainless or coated steels, so additional protection is needed for outdoor exposure.
• The product is a general-purpose tube and not suitable when tight dimensional tolerances or specialty grades are required.

Specifications

Our Verdict

The A500/A513 Carbon Steel Rectangular Tubing is a practical, cost-effective choice for general structural work and metal fabrication where standard strength and easy welding matter. Buyers who need a dependable rectangular section at a reasonable price will find good value here, provided they apply appropriate corrosion protection for outdoor use.

Frequently Asked Questions

Is this tubing weldable?
Yes. The A500/A513 hot rolled A36 composition is known for good weldability and is commonly used in welded structural applications.

Will it rust if used outdoors?
Yes, the carbon steel can rust if left unprotected; painting, galvanizing, or other coatings are recommended for outdoor exposure.

Does it meet standards?
It meets ASTM-A513 and typically A500 (call for availability), making it suitable for many structural projects.