Hot Rolled Steel Rectangular Tube - 5 Inch X 3 Inch X 0.18
A500B Hot Rolled Steel Rectangular Tube - 5" x 3" x 0.180"
This 5" x 3" x 0.180" hot rolled rectangular steel tube is a structural grade product conforming to ASTM A500 Grade B. It offers a high strength-to-weight ratio, excellent weldability, and robust performance for load-bearing applications like building frames and trailer construction. In stock Los Angeles.
- A500 Grade B Steel Construction
- ASTM A500 Certified
- 58,000 PSI Tensile Strength
- Excellent Weldability
Hot rolled rectangular steel tubing is a structural product made to the ASTM A500 Grade B specification. The hot rolling process delivers excellent forming and welding characteristics but results in a rougher, scaled surface finish. Its combination of strength, cost-effectiveness, and weldability makes it a foundational material for construction, fabrication, and industrial manufacturing projects requiring robust, load-bearing performance.
The large 5" x 3" cross-section provides high torsional strength and compression resistance, making it ideal for heavy structural columns, building frames, trailer beds, and the bases for industrial machinery where significant load-bearing capacity and resistance to bending forces are critical.
Specifications
- Material: A500 Grade B Hot Rolled Steel
- Standards: ASTM A500
- Strength/Tensile: 58,000 PSI
- Dimensions: 5" Width x 3" Height x 0.180" Wall x 240" Length
- Finish: Hot Rolled (Mill Scale)
- Certifications: MTR Available
Applications
- Construction: Structural columns and building frames - High strength-to-weight ratio for vertical loads.
- Trailers & Automotive: Heavy-duty trailer frames and cross-members - Resists bending and torsional stress under heavy loads.
- Industrial Machinery: Machine bases and support frames - Excellent load-bearing capacity for heavy equipment.
- Racking & Storage: Warehouse racking systems - Strong resistance to compression for vertical storage.
Target Users
Structural engineers, fabricators, and heavy equipment manufacturers rely on A500B rectangular tube for its structural integrity and cost-effectiveness in projects throughout the Los Angeles area.
Finish Options
This product comes standard with a hot rolled finish, characterized by a dark, rough mill scale. This scale must be removed by grinding, sandblasting, or pickling before painting or powder coating. For specific project requirements, other finishes may be available via special order. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Rectangular tube is measured by its outside Width (A), outside Height (B), and Wall Thickness (C). Use a tape measure for dimensions and calipers for an accurate wall thickness measurement.
Example: To order this rectangular tube, specify "Hot Rolled Rectangular Tube, 5 inch x 3 inch x 0.180 inch wall".
Order Checklist
- Product name and required dimensions (5" x 3" x 0.180")
- Material specification and quantity
- Confirm grade (A500 Grade B) meets requirements
- Surface finish requirements (Hot Rolled)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- A500B Hot Rolled Steel Rectangular Tube - 5" x 3" x 0.180"
- Material
- A500 Grade B Steel
- Standards
- ASTM A500
- Key Properties
- 58,000 PSI tensile, excellent weldability, high strength-to-weight
- Primary Applications
- Structural frames, trailer beds, support columns
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock Hot Rolled Rectangular Tube in sizes from 1/2" x 1" up to 4" x 6" with various wall thicknesses. This 5" x 3" x 0.180" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

