Hot Rolled Steel Black Square Tube - 1-1/4 Inch X 0.065
Hot Rolled Steel Black Square Tube - 1-1/4 Inch X 0.065
This 1-1/4" x 1-1/4" hot rolled steel square tube features a 0.065" wall and meets ASTM A500 Grade B specifications. With a minimum yield strength of 46,000 PSI and excellent weldability, it is a cost-effective choice for structural frames, supports, and general fabrication. In stock Los Angeles.
- A500 Grade B Steel Construction
- ASTM A500 Certified
- 58,000 PSI Tensile Strength
- Excellent Weldability
Hot Rolled A500 Grade B Square Tube is formed from carbon steel at elevated temperatures, resulting in a cost-effective structural material with a dark, scaled surface. This process ensures compliance with ASTM A500 standards for structural integrity, providing a minimum yield strength of 46,000 PSI. Its composition makes it easy to cut, drill, and form, while its excellent weldability allows for strong, reliable joints in fabricated assemblies.
As a medium-sized profile, this 1-1/4" tube offers an ideal balance of strength and weight. It is frequently used for equipment frames, support structures, handrails, gate frames, and crossmembers in trailer manufacturing where rigidity and durability are essential for performance and safety.
Specifications
- Material: A500 Grade B Steel
- Standards: ASTM A500
- Strength/Tensile: 58,000 PSI
- Dimensions: 1-1/4" x 1-1/4" x 0.065" wall x 240" length
- Finish: Hot Rolled (Black/Scaled)
- Certifications: MTR Available
Applications
- Trailer Manufacturing: Frame crossmembers and tongues - High strength-to-weight ratio and weldability.
- Industrial Equipment: Machine guards and support frames - Cost-effective strength and easy fabrication.
- Fencing & Gates: Gate frames and structural posts - Provides excellent rigidity and durability.
- Construction: Non-critical support columns and structural bracing - Meets structural codes for building applications.
Target Users
Fabricators, welders, construction contractors, and trailer manufacturers rely on A500 Grade B square tube for its strength and versatility in structural applications throughout the Los Angeles area.
Finish Options
This product comes standard with a hot rolled (black) finish, characterized by a dark, scaly surface called mill scale. This surface must be removed by grinding, sandblasting, or chemical treatment before painting or powder coating to ensure proper adhesion. For enhanced corrosion resistance, painting or galvanizing is recommended for outdoor applications. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Square tube is measured by its Outer Width, Outer Height, and Wall Thickness. For this product, the width and height are both 1-1/4 inches, and the wall thickness is 0.065 inches.
Example: To order this tube, specify "1-1/4" x 1-1/4" x 0.065" Hot Rolled Square Tube".
Order Checklist
- Product name and required dimensions (1-1/4" x 1-1/4" x 0.065")
- 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
- Hot Rolled Steel Black Square Tube - 1-1/4 Inch X 0.065
- Material
- A500 Grade B Steel
- Standards
- ASTM A500
- Key Properties
- 58,000 PSI tensile, Excellent Weldability, High Strength-to-Weight Ratio
- Primary Applications
- Equipment frames, trailer manufacturing, structural supports
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock Hot Rolled Square Tube in sizes from 1/2" to 3/4" and various wall thicknesses. This 1-1/4" x 0.065" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

