Black Steel Square Tube

Black Steel Tubing, 3/8" Thick, 3-1/2" x 3-1/2" x 24', A500

A robust, high-strength structural steel tube engineered for demanding industrial, construction, and fabrication applications. This 3-1/2" x 3-1/2" A500 black steel tubing with a heavy 3/8" wall provides exceptional rigidity and load-bearing capability, making it ideal for large, high-stress structural builds.

3/8" Heavy Wall Thickness – Delivers maximum strength and stability for heavy-duty structural, mechanical, and industrial applications.

Large 3-1/2" x 3-1/2" Square Profile – Offers expanded load capacity and rigidity while accommodating large-scale framing and fabrication needs.

24-Foot Length – Supports long structural spans, minimizing seams and increasing project strength and efficiency.

A500 Structural Grade Steel – Provides consistent mechanical properties, excellent weldability, and reliable performance in commercial and industrial environments.

Black Steel Finish – Ideal for cutting, welding, machining, and fabrication without additional surface preparation.

Compatible With All Standard Welding Processes – Easily weldable using MIG, TIG, stick, or flux-cored processes.

• Large structural frames

• Industrial machinery bases

• Heavy load-bearing supports

• Construction beams and bracing

• Equipment fabrication and custom builds

• Material: Black Steel (A500)

• Wall Thickness: 3/8"

• Size: 3-1/2" x 3-1/2"

• Length: 24'