Square Structural Tubing

Industrial Tube & Steel Corporation has been a square tubing supplier of carbon steel square tubing in A513 (mechanical) and A500 (structural) grades, in a range of sizes and wall thicknesses, for over 65 years. A500 structural carbon square tube is used in construction, buildings, towers, and sign support applications, but also in trailers and structural fabrications. A513 mechanical carbon steel square tubing is frequently used in the automotive, solar, appliance, and agriculture industries, as well as in many other types of machinery ranging from bases to supports.  All ODs below 2" with a wall thickness less than .120 inch are typically manufactured as ASTM A-513. Sizes 2" and above with a wall thickness of .120 inch and heavier are typically manufactured to ASTM A-500. Review our in-stock square tubing dimensions and sizing below. 

Square Tubing made from 1026 Steel
Meets ASTM A500 or ASTM A513
A500 Square Tubing Tolerances

Benefits of Square Structural Tubing

Strength and Durability 

Square structural tubing is made of high-strength steel, providing excellent structural integrity and durability. It can withstand heavy loads, vibrations, and shocks typically found in industrial applications.


Square structural tubing is cost-effective for industrial applications because of its strength and longevity. It has a long lifespan and relatively low maintenance which contributes to cost savings over time.


Due to its square shape, square structural tubing provides stability, suitable for applications where rigidity and support are crucial.

Ease of Fabrication

Square tubing can be easily cut, welded, and manipulated to allow for the creation of custom shapes and configurations to meet specific industrial standards. Square tubing can be fabricated into various shapes like structural framing, supports, and other components.

Corrosion Resistance 

Square structural tubing is corrosion-resistant, moisture-resistant, and can withstand extreme temperatures. This ensures structural soundness in many industrial applications.


Recyclability is important to maintain the sustainability of stainless steel materials, and square structural tubing is highly recyclable. This reduces its environmental impact. 

Customized Cut Lengths Available. Please Specify Cut Length During Quote Process.

Square Structural Tubing

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