PRODUCTS
TUBE AND PIPE
Structural tubing is a hollow steel section - square, rectangular, or round - commonly used in construction and fabrication for its strength, weldability, and clean finish.
Strong, weldable steel tubing
for structural and load-bearing applications.
Structural tubing, also known as hollow structural sections (HSS), is a strong, versatile steel product used in construction and fabrication. It features a hollow cross-section—typically square, rectangular, or round—and offers an excellent strength-to-weight ratio, weldability, and uniformity, making it ideal for load-bearing applications such as building frames, supports, trailers, and machinery.
Structural Tubing has a high strength-to-weight ratio and is easily welded, formed, punched, and drilled. It can offer a lightweight alternative to solid steel products, such as I-beams and wide-flange beams. Triad Metals offers a wide range of sizes, lengths, and specifications for Structural Tubing.
Common Grades: ASTM A500 GRB and GRC, A513
Structural tube and pipe is valued for its high strength-to-weight ratio, affordability, and versatility. It’s easy to weld, drill, punch, and form, making it ideal for a wide range of construction and fabrication uses. Its hollow form can also conceal wiring, piping, or moving parts, and it offers a lightweight alternative to solid steel shapes like I-beams or wide-flange beams.
At Triad Metals International, we offer structural tubing in a variety of sizes, lengths, and specifications to meet your project needs.
ASTM A500 Specification
Structural Tubing is a hollow section most commonly constructed from hot rolled metal coils. The coils are slit to the proper width for the section being manufactured and then formed into the final shape needed. Once the size is formed and the seams are welded together the tube is cut to the desired length to make a single piece of tubing. Structural tubing is offered in round, rectangular and square shapes.
Structural tubing is relatively low in cost, has a high strength-to-weight ratio and is easily welded, formed, punched, and drilled. Its hollow shape protects and conceals wires, pipes, moving parts and it can be left exposed. Additionally it can offer a lightweight alternative to solid steel products such as I-Beams and Wide Flange.  Triad Metals International offers many different sizes, lengths and specifications for Structural Tubing.
ASTM – 500 – Standard specification for cold-formed welded and seamless carbon steel structural tubing in rounds and shapes . This specification covers cold-formed steel round, square, rectangular, or special shape structural tubing for welded, riveted, or bolted construction of bridges and buildings, and for general structural purposes. Four grades are produced each having a different chemistry and tensile requirement.
Grades B and C, being the most common stock available, can be subjected to most of the usual fabricating operations. Ductility is good. Bends well, flattens, cuts, punches, flares, flanges and welds easily.
We stock tubing that meets the ASTM A500 standard, which covers cold-formed welded and seamless carbon steel tubing for structural applications. This includes round, square, rectangular, and custom shapes used in construction, bridges, and general structural work.
Grades B and C are the most common and are ideal for most fabrication needs.
They offer excellent ductility and can be bent, cut, flared, flanged, punched, and welded with ease.