structural steel shapes

Steel Tube

Square, rectangular, and round steel tubing can be manufactured by roll forming steel sheets into a cylinder shape and then welding the seam where the two edges meet. This roll forming process can be done through hot rolling or cold rolling, although cold rolling results in tighter tolerances and smoother finishes. The different shapes of steel tubing have a wide array of applications and uses, from car suspension to scaffolding to refrigerator tubing.

Service Steel Warehouse stocks the complete line of Hollow Structural Shapes (HSS) in standard sizes, as well as difficult-to-find squares, rectangles, and rounds. We keep larger steel tube shapes available in lengths of 28 feet, 30’s, 32’s, 34’s, 36’s, 40’s, 48’s, and 52’s, as well as 60’ lengths in stock for heavier and larger shapes. View more information about the types of steel tubing for sale below or request a quote now.

stack of steel tube
bundles of round steel tubing

We stock HSS Round ⅛” NPS through 16” in a variety of gauges with larger Jumbo sizes (up to 48″) as well. View Round Pipe Sizing Chart.

More Info on Round Tubing & Pipe

bundle of square steel tubing

We offer squares ½” through 12” as well as larger Jumbo sizes (up to 22″) in a variety of gauges. View Square Tube Sizing Chart.

More Info on Square Tubing

stack of rectangular steel tubing

We offer rectangular tubing 1 ½” x ¾” through 16″ x 8″ as well as larger Jumbo sizes (up to 34″ x 10″) in a variety of gauges. View Rectangular Tube Sizing Chart.

More Info on Rectangular Tubing

Steel Tubing FAQs

Used primarily for structural purposes, steel tubing is commonly used for construction scaffolding, railings, automotive applications, pipelines, and more.

Steel tubes are commonly categorized as welded and seamless, which identifies how they were manufactured. Welded tubes are made by rolling steel strips, sheets, or plates into a tube shape and then welded along where the edges meet. Seamless tubes take a cylindrical billet of steel and use a mandrel rod to extrude the center and create a hollow tube. Service Steel primarily stocks welded steel tubing.

Structural tubing can have a wide range of prices based on size, rendered services, market conditions, and other factors.

For more detailed pricing please contact your sales representative. Request a quote.

Additional Steel Products

Service Steel Warehouse, which has been serving its customers since 1965, offers premium-quality carbon steel products throughout the U.S.


Rounds, squares, flats, rebar, and more

Structural Shapes

Channels and beams

Coils, Plates, and Grating

Coils, mill plates, floor plates, bar grating, and more


Steel sheet metal