Whether you are looking for square aluminum tubing, stainless steel square tubing or even square steel tubing, we have it all. We carry many stock lengths, but can also cut the metal to fit your exact specifications.

Some examples of square tubing applications are building construction, railings, and sign posts. They are measured by their outside dimensions and their wall thickness.

Square tube is available in the following metal types:

• Aluminum
• Mild Steel
• Stainless Steel

Looking for something light weight and resistant to corrosion? Aluminum square tubing is the superior choice. This extruded aluminum is commonly found in fabrication projects such as support columns, gates, handrails, etc. You can identify an aluminum square tube by its square corners, inside and out, with no visible weld seam.

With its close tolerances, good finish and dense structure, square steel tube is favored for many mechanical applications across a wide range of industries such as construction, automotive and agricultural. They offer a high strength-to-weight ratio at a relatively low cost. No matter your use case, steel tubes are easily welded, drilled, formed or punched.

Stainless steel tubing is ideal for any structural application where greater strength and corrosion is necessary. It can also be used in fabrication projects in chemical, acidic, fresh and salt water environments.

There are three main methods for manufacturing tubing:

1. Seamless (can be produced through extrusion)
2. As-welded (or electric resistant welded [ERW])
3. Draw-over-mandrel (DOM)

Which process is used depends on the metal type. Aluminum tubing is either extruded or cold drawn.

Stainless tubing can be welded — roll-forming strips of stainless steel into a tube shape and then welded (same as hot rolled welded) — or seamless (through the extrusion process).