Square Tube

Southside Steel stocks an extensive list of structural square and rectangular tube at a variety of sizes and lengths.  All our steel square/rectangular tube is available in stock lengths or cut to length. Email us about our fabricated steel columns with welded base plate, cap plates and gusset plates, drilled per spec, coped / mitred, and primed; perfect for your next structural project.

Steel Tube Specs: ASTM A-500, A513 Grade B; Structural Grade.

Available Finishes: Stainless, Aluminum, Galvanized and Hot Rolled Steel

  • Uses: Residential and commercial structural columns, handrails/guardrails, general fabrication, dumpster gate framing, etc.
  • Know the numbers: Square tube and rectangular tube is available in thickness as small as 16ga. and progressively gets larger to as thick as 1/2”.  The higher the gauge, the thinner the material.
  • NOTE: All our structural steel tube is a welded structural grade tubing, the most commonly used square/rectanglur tube in the steel industry.

Available Stock Sizes: 24ft and 48ft. lengths or custom cut to any size.