STI 21597 MechHeader App scaled Product Overview & Benefits - Mechanical Tubing

mechanical tubing


Mechanical tubing, producing according to ASTM A513, performs functions that are broad and far reaching making it the most versatile of all tubing specifications. Mechanical tubing is produced from flat steel progressively rolled into a finished size and shape.  An electric resistance weld creates the seam.  The outside weld bead is removed producing a finished product with a smooth surface. This tubing is classified as “as-welded”.  Sink drawn and drawn over mandrel tubing is then drawn through a die to achieve other attributes.

STI MechTube ProdPg Desat5 Product Overview & Benefits - Mechanical Tubing

Types of Products

STI MechTube ProdOverview Full Gen1 Product Overview & Benefits - Mechanical Tubing


As-welded mechanical tube is mechanical tubing that does not undergo additional processing at the mill.

STI 21597 DoM ProdOverview Full3 Product Overview & Benefits - Mechanical Tubing

Drawn Over Mandrel

Drawn Over Mandrel (DOM) starts with an as-welded tube. The tube is then drawn through one or more dies and over mandrels to achie…

STI 21597 Sink ProdOverview Full4 Product Overview & Benefits - Mechanical Tubing

Sink Drawn

Sink drawn tube starts with an as-welded steel tube which is drawn or pulled through a die that reduces the outside and inside dia…

Benefits of Mechanical Tubing

STI 21597 Mech BenefitsPage taller Product Overview & Benefits - Mechanical Tubing


Precise dimensions and tight corners mean customers receive the exact uniformity they are looking for.

Less Processing

The close dimensional tolerances of mechanical tubing allow its use with minimal downstream processing.

Variety of Shapes

Mechanical tubing is produced in round, rectangular, oval, trapezoidal, tear-drop and other specialty shapes in a variety of surface finishes.


Applications from bicycle frames and lawn mower handles to high strength industrial applications demonstrate the versatility of mechanical tubing.  As the end uses are endless, so are the assortment of sizes, shapes and gauges to which this product can be rolled. Here are just some of the different applications:

  • Conveyor systems
  • Industrial equipment
  • Agricultural equipment components
  • Automotive parts
  • Exercise equipment
  • Recreational vehicle parts / ROPS
  • Solar
  • Playgrounds
  • Trailers / heavy truck components / hitch receivers
  • Fluid power
  • Mining
  • Heavy construction equipment
  • Racking
  • Fencing
  • Construction
  • Furniture
  • STI MechTube ProdOverview Full Gen3 Product Overview & Benefits - Mechanical Tubing

    Mechanical Tubing Producers

    The membership of the Steel Tube Institute represents the majority of North America’s producers.

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