ASTM A519 seamless tubing is commonly used in applications requiring machining, heat treating, close tolerances, smooth finishes, and/or definite physical properties. ASTM A519 covers several grades of carbon and alloy steel seamless mechanical tubing. The standard is also acceptable in the manufacture of piping. It is manufactured by hot working and then cold finishing the steel into round tube.

High precision uses are bearings, hydraulic cylinders, close tolerance applications, oil & gas transmission.


  • EN10204 3.1.B
  • Uniform Lengths
  • Bright finish
  • .25” – 4.00” outside diameter
  • .035” – .5” wall thicknesses

Technical Specifications

  • ASTM A519
  • DIN 2391
  • Grades 1020, 1026, ST52.3