2:1 Elliptical Flanged and Dished Tank Head

A 2:1 elliptical tank head is fabricated to have a certain shape instead of a particular dish radius or knuckle radius. The dish radius is approximately 90% of the diameter and the knuckle radius is approximately 17% of the diameter. 2:1 elliptical flanged and dished heads are ASME compliant.

Defining Features

  • Inspected for compliance by an ASME Authorized Inspector
  • Higher volume than other head shapes at the same diameter
  • Useful for moderate to high pressure applications


  • Polishing for sanitary applications and aesthetic appeal
  • Assembly with heat transfer can be provided
  • MTRs and other quality documents available

Specifications and Sizing

Diameter:  20" - 144"
Dish Radius:  Approximately 90% of outside diameter
Knuckle Radius:  Approximately 17% of outside diameter
Thickness:  12 gauge - 1"


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We understand the demands of tank fabrication, to be profitable - efficiency and repeatability are crucial. We are proud to partner with tank fabrication companies all around North America to help continue the legacy of quality stainless steel manufacturing in the industry.