There are two options: a) the difference between the maximum and mean diameter divided by the mean diameter, and b) the difference of the mean and minimum divided by the mean, at any one cross section of a pipe, generally expressed as a percentage.
The difference between the largest and smallest outside diameter on a cross-section.
Deviation from a circular periphery, usually expressed as the total difference found at any one cross section between the individual maximum and minimum diameters, which usually occur at or about 90 degrees to each other. Since ovality is the difference between extreme diameters, it is not expressed as plus or minus.
The difference between the maximum and minimum diameters of a tubular section.
A condition in which a circular pipe forms into an ellipse, usually as the result of external forces.
The attribute of an optical fiber, the cross section of the core or cladding of which deviates from a perfect circle. In an optical fiber, the degree of deviation, from perfect circularity, of the cross section of the core or cladding.
The distortion of the cross section of pipe or tube from its normal (round) shape usually expressed as a percentage of the difference between major and minor axis (Pipe Fabrication Institute (PFI) Standard is 8%).
The difference between the maximum and minimum diameters of any one section of tubing.
In telecommunications and fiber optics, ovality or noncircularity is an attribute of an optical fiber. In particular, it is the degree of deviation from perfect circularity of the cross section of the core or cladding.