Ovality is simply how “out of round” a round material is. The new ovality calculator determines the % of ovality (i.e. the % the material is out of round).
All round material has a certain amount of ovality (even as straight material) nothing is PERFECTLY round, mills will produce material to an ovality tolerance. When bending round material, the material will slightly oval. The material theoretic OD, the wall thickness, the radius the material is bent to and the bending method (i.e. how is the material bent) will all impact the final ovality of bent round material. Customers that are using pipe for pressure retaining systems, heat exchangers, industrial applications, boiler tubes, etc. are all concerned about the ovality of round material after bending.