ISO 8495:2013规定了一种在管上进行环形膨胀试验的方法，该方法通过使用锥形心轴膨胀试样，直到发生断裂，从而揭示管壁表面和内部的缺陷。它也可用于评估管子承受塑性变形的能力。 环形膨胀试验适用于外径为18 mm至150 mm（含150 mm）、壁厚为2 mm至16 mm（含16 mm）的管道。

ISO 8495:2013 specifies a method for a ring-expanding test on tubes, that is used to reveal defects both on the surfaces and within the tube wall by expanding the test piece using a conical mandrel until fracture occurs. It may be also used to assess the ability of tubes to undergo plastic deformation. The ring-expanding test is applicable to tubes having an outside diameter from 18 mm up to and including 150 mm and a wall thickness from 2 mm up to and including 16 mm.