Stailess Steel Pipe Permissible Variation in Outside Diameter
1 Variations in outside diameter, unless otherwise agreed upon, shall not exceed the limits prescribed in Table 1. The tolerances on outside diameter include ovality except as provided for in 11.2 and 11.2.1. (See Note 2.)
2 For thin-wall pipe, defined as pipe having a wall thickness of 3 % or less of the outside diameter, the diameter tolerance of Table 1 is applicable only to the mean of the extreme (maxi and mini) outside diameter readings in any one cross-section.
2.1 For thin-wall pipe the difference in extreme outside readings (ovality) in any one cross-section shall not exceed 1.5 % of the specified outside diameter.
NOTE 2—Thin-wall pipe usually develops significant ovality (out-ofroundness) during final annealing, straightening, or both. The diameter tolerances of Table 1 are usually not sufficient to provide for additional ovality expected in thin-wall pipe.
