Thank you for your detailed response, much appreciated.
In my cases I tend to find using the inside diameter results in a smaller tf value result. For some cases, using outside diameter results in a tf > d/4, where if I change to use the inside diameter formula it falls below this value.
We...
When comparing AS4041 and ASME B31.3, I noticed a difference between the way they handle minimum wall thickness calculations for bent pipes.
Compare the formulas in the following sections;
AS4041 Cl. 3.15.2
ASME B31.3 Cl. 304.2
AS4041 suggests a larger wall thickness is required in the...