ASME: Thickness calculation of ovale/obround tube?

[wassa]

I have the following problem:
The circular tubes are formed with rolls to have an oval or obround form .. The final form is not circular but obround. I want to calculate the thickness of these tubes according to ASME code. How?

[wassa]

no one has the answer?

[chunlin]

Go Appdix 13 of ASME VIII div 1 to find the answer.

[M5416]

Formally ASME code didn't have oval or obround shell thickness formula for internal pressure, but you can use Appendix 13 to approach.