flange marking

[marsich]

Does ASME require any marking on heat exchanger "main flanges" (head / shell flanges)?
I mean, shall we mark only the heat number or shall we mark material and dimension ?
We usually mark also our stamp, SN and item.
Thank you.

 

[codeeng]

If these are Appendix 2 flanges then no stamping would be required regarding material or dimensioning.

 

[marsich]

Yes, appendix 2.
Thanks