Can anyone clarify exactly when grade A212 Grade B was replaced by SA-515-70 (in what edition of which publication)?
We are modifying an old pressure vessel and we need to submit documents to satisfy our client that the materials are indeed equivalent.
I'd like to begin by apologizing for the length of this reply, but it all seems relevant...
The following is an excerpt from a recent edition of The Pressure News (published by ABSA at www.absa.com)
"In general, flange connections consist of mating flanges, gaskets and the bolting...
