Who can help me out?
My client is asking for: RTJ gasket, R31, 3 inch, API 3000#.
Acc. to API 6B the R31 is indeed suitable for 3000#
But my suppliers come up with R31 ASME-ANSI B16.5 in 900#
If I check the tables, both pressure classes are correct, but 900# or 3000# is a hell of a big...