Can someone advise me where in the ASME code can I find information to design a flange for a pressure vessel 30" and 48" diam for a design pressure of 100 psi
ASME B 16.47 series A (MSS SP-44) flanges, 150 to 900 lbs, 26" to 60" according to gasket standard ASME B 16.20 (API 601)
ASME B 16.47 series B (API 605) flanges, 150 to 900 lbs, 26" to 60" according to gasket standard ASME B 16.20 (API 601)
BS 1560 and ASME/ANSI B 16.5 flanges, 150 to 2500 lbs, 1/2" to 24" according to gasket standard BS 3381
DIN flange - all types and sizes
Try VIII-1 Appendix 2 "Rules for bolted flange connections with ring type gaskets." I believe that will provide the guidance you are looking for.