Help.. Where do I go for bolt details above 24"??. ASME 16.5 has only upto 24". I need bolt lengths for 30" class 600 flanged valve(ball valve) connections.

Go to ASME B16.47 or MSS SP-44.  B16.47 has two series, series A or B.  Series A is the same as MSS SP-44.  These standards cover 26 NPS through 60 NPS.

MORE NEWS