[MW:10880] Comparison of Large Dia Flanges (B16.47 series A & B) in Refinery services

Hi,

I have to use 30", 42", 48" pipes in Cude Oil, Naphtha, HSD and CRWS services.
What is the criteria between the series A & B for ASME B16.47. Regarding no. of bolts, enonomy, availability etc.
If anyone to know this please.

Regards

Krishnakumar
Fact Engineering & Design Organisation (FEDO)
Cochin, India