ASME B16.5-1996

Pipe Flanges & Flanged Fittings : NPS 1/2 Through NPS 24 (Includes 1998 Addenda)
standard by ASME International, 10/26/1998

ASME BPVC.XI-2017

2017 ASME Boiler and Pressure Vessel Code, Section XI: Rules for Inservice Inspection of Nuclear Power Plant Components
standard by ASME International, 07/01/2017