Historical
ANSI/ASME B16.14-1991
Ferrous Pipe Plugs, Bushings, and Locknuts with Pipe Threads
This Standard for Ferrous Pipe Plugs, Bushings, and Locknuts with Pipe Threads covers: (a) pressure-temperature ratings; (b) size; (c) marking; (d) materials; (e) dimensions and tolerances; (f) threading; and (g) pattern taper.
American Society of Mechanical Engineers [asme]