ANSI/ASME B16.1-1998
Cast Iron Pipe Flanges and Flanged Fittings, Class 25, 125, 250, and 800

Standard No.

ANSI/ASME B16.1-1998

Release Date

1998

Published By

American National Standards Institute （ANSI)

Status

Withdraw

Replace By

ANSI/ASME B16.1-2010

Latest

ANSI/ASME B16.1-2020

Scope

Covers: (a) pressure-temperature ratings; (b) sizes and methods of designating openings of reducing fittings; (c) marking; (d) minimum requirements for materials; (e) dimensions and tolerances; (f) bolt, nut, and gasket dimensions; and (g) tests.

ANSI/ASME B16.1-1998 history

• 2020 ANSI/ASME B16.1-2020 Gray Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250
• 2015 ANSI/ASME B16.1-2015 Gray Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250
• 2010 ANSI/ASME B16.1-2010 Gray Iron Pipe Flanges and Flanged Fittings
• 1998 ANSI/ASME B16.1-1998 Cast Iron Pipe Flanges and Flanged Fittings, Class 25, 125, 250, and 800