Types of Pipe fitting standards:
Some widely used pipe fitting standards are as follows:
I. ANSI: The American National Standards Institute
ANSI is a private, non-profit organization. Its main function is to administer and coordinate the U.S. voluntary standardization and conformity assessment system. It provides a forum for development of American national standards. ANSI assigns "schedule numbers". These numbers classify wall thicknesses for different pressure uses.
II. ASME: American Society for Mechanical Engineers
This is one of the reputed organizations in the world developing codes and standards. The schedule number for pipe fitting starts from ASME/ANSI B16. The various classifications of ASME/ANSI B16 standards for different pipe fittings are as follows:
ASME/ANSI B16.1 - 1998 - Cast Iron Pipe Flanges and Flanged Fittings
ASME/ANSI B16.3 - 1998 - Malleable Iron Threaded Fittings
ASME/ANSI B16.4 - 1998 - Cast Iron Threaded Fittings
ASME/ANSI B16.5 - 1996 - Pipe Flanges and Flanged Fittings
ASME/ANSI B16.11 - 2001 - Forged Steel Fittings, Socket-Welding and Threaded
ASME/ANSI B16.14 - 1991 - Ferrous Pipe Plugs, Bushings and Locknuts with Pipe Threads
ASME/ANSI B16.15 - 1985 (R1994) - Cast Bronze Threaded Fittings
ASME/ANSI B16.25 - 1997 ¨C Butt welding Ends
ASME/ANSI B16.36 - 1996 - Orifice Flanges etc.
