ANSI B16 or ASME B16 or both?
Many pro?fessionals, suppliers and manufacturers often talk about ANSI flanges, ANSI fittings etc. Just do a search on any Standards providers website for ANSI B16.5, ANSI B16.9, ANSI B16.10 etc.You will not find that standards, because they do not exist.
Many years ago there was, as an example, a ANSI B16.5 standard. In 1988 it became ANSI/ASME B16.5 and in 1996 it became ASME B16.5. However, there are still many suppliers and manufacturers that refer to ANSI or ANSI/ASME and thats nots correct. There are also other standards which have changed to ASME and are still being miss quoted in documents. Below you will find some examples, of the history, of particular ASME standards.
ASME B16.5Pipe flanges and flanged Fittings NPS 1/2 through NPS 24 Metric/Inch
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