ANSI Z32.2.3 : 1949
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
PIPE FITTINGS, VALVES, AND PIPING, GRAPHIC SYMBOLS FOR,
15-03-2022
12-01-2013
Standard symbology for valves, piping and allied items, for the use of architects, engineers, etc.
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