Gray Iron Threaded Fittings - Classes 125 and 250
|Publication Date:||1 January 1998|
This Standard for gray iron threaded fittings, Classes 125 and 250, covers:
(b) size and method of designating openings of reducing fittings,
(e) dimensions and tolerances,
(f) threading, and
Standards and specifications adopted by reference in this Standard are shown in Mandatory Annex I.
Requirements relating to the product manufacturers' Quality System Programs are described in Nonmandatory Annex A.