Standard Specification for
Piping Fittings of Wrought Carbon Steel and Alloy Steel for
This widespread is issued under the constant designation a 420/a 420m; the wide variety right now following the designation suggests the yr
of original adoption or, in the case of revision, the yr of final revision. a variety of in parentheses suggests the year of remaining reapproval.
a superscript epsilon (e) indicates a piece of writing exchange because the last revision or reapproval.
click below to download Astm A 420M – 04 pdf free
click here to download Astm A 418 – 99 (Reapproved 2003) pdf free