Standard Specification for
Piping Fittings of Wrought Carbon Steel and Alloy Steel for
Low-Temperature Service1
This standard is issued under the fixed designation A 420/A 420M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
click below to download Astm A 420/A 420M – 04 pdf free
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click here to download Astm A 418 – 99 (Reapproved 2003) pdf free download