Standard Specification for
Carbon Steel Forgings, for General-Purpose Piping1
This standard is issued under the fixed designation A 181/A 181M; 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 181/A 181M – 01 pdf free
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click here to download Astm A 179/A 179M – 90a (Reapproved 2001) pdf free download