Standard Practice for
Ultrasonic Examination of Turbine-Generator Steel Retaining
This standard is issued under the fixed designation A 531/A 531M; 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 531/A 531M – 91 (Reapproved 2001) pdf free
Click here to download Astm A 530/A 530M – 04 Pdf Free Download