Standard Practice for
Ultrasonic Examination of Heavy Steel Forgings1
This fashionable is issued below the fixed designation a 388/a 388m; the wide variety at once following the designation shows the 12 months
of authentic adoption or, within the case of revision, the 12 months of last revision. quite a number in parentheses indicates the year of closing reapproval.
a superscript epsilon (e) shows an article alternate because the closing revision or reapproval
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