Standard Speciﬁcation for Ultrasonic Examination of Forged Crankshafts1
This popular is issued underneath the ﬁxed designation a 503/a 503m; the quantity right away following the designation suggests the year of authentic adoption or, within the case of revision, the yr of final revision. More than a few in parentheses shows the yr of closing reapproval. A superscript epsilon (e) indicates an article change because of the final revision or reapproval.
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