Standard Speciﬁcation for Electric Fusion Welded Nickel and Nickel Alloy Pipe1
This standard is issued underneath the ﬁxed designation b 474; the variety immediately following the designation indicates the yr of unique adoption or, within the case of revision, the yr of closing revision. A number in parentheses suggests the yr of last reapproval. A superscript epsilon (e) indicates an article exchange because the remaining revision or reapproval.
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