Standard Speciﬁcation for Pearlitic Malleable Iron1
This standard is issued beneath the ﬁxed designation a 220/a 220m; the number straight away following the designation indicates the year of authentic adoption or, in the case of revision, the yr of closing revision. a variety of in parentheses indicates the yr of ultimate reapproval. a superscript epsilon (e) suggests an article exchange for the reason that last revision or reapproval.
This general has been authorized to be used through corporations of the branch of protection
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