Standard Speciﬁcation for Seamless Nickel and Nickel Alloy Condenser and HeatExchanger Tubes1
This wellknown is issued under the ﬁxed designation b 163; the number without delay following the designation shows the yr of original adoption or, in the case of revision, the year of final revision. a variety of in parentheses shows the yr of closing reapproval. a superscript epsilon (e) suggests an article alternate because the remaining revision or reapproval.
This preferred has been authorized for use by using companies of the branch of defense.
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