Standard Speciﬁcation for Seamless Copper Tube, Bright Annealed 1
This trendy is issued under the ﬁxed designation b sixty eight; the quantity right now following the designation indicates the 12 months of authentic adoption or, within the case of revision, the yr of ultimate revision. a range of in parentheses shows the yr of closing reapproval. a superscript epsilon (e) suggests a piece of writing change since the closing revision or reapproval.
This widespread has been approved to be used by corporations of the department of protection.
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