Standard Specification for Nickel Seamless Pipe and Tube1
This wellknown is issued underneath the fixed designation b 161; the wide variety right away following the designation shows the 12 months of authentic adoption or, in the case of revision, the 12 months of last revision. various in parentheses suggests the yr of final reapproval. a superscript epsilon (e) shows an article trade since the remaining revision or reapproval
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