Standard Specification for Steam or Valve Bronze Castings1
This popular is issued underneath the fixed designation b sixty one; the range at once following the designation suggests the 12 months of authentic adoption or, in the case of revision, the year of closing revision. more than a few in parentheses shows the year of remaining reapproval. a superscript epsilon (e) shows a piece of writing trade because the last revision or reapproval.
This general has been authorised for use by means of agencies of the department of defense.
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