Pages: 8 Published: Jan 1972
This Standard is issued under the fixed designation D 2270: the number immediately following the designation indicates the year of original adoption or. in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. This is also a standard of the Institute of Petroleum issued under the fixed designation IP 226. The final number indicates the year of last revision.
Paper ID: STP34671S