The purpose of this amendment to Part 192 of Title 49 of the Code of Federal Regulations Is to provide greater flexibility in qualifying pipe. A change to § 192.55 permits the use of steel pipe manufactured before November 12, 1970, in compliance ith an unlisted edition of a specification included in section I of Appendix B, where stated requirements are met. A change to § 192.65 permits the use of certain pipe transported by railroad before November 12, 1970, not In accordance with API RP5Li. In addition, changes to Appendices A and B add certain 1971 editions and supplements to the editions to the lists of API documents and specifications.