StacksVerified U.S. regulatory reference

49 CFR §179.100-9

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)All joints shall be fusion-welded in compliance with the requirements of AAR Specifications for Tank Cars, appendix W (IBR, see § 171.7 of this subchapter). Welding procedures, welders and fabricators shall be approved.
  2. (b)[Reserved]