View all text of Subpart C [§ 179.100 - § 179.103-5]
§ 179.100-9 - Welding.
(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.
(b) [Reserved]