View all text of Subpart D [§ 179.200 - § 179.221-1]
§ 179.200-10 - 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) Welding is not permitted on or to ductile iron or malleable iron fittings.