{"operation":"document","citation":"49 CFR 179.200-10","title":"-10 Welding.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(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.\n\n(b) Welding is not permitted on or to ductile iron or malleable iron fittin","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-179-200-10.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-179-200-10.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-179-200-10","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-179.200-10","body":"(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.\n\n(b) Welding is not permitted on or to ductile iron or malleable iron fittings.\n\n[29 FR 18995, Dec. 29, 1964. Redesignated at 32 FR 5606, Apr. 5, 1967, and amended by Amdt. 179-10, 36 FR 21350, Nov. 6, 1971; 68 FR 75761, Dec. 31, 2003]","truncated":false,"body_characters":459}