U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
(a) Filler metal. All filler metal, including consumable insert material, must comply with the requirements of Section IX of the ASME BPVC (incorporated by reference; see § 56.01-2) and § 57.02-5 of this subchapter.
(b) Backing rings. Backing rings must comply with section 127.2.2. of ASME B31.1 (incorporated by reference; see § 56.01-2).
