BPVC Section II Part C are designated by SFA numbers, derived from AWS specifications and are intended for use on welding rods, electrodes & filler metals.
ASME BPVC.II.C-2023 history
2023ASME BPVC.II.C-2023 BPVC Section II-Materials-Part C-Specifications for Welding Rods, Electrodes, and Filler Metals