CFR /  Title 46  /  Part 154  /  Sec. 154.625 Design temperature below 0 [deg]C (32 [deg]F) and

Pipes, tubes, forgings, castings, bolting, and nuts for cargo and process piping for a design temperature below 0 [deg]C (32 [deg]F) and down to -165 [deg]C (-265 [deg]F) must meet Sec. 56.50-105 of this chapter.