Rule 402. In addition to the requirements in 49 CFR 192.55, which is adopted by reference in R 460.20606, metallic materials for pipe and other components used to transport sour gas must meet the requirements in the National Association of Corrosion Engineers international standard NACE MR0175/ISO 15156, which are adopted by reference in R 460.20605.
Mich. Admin. Code R. 460.20402