Is Gb/T 9711 Applicable To Pure Hydrogen Transmission Pipeline?

Applicable. GB/T 9711-2023 added technical requirements for pure hydrogen transmission pipeline (Appendix A), and put forward stricter requirements for carbon control and hydrogen embrittlement control for materials, such as carbon content ≤ 0.07%, Pcm carbon equivalent ≤ 0.15. In addition, the standard provides supplementary requirements for special environment pipes such as acid service (Appendix H) and marine service (Appendix J).