Home / Standards / GB/T 20801.5-2025 GB/T 20801.5-2025 Active Pressure piping code—Part 5:Hydrogen piping and pipelines 压力管道规范 第5部分:氢用管道 Standard Type GBT ICS 23.040 CCS J74 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 国家标准委 Drafting Unit N/A