Home / Standards / GB/T 46599-2025 GB/T 46599-2025 Active Steel pipe for gaseous hydrogen storage and transportation pipeline 氢气储输管道用钢管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A