Home / Standards / GB/T 3091 GB/T 3091 Active Welded steel pipes for low pressure fluid delivery 低压流体输送用焊接钢管 Standard Type GBT ICS 77.140.75 CCS H 48 Status 现行 Issue Date 2025-03-28 Implementation 2025-10-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会