Home / Standards / GB/T 11578-2025 GB/T 11578-2025 Active The landing boom for S.t Lawrence seaway 圣劳伦斯航道登岸吊杆 Standard Type GBT ICS 47.020.50 CCS U24 Status 现行 Issue Date 2025-04-25 Implementation 2025-08-01 Responsible Dept 国家标准委 Drafting Unit N/A