Home / Standards / GB/T 14409-1993 GB/T 14409-1993 Active Aerospace--Pipelines--Identification 航空航天管路识别标志 Standard Type GBT ICS 49.080 CCS V21 Status 现行 Issue Date 1993-04-20 Implementation 1994-01-01 Responsible Dept 国家标准委 Drafting Unit N/A