Home / Standards / GB/T 6257-2015 GB/T 6257-2015 Active Blank detail specification for transmitting tubes 发射管空白详细规范 Standard Type GBT ICS 31.100 CCS L36 Status 现行 Issue Date 2015-09-11 Implementation 2016-05-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A