Home / Standards / GB/T 6258-1986 GB/T 6258-1986 Active Blank detail specification for disk seal power tubes 盘封电子管空白详细规范 Standard Type GBT ICS 31.100 CCS L38 Status 现行 Issue Date 1986-04-14 Implementation 1987-04-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A