Home / Standards / GB/T 13225-1991 GB/T 13225-1991 Active Determination of delay time of industrial detonator 工业雷管延期时间测定方法 Standard Type GBT ICS 71.100.30 CCS G89 Status 现行 Issue Date 1991-10-30 Implementation 1992-07-01 Responsible Dept 工业和信息化部 Drafting Unit N/A