Home / Standards / GB/T 12163-1990 GB/T 12163-1990 Active Lead shielding units for 50 and 100 mm thick walls used for protection against ionizing radiation 用于防护电离辐射的50 mm和100 mm厚墙的铅屏蔽构件 Standard Type GBT ICS 27.120 CCS F72 Status 现行 Issue Date 1990-01-12 Implementation 1990-08-01 Responsible Dept 国家标准委 Drafting Unit N/A