Home / Standards / GB/T 14440-1993 GB/T 14440-1993 Active Classification of works in cold environment 低温作业分级 Standard Type GBT ICS 13.100 CCS C71 Status 现行 Issue Date 1993-06-10 Implementation 1994-01-01 Responsible Dept 国家卫生健康委 Drafting Unit N/A