Home / Standards / GB/T 4797.6-2013 GB/T 4797.6-2013 Active Classification of environmental conditions - Environmental conditions appearing in nature - Dust, sand, salt mist 环境条件分类 自然环境条件 尘、沙、盐雾 Standard Type GBT ICS 19.020 CCS A21 Status 现行 Issue Date 2013-11-12 Implementation 2014-03-07 Responsible Dept 国家标准委 Drafting Unit N/A