Home / Standards / GB/T 19492-2020 GB/T 19492-2020 Active Classifications for petroleum resources and reserves 油气矿产资源储量分类 Standard Type GBT ICS 75.010 CCS E20 Status 现行 Issue Date 2020-03-31 Implementation 2020-05-01 Responsible Dept 自然资源部(国土) Drafting Unit N/A