Home / Standards / GB/T 40549-2021 GB/T 40549-2021 Active Determination of bulk density of coke in a small container 焦炭堆积密度小容器测定方法 Standard Type GBT ICS 75.160.10 CCS H32 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 国家标准委 Drafting Unit N/A