Home / Standards / GB/T 40503-2021 GB/T 40503-2021 Active Measuring methods of secondary coal slime content in coal preparation plant 选煤厂次生煤泥量的测定方法 Standard Type GBT ICS 73.040 CCS D21 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A