Home / Standards / GB/T 44819-2024 GB/T 44819-2024 Active Method for determining the spontaneous combustion indicator gas and critical value in coal seams 煤层自然发火标志气体及临界值确定方法 Standard Type GBT ICS 13.100 CCS D09 Status 现行 Issue Date 2024-10-26 Implementation 2025-05-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A