Home / Standards / GB/T 5450-2014 GB/T 5450-2014 Active Audibert-Arnu dilatometer test of bituminous coal 烟煤奥阿膨胀计试验 Standard Type GBT ICS 73.040 CCS D21 Status 现行 Issue Date 2014-03-27 Implementation 2014-10-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A