Home / Standards / GB/T 5448-2014 GB/T 5448-2014 Active Determination of the crucible swelling number of bituminous coal—Electrical heating method 烟煤坩埚膨胀序数的测定 电加热法 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