Home / Standards / GB/T 40404-2021 GB/T 40404-2021 Active Slag material—Measurement of melting temperature—High temperature metallographic method 渣类材料 熔化温度的测定 高温金相法 Standard Type GBT ICS 77.040.99 CCS H24 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A