Home / Standards / GB/T 30839.21-2015 GB/T 30839.21-2015 Active Energy consumption grading for industrial electroheat installations—Part 21:Ladle refining furnace 工业电热装置能耗分等 第21部分:钢包精炼炉 Standard Type GBT ICS 25.180.10 CCS K61 Status 现行 Issue Date 2015-09-11 Implementation 2016-04-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A