Home / Standards / GB/T 30839.31-2014 GB/T 30839.31-2014 Active Energy consumption grading for industrial electroheat installations―Part 31:Medium frequency coreless induction furnaces 工业电热装置能耗分等 第31部分:中频无心感应炉 Standard Type GBT ICS 25.180.10 CCS K61 Status 现行 Issue Date 2014-12-05 Implementation 2015-04-16 Responsible Dept 中国电器工业协会 Drafting Unit N/A