Home / Standards / GB/T 30840-2014 GB/T 30840-2014 Active Basic specifications for gas-fired bell furnace for annealing 燃气罩式退火炉基本技术条件 Standard Type GBT ICS 25.180.10 CCS K61 Status 现行 Issue Date 2014-05-06 Implementation 2015-01-22 Responsible Dept 中国电器工业协会 Drafting Unit N/A