Home / Standards / GB 38449-2019 GB 38449-2019 Active Minimum allowable values of energy efficiency and energy efficiency grade of regenerative rolling reheating furnace 蓄热式轧钢加热炉能效限定值及能效等级 Standard Type GB ICS 27.010 CCS F01 Status 现行 Issue Date 2019-12-31 Implementation 2020-07-01 Responsible Dept 国家标准委 Drafting Unit N/A