Home / Standards / GB 24500-2009 GB 24500-2009 Abolished The minimum allowable values of energy efficiency and energy efficiency grades of industrial boilers 工业锅炉能效限定值及能效等级 Standard Type GB ICS 27.060 CCS F04 Status 废止 Issue Date 2009-10-30 Implementation 2010-09-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委