Home / Standards / GB/T 47394-2026 GB/T 47394-2026 Upcoming Flue gas condensing heat recovery unit for gas-fired heating boilers 供热燃气锅炉烟气冷凝热能回收装置 Standard Type GBT ICS 91.140.10 CCS P46 Status 即将实施 Issue Date 2026-03-31 Implementation 2026-10-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A