Home / Standards / GB/T 28638-2012 GB/T 28638-2012 Abolished Heat loss test for thermal insulation structure and evaluation methods for thermal insulation efficiency of district heating pipes 城镇供热管道保温结构散热损失测试与保温效果评定方法 Standard Type GBT ICS 91.140.60 CCS P40 Status 废止 Issue Date 2012-07-31 Implementation 2013-02-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A