Home / Standards / GB/T 20311-2006 GB/T 20311-2006 Abolished Building components and building elements - Thermal resistance and thermal transmittance - Calculation method 建筑构件和建筑单元 热阻和传热系数 计算方法 Standard Type GBT ICS 91.120.10 CCS Q25 Status 废止 Issue Date 2006-07-19 Implementation 2006-12-01 Responsible Dept 中国建筑材料联合会 Drafting Unit 中国建筑材料联合会