Home / Standards / GB/T 29046-2012 GB/T 29046-2012 Abolished Test methods of technical specification for pre-insulated directly buried district heating pipes 城镇供热预制直埋保温管道技术指标检测方法 Standard Type GBT ICS 91.140.60 CCS P40 Status 废止 Issue Date 2012-12-31 Implementation 2013-09-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A