Home / Standards / GB/T 29046-2023 GB/T 29046-2023 Active Detection methods of technical specification for pre-insulated district heating pipes 城镇供热预制保温管道技术指标检测方法 Standard Type GBT ICS 91.140.10 CCS P46 Status 现行 Issue Date 2023-09-07 Implementation 2024-04-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A