Home / Standards / GB/T 40068-2021 GB/T 40068-2021 Active Electrofusion welding sleeve(tape) for thermal insulation pipeline 保温管道用电热熔套(带) Standard Type GBT ICS 91.140.10 CCS P46 Status 现行 Issue Date 2021-05-21 Implementation 2021-12-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A