Home / Standards / GB/T 35842-2018 GB/T 35842-2018 Active Technical requirements for pre-insulated directly buried valve of urban heating 城镇供热预制直埋保温阀门技术要求 Standard Type GBT ICS 91.140.60 CCS P46 Status 现行 Issue Date 2018-02-06 Implementation 2019-01-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A