Home / Standards / GB/T 35842-2026 GB/T 35842-2026 Upcoming 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 即将实施 Issue Date 2026-01-28 Implementation 2026-08-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A