Home / Standards / GB/T 46840-2025 GB/T 46840-2025 Upcoming Grout seal device 灌浆封隔装置 Standard Type GBT ICS 83.140.99 CCS G47 Status 即将实施 Issue Date 2025-12-02 Implementation 2026-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A