Home / Standards / GB/T 35922-2025 GB/T 35922-2025 Upcoming Technical specification of impregnation for impervious graphite 不透性石墨浸渍耐蚀作业技术规范 Standard Type GBT ICS 59.100 CCS Q50 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