Home / Standards / GB/T 45978-2025 GB/T 45978-2025 Active Pressure and temperature classifications for hydraulic systemms of aerospace 航空航天液压系统压力级别和温度型别 Standard Type GBT ICS 49.080 CCS V29 Status 现行 Issue Date 2025-08-01 Implementation 2025-11-01 Responsible Dept 国家标准委 Drafting Unit N/A