Home / Standards / GB/T 2363-2025 GB/T 2363-2025 Active Accuracy of fine-pitch involute cylindrical gears 小模数渐开线圆柱齿轮精度 Standard Type GBT ICS 21.200 CCS J17 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 国家标准委 Drafting Unit N/A