Home / Standards / GB/T 6070-2025 GB/T 6070-2025 Active Vacuum technology—Dimensions of non-knife edge flanges 真空技术 非刀口法兰尺寸 Standard Type GBT ICS 23.160 CCS J78 Status 现行 Issue Date 2025-10-31 Implementation 2026-02-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A