Home / Standards / GB/T 6556-2024 GB/T 6556-2024 Active Type,main dimension, material and marking of mechanical seals 机械密封的型式、主要尺寸、材料和识别标志 Standard Type GBT ICS 21.140 CCS J 22 Status 现行 Issue Date 2024-09-29 Implementation 2025-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A