Home / Standards / GB/T 6577-2021 GB/T 6577-2021 Active Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston 液压缸活塞用带支承环密封沟槽型式、尺寸和公差 Standard Type GBT ICS 23.100.60 CCS J20 Status 现行 Issue Date 2021-05-21 Implementation 2021-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A