Home / Standards / GB/T 4346-2008 GB/T 4346-2008 Active Machine tools - Manually operated self-centring chucks 机床 手动自定心卡盘 Standard Type GBT ICS 25.060.20 CCS J52 Status 现行 Issue Date 2008-06-03 Implementation 2009-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A