Home / Standards / GB/T 5901.2-1986 GB/T 5901.2-1986 Active Testing of accuracy of four-jaw independent chucks 四爪单动卡盘 精度 Standard Type GBT ICS 25.060.20 CCS J52 Status 现行 Issue Date 1986-03-01 Implementation 1987-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A