Home / Standards / GB/T 31558-2015 GB/T 31558-2015 Active 5-axis simultaneous CNC spiral bevel gear grinding machines—Testing of the accuracy 五轴联动数控螺旋 锥齿轮磨齿机 精度检验 Standard Type GBT ICS 25.040.20 CCS J56 Status 现行 Issue Date 2015-05-15 Implementation 2016-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A