Home / Standards / GB/T 970.1-2008 GB/T 970.1-2008 Active Circular screwing dies - Part 1: The types and dimensions for circular screwing dies and die stocks 圆板牙 第1部分：圆板牙和圆板牙架的型式和尺寸 Standard Type GBT ICS 25.100.50 CCS J41 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