Home / Standards / GB/T 20335-2006 GB/T 20335-2006 Active Boring bars (tool holders with cylindrical shank) for indexable inserts - Dimensions 装可转位刀片的镗刀杆(圆柱形)-尺寸 Standard Type GBT ICS 25.100.99 CCS J41 Status 现行 Issue Date 2006-07-20 Implementation 2007-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A