Home / Standards / GB/T 10947-2006 GB/T 10947-2006 Active Taper shank twist drills with carbide tips 硬质合金锥柄麻花钻 Standard Type GBT ICS 25.100.30 CCS J41 Status 现行 Issue Date 2006-12-30 Implementation 2007-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A