Home / Standards / GB/T 25667.1-2010 GB/T 25667.1-2010 Active Solid carbide twist drills with parallel shank Part1: The types and dimensions for parallel shank twist drills 整体硬质合金直柄麻花钻 第1部分：直柄麻花钻型式与尺寸 Standard Type GBT ICS 25.100.30 CCS J41 Status 现行 Issue Date 2010-12-23 Implementation 2011-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会