Home / Standards / GB/T 20326-2006 GB/T 20326-2006 Abolished Long Full-diameter shank taps with recess 粗长柄机用丝锥 Standard Type GBT ICS 25.100.50 CCS J41 Status 废止 Issue Date 2006-07-20 Implementation 2007-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A