Home / Standards / GB/T 4019.2-1997 GB/T 4019.2-1997 Abolished Box type vertical drilling machines--Testing of the accuracy--Part 2:Working tests 方柱立式钻床 精度检验 第2部分:工作精度检验 Standard Type GBT ICS 25.080.40 CCS J54 Status 废止 Issue Date 1997-11-13 Implementation 1998-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A