Home / Standards / GB/T 6247.4-2013 GB/T 6247.4-2013 Active Rock drilling machines and portable power tools―Terminology―Part 4: Performance test 凿岩机械与便携式动力工具 术语 第4部分:性能试验 Standard Type GBT ICS 01.040.19 CCS J84 Status 现行 Issue Date 2013-12-31 Implementation 2014-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A