Home / Standards / GB/T 5117 GB/T 5117 Active Covered electrodes for manual metal arc welding of non-alloy and fine grain steels 非合金钢及细晶粒钢焊条 Standard Type GBT ICS 25.160.20 CCS J33 Status 现行 Issue Date 2012-11-05 Implementation 2013-03-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委