Home / Standards / GB/T 13748.22-2013 GB/T 13748.22-2013 Active Chemical analysis methods of magnesium and magnesium alloys - Part 22:Determination of thorium content 镁及镁合金化学分析方法 第22部分:钍含量测定 Standard Type GBT ICS 77.120.10 CCS H12 Status 现行 Issue Date 2013-09-27 Implementation 2014-08-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A