Home / Standards / GB/T 20975.30-2019 GB/T 20975.30-2019 Active Methods for chemical analysis of aluminium and aluminium alloys—Part 30:Determination of hydrogen content—Heating extraction-thermal conductivity method 铝及铝合金化学分析方法 第30部分:氢含量的测定 加热提取热导法 Standard Type GBT ICS 77.120.10 CCS H12 Status 现行 Issue Date 2019-06-04 Implementation 2020-05-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A