Home / Standards / GB/T 28898-2012 GB/T 28898-2012 Active Evaluation of uncertainty in chemical composition analysis for metallurgical materials 冶金材料化学成分分析测量不确定度评定 Standard Type GBT ICS 77.080.01 CCS H11 Status 现行 Issue Date 2012-11-05 Implementation 2013-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A