Home / Standards / GB/T 30072-2013 GB/T 30072-2013 Abolished Ferronickel - Determination of nickel content - EDTA titrimetric method 镍铁 镍含量的测定 EDTA滴定法 Standard Type GBT ICS 77.100 CCS H11 Status 废止 Issue Date 2013-12-17 Implementation 2014-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A