Home / Standards / GB/T 223.9-2008 GB/T 223.9-2008 Abolished Iron, steel and alloy - Determination of aluminium content - Chrom azurol S photometric method 钢铁及合金 铝含量的测定 铬天青S分光光度法 Standard Type GBT ICS 77.080.01 CCS H11 Status 废止 Issue Date 2008-05-13 Implementation 2008-11-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A