Home / Standards / GB/T 223.63-1988 GB/T 223.63-1988 Abolished Methods for chemical analysis of iron,steel and alloy--The sodium (potassium) periodate photometric method for the determination of manganese content 钢铁及合金化学分析方法 高碘酸钠(钾)光度法测定锰量 Standard Type GBT ICS 77.080 CCS H11 Status 废止 Issue Date 1988-02-05 Implementation 1989-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A