Home / Standards / GB 223.63-87 GB 223.63-87 Steel and alloy—Determination of manganese content by sodium periodate spectrophotometric method 钢铁及合金化学分析方法 高碘酸钠光度法测定锰量 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A