Home / Standards / GB 223.58-87 GB 223.58-87 Steel and alloy—Determination of manganese content by sodium arsenite-sodium nitrite titrimetric method 钢铁及合金化学分析方法 亚砷酸钠-亚硝酸钠滴定法测定锰量 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