Home / Standards / GB 223.48-65 GB 223.48-65 Steel and alloy—Determination of bismuth content by semixylenol orange photometric method 钢铁及合金化学分析方法 半二甲酚橙光度法测定铋量 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