Home / Standards / GB 223.29-84 GB 223.29-84 Steel and alloy—Determination of lead content by carrier precipitation-xylenol orange photometric method 钢铁及合金化学分析方法 载体沉淀-二甲酚橙光度法测定铅量 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