Home / Standards / GB/T 223.18-94 GB/T 223.18-94 Steel and alloy—Determination of copper content by sodium thiosulfate separation-iodometric method 钢铁及合金化学分析方法 硫代硫酸钠分离-碘量法测定铜量 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A