Home / Standards / GB/T 13246-91 GB/T 13246-91 Chemical analysis of carbon-containing refractory materials—Determination of magnesium oxide content by CyDTA volumetric method 含碳耐火材料化学分析方法 CyDTA容量法测定氧化镁量 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