Home / Standards / GB/T 223.75-91 GB/T 223.75-91 Steel and alloy—Determination of boron content—Methanol distillation-curcumin photometric method 钢铁及合金化学分析方法 甲醇蒸馏-姜黄素光度法测定硼量 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