Home / Standards / GB 223.56-87 GB 223.56-87 Steel and alloy—Determination of tellurium content—Mercaptoacetic acid cotton separation-oscillopolarographic method 钢铁及合金化学分析方法 巯基棉分离-示波极谱法测定碲量 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