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GB/T 223.12-1991  China national standard english version:

　
GB
中华人民共和国国家标准
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 223.12-1991

Methodsfor chemical analysis of iron，steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
钢铁及合金化学分析方法 碳酸钠分离-二苯碳酰二肼光度法测定铬量
Issued Date:1991-09-06 　 Implemented Date:1992-06-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 223.12-1991
Standard Category China National Standards
GB Standard English Title Methodsfor chemical analysis of iron，steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
GB Standard Chinese Title 钢铁及合金化学分析方法 碳酸钠分离-二苯碳酰二肼光度法测定铬量
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