China 'GB/T 223.16-1991
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 223.16-1991
Methods for chemical analysis of iron,steel and alloy--The chromotropic acid photometric method for the determination of titanium content 钢铁及合金化学分析方法 变色酸光度法测定钛量
Issued Date:1991-09-06
Implemented Date:1992-06-01
Issued by:
The Standardization Administration of the People's Republic of China