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| Standard Insuued on: 1987-04 |
GB 223.52-1987 Methods for chemical analysis of iron,steel and alloy; The hydroxylamine hydrochloride-iodometric method for the determination of selenium content
钢铁及合金化学分析方法 盐酸羟胺-碘量法测定硒量
| Category No.: | GB | Valid Status: | valid |
| Issued Organization: | Ministry of Metallurgical Industry | Issued Date: | 1987-04-03 |
| Implemented Date: | 1988-3-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
GB/T 7701.3-2008
GB/T 5480.7-1987
GB/T 7679.7-1987
GB/T 7677-1987
GB/T 7678-1987
GB/T 7679.5-1987
HB 1389-1987
CB 976.2-1987
CB 976.3-1987
CB* 3305-1987
CB 976.1-1987
CB* 3297-1987
YS/T 267-1994
GB/T 8010-1987
CB* 3319-1987
CB* 3272-1987
CB* 3271-1987
GB/T 7631.2-1987
CB 1171.7-1987
GB 7632-1987
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