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GB/T 223.40-1985
GB/T 223.40-1985 Methods for chemical analysis of iron, steel and alloy—The anion-exchange separation-sulphochlorophenol S photometric method for the determination of niobium content
General Product Information
| Committee | The General Research Institute of Steel of the Ministry of Metallurgical Industry |
|---|---|
| Document Type | National standards |
| Publisher Name | National Standards Bureau |
| Standard Status | Replaced |
| Standard Code | GB/T 223.40-1985 |
| CCS | Analysis methods for steel and iron alloys |
| ICS | Black metals |
| Implement Date | 1986-06-01 |
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