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| Position: Chinese Standard in English/GB 7731.1-1987 |
| GB 7731.1-1987 Methods for chemical analysis of ferrotungsten-The cinchonine gravimetric method for the determination of tungsten content (English Version) | |||
| Standard No.: | GB 7731.1-1987 | Status: | superseded |
| Language: | English | File Format: | |
| Word Count: | 2000 words | Price(USD): | 60.00 remind me the price change |
| Implemented on: | 1988-3-1 | Delivery: | via email in 1~3 business day |
| Standard No.: | GB 7731.1-1987 |
| English Name: | Methods for chemical analysis of ferrotungsten-The cinchonine gravimetric method for the determination of tungsten content |
| Chinese Name: | 钨铁化学分析方法 辛可宁重量法测定钨量 |
| Chinese Classification: | H11 Steel and iron alloy analysis method |
| Professional Classification: | GB National Standard |
| Issued by: | Ministry of Metallurgical Industry |
| Issued on: | 1987-03-31 |
| Implemented on: | 1988-3-1 |
| Status: | superseded |
| Superseded by: | GB/T 7731.1-2021 Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method |
| Superseded on: | 2022-3-1 |
| Superseding: | YB 583-1965 |
| Language: | English |
| File Format: | |
| Word Count: | 2000 words |
| Price(USD): | 60.00 |
| Delivery: | via email in 1~3 business day |