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Chinese National Standard Category: Steel and iron alloy analysis method |
English Title: | Zinc or zinc alloy coating on steel sheets or strips―Determination of hexavalent chromium content―1,5-Diphenylcarbohydrazide(diphenylcarbazide) spectrophotometric method |
Chinese Title: | 钢板及钢带 锌及锌合金镀层中六价铬含量的测定 二苯碳酰二肼分光光度法 |
Standard No.: | GB/T 31931-2015 |
Category No.: | H11 |
Issued by: | AQSIQ, SAC |
Issued on: | 2015-09-11 |
Implemented on: | 2016-6-1 |
Status: | valid |
Superseded by: | |
Superseded on: | |
Abolished on: | |
Superseding: | |
Word Count: | 3500 words |
Similar Standards: | GB 4333.5-1984 GB/T 7730.5-2000 GB/T 7731.16-1999 GB/T 4333.9-1988 GB/T 7730.2-2002 GB/T 7730.8-2000 GB/T 8704.3-1997 GB 4010-1983 GB 7730.6-1988 GB/T 8704.9-1994 GB 7731.3-1987 GB/T 5687.5-1988 GB/T 5686.9-2023 GB/T 3654.8-2023 GB/T 7731.17-2023 GB/T 5686.5-2023 GB/T 3653.3-2023 GB/T 223.92-2023 GB/T 4333.2-2023 GB/T 42794-2023 |
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