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| Chinese National Standard Category: Casting |
| English Title: | Tset method of ultrasonic sound velocity for spheroidal graphite cast irons |
| Chinese Title: | 球墨铸铁 超声声速测定方法 |
| Standard No.: | JB/T 9219-1999 |
| Category No.: | J31 |
| Issued by: | |
| Issued on: | 1999-6-24 |
| Implemented on: | 2000-6-24 |
| Status: | superseded |
| Superseded by: | JB/T 9219-2016 |
| Superseded on: | 2016-6-1 |
| Abolished on: | |
| Superseding: | JB/Z 265-1986 |
| Word Count: | 4000 words |
| Similar Standards: | GB 4987-1985 T/CPUMT 005-2022 GB/T 43139-2023 GB/T 15116-2023 GB/T 7233.2-2023 GB/T 43409-2023 GB/T 43415-2023 GB/T 7233.1-2023 GB/T 24733-2023 GB/T 9439-2023 GB/T 7216-2023 GB/T 26656-2023 GB/T 41972-2022 GB/T 41162-2022 GB/T 41160-2022 GB/T 26655-2022 GB/T 17445-2022 GB/T 25747-2022 GB/T 9441-2021 GB/T 40809-2021 |
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