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| International Standard Category: Iron and steel castings |
GB/T 17445-2009 Cast grinding balls
铸造磨球;
| Category No.: | 77.140.80 | Valid Status: | superseded |
| Issued Organization: | AQSIQ; SAC | Issued Date: | 2009-10-30 |
| Implemented Date: | 2010-4-1 | Abolished Date: | 2022-10-01 |
| Superseded Standard.: | GB/T 17445-2022 Cast grinding balls |
Superseded Date: | 2022-10-1 |
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