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| Chinese National Standard Category: Metal mechanical property test method |
| English Title: | Hardness Test Method of Forging (Rolling) Steel Grinding Ball: Rockwell Hardness |
| Chinese Title: | 锻（轧）钢球硬度的检测方法 洛氏硬度 |
| Standard No.: | DB13/T 5591-2022 |
| Category No.: | H22 |
| Issued by: | Hebei Provincial Administration for Market Regulation |
| Issued on: | 2022-07-11 |
| Implemented on: | 2022-8-11 |
| Status: | abolished |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | 2025-07-17 |
| Superseding: | |
| Word Count: | words |
| Similar Standards: | GB/T 38814-2020E GB/T 29459.3-2025 GB/T 46169-2025 GB/T 4337-2025 DB13/T 5591-2022 GB/T 33820-2025 GB/T 23604-2024 GB/T 4340.1-2024 GB/T 44030-2024 GB/T 2039-2024 GB/T 18449.1-2024 GB 1172-1974 GB 4161-1984 GB/T 43896-2024 GB/T 43853-2024 NB/T 47016-2023 GB/T 22638.11-2023 GB/T 42900-2023 GB/T 6803-2023 GB/T 16865-2023 |
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