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| Standard Insuued on: 1981-06 |
SJ 1820-1981 Preferred fine-pitch spur gears
优选小模数圆柱直齿轮
| Category No.: | SJ | Valid Status: | valid |
| Issued Organization: | MIIT | Issued Date: | 1981-06-18 |
| Implemented Date: | 1982-1-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
GB/T 2681-1981
GB/T 2592.9-1981
GB/T 2592.7-1981
GB/T 2590.1-1981
GB/T 2592.3-1981
GB/T 2592.2-1981
GB/T 2596-1981
GB/T 2592.6-1981
GB/T 2592.5-1981
GB/T 2592.1-1981
GB/T 223.2-1981
GB/T 2592.4-1981
GB/T 2590.10-1981
GB/T 2590.11-1981
GB/T 2592.8-1981
GB/T 304.9-1981
SJ 1821-1981
GB/T 2684-1981
SJ 1820-1981
SJ 1822-1981
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