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管螺纹环规，R规，管螺纹塞规
注：用螺纹密封的管螺纹环塞规
型号：GB/T 10031
型号：GB/T 10031
| 公称直径 | 螺距 | 锥度 | |
| Gage code | Tooth No. | Pitch | Taper |
| R1/16 | 28 | 0.907 | 1:16 |
| R1/8 | |||
| R1/4 | 19 | 1.337 | |
| R3/8 | |||
| R1/2 | 14 | 1.814 | |
| R3/4 | |||
| R1 | 11 | 2.309 | |
| R1 1/4 | |||
管螺纹环规，R规，管螺纹塞规
| 公称直径 | 螺距 | 锥度 | |
| Gage code | Tooth No. | Pitch | Taper |
| R1 1/2 | 11 | | 1:16 |
| R2 | |||
| R2 1/2 | |||
| R3 | |||
| R3 1/2 | | | |
| R4 | |||
| R5 | |||
| R6 | |||