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石油管線螺紋塞規，石油管線螺紋環規，LP量規
Standard No.GB9253.7
Standard No.GB9253.7
| 公稱直徑 | 螺距 | 錐度 | 塞規PLUG | 環規RING | |
| Gage code | Pitch. | Taper | L | D | L |
| 1/8 LP | 0.9407 | 1：16 | 88 | 30 | 11 |
| 1/4 LP | 1.4111 | 100 | 30 | 16 | |
| 3/8 LP | 111 | 38 | 16 | ||
| 1/2 LP | 1.8143 | 127 | 40 | 21 | |
| 3/4 LP | 127 | 45 | 231 | ||
| 1 LP | 2.2087 | 142 | 54 | 26 | |
| 1 1/4 LP | 142 | 62 | 26 | ||
| 1 1/2 LP | 143 | 68 | 27 | ||
| 2 LP | 144 | 83 | 28 | ||
| 2 1/2 LP | 3.1750 | 176 | 99 | 41 | |
| 3 LP | 177 | 117 | 42 | ||
| 3 1/2 LP | 178 | 130 | 43 | ||
| 4 LP | 180 | 146 | 45 | ||
| 5 LP | 182 | 173 | 47 | ||
| 6 LP | 185 | 200 | 20 | ||
石油管線螺紋塞規，石油管線螺紋環規，LP量規