成量R-55°圆锥管螺纹环规 执行标准： ISO 7-2：2000；JB/T 10031|
1 | null | R 1/16 | 28 | 0.907 | 4.867 | ±0.013 | 1.814 | — | 7.723 | 7.142 | 6.695 | — | 30 |
2 | null | R 1/8 | 28 | 0.907 | 4.867 | ±0.013 | 1.814 | — | 9.728 | 9.147 | 8.700 | — | 30 |
3 | null | R 1/4 | 19 | 1.337 | 7.353 | ±0.013 | 2.674 | — | 13.157 | 12.301 | 11.643 | — | 38 |
4 | null | R 3/8 | 19 | 1.337 | 7.687 | ±0.013 | 2.674 | — | 16.662 | 15.806 | 15.148 | — | 38 |
5 | null | R 1/2 | 14 | 1.814 | 9.979 | ±0.013 | 3.628 | — | 20.955 | 19.793 | 18.899 | — | 46 |
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