55°圓錐管螺紋型式和尺寸
| 螺紋代號 | 基本尺寸 英 寸 | 大徑 mm d=D | 螺距 mm p | 每英寸牙數 tpi | 中徑 mm d2=D2 | 小徑 外螺紋 d3 | 牙型高度 H1 | 圓弧尺寸 r | 底孔尺寸 mm |
| R 1/16 | 1/16＂ | 7.723 | 0.907 | 28 | 7.142 | 6.561 | 0.581 | 0.125 | 6.4 |
| R 1/8 | 1/8＂ | 9.728 | 0.907 | 28 | 9.147 | 8.566 | 0.581 | 0.125 | 8.4 |
| R 1/4 | 1/4＂ | 13.157 | 1.337 | 19 | 12.301 | 11.445 | 0.856 | 0.184 | 11.2 |
| R 3/8 | 3/8＂ | 16.662 | 1.337 | 19 | 15.806 | 14.950 | 0.856 | 0.184 | 14.75 |
| R 1/2 | 1/2＂ | 20.955 | 1.814 | 14 | 19.793 | 18.631 | 1.162 | 0.249 | 18.25 |
| R 3/4 | 3/4＂ | 26.441 | 1.814 | 14 | 25.279 | 24.117 | 1.162 | 0.249 | 23.75 |
| R 1 | 1＂ | 33.249 | 2.309 | 11 | 31.77 | 30.291 | 1.479 | 0.317 | 30 |
| R 1 1/4 | 1 1/4＂ | 41.910 | 2.309 | 11 | 40.431 | 38.952 | 1.479 | 0.317 | 38.5 |
| R 1 1/2 | 1 1/2＂ | 47.803 | 2.309 | 11 | 46.324 | 44.845 | 1.479 | 0.317 | 44.5 |
| R 2 | 2＂ | 59.614 | 2.309 | 11 | 58.135 | 56.656 | 1.479 | 0.317 | 56 |
| R 2 1/2 | 2 1/2＂ | 75.184 | 2.309 | 11 | 73.705 | 72.226 | 1.479 | 0.317 | 71 |
| R 3 | 3＂ | 87.884 | 2.309 | 11 | 86.405 | 84.926 | 1.479 | 0.317 | 85.5 |
| R 4 | 4＂ | 113.030 | 2.309 | 11 | 111.551 | 110.072 | 1.479 | 0.317 | 110.5 |
| R 5 | 5＂ | 138.430 | 2.309 | 11 | 136.951 | 135.472 | 1.479 | 0.317 | 136 |
| R 6 | 6＂ | 163.830 | 2.309 | 11 | 162.351 | 160.872 | 1.479 | 0.317 | 161.5 |
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地址: 浙江省.寧波市鄞州區寧姜公路（九曲小區二期旁) 郵編: 315040 聯系人: 盛立峰
電話: 0574-87139378 傳真: 0574-87139378 手機: 13867861670
