标準規定了錐形管螺紋,适用于管道、管件、流體機械等連接螺紋上主要用于壓力密封接頭的螺紋。螺紋名稱中PT 3-1/2和PT 7至PT 12的錐管螺紋以及PS 3-1/2和PS 7至PS 12的平行管螺紋應符合附件(規範性)的規定。不适用于井管和其他特殊產品的螺紋。
尺寸代碼 | 每25.4mm内所包含的牙數 n | 螺距 P (mm) | 牙高 h (mm) | 基準平面内的基本直徑 | ||
大徑d=D (mm) | 中徑d2=D2 (mm) | 小徑d1=D1 (mm) | ||||
R1/16 | 28 | 0.9071 | 0.581 | 7.723 | 7.142 | 6.561 |
R1/8 | 28 | 0.9071 | 0.581 | 9.728 | 9.147 | 8.566 |
R1/4 | 19 | 1.3368 | 0.856 | 13.157 | 12.301 | 11.445 |
R1/8 | 19 | 1.3368 | 0.856 | 16.662 | 15.806 | 14.95 |
R1/2 | 14 | 1.8143 | 1.162 | 20.955 | 19.793 | 18.631 |
R3/4 | 14 | 1.8143 | 1.162 | 26.441 | 25.279 | 24.117 |
R1 | 11 | 2.3091 | 1.479 | 33.249 | 31.77 | 30.291 |
R1-1/4 | 11 | 2.3091 | 1.479 | 41.91 | 40.431 | 38.952 |
R1-1/2 | 11 | 2.3091 | 1.479 | 47.803 | 46.324 | 44.845 |
R2 | 11 | 2.3091 | 1.479 | 59.614 | 58.135 | 56.656 |
R2-1/2 | 11 | 2.3091 | 1.479 | 75.184 | 73.705 | 72.226 |
R3 | 11 | 2.3091 | 1.479 | 87.884 | 86.405 | 84.926 |
R4 | 11 | 2.3091 | 1.479 | 113.03 | 111.551 | 110.072 |
R5 | 11 | 2.3091 | 1.479 | 138.43 | 136.951 | 135.472 |
R6 | 11 | 2.3091 | 1.479 | 163.83 | 162.351 | 160.872 |
PT1/8 | 28 | 0.9071 | 0.581 | 9.728 | 9.147 | 8.566 |
PT1/4 | 19 | 1.3368 | 0.856 | 13.157 | 12.301 | 11.445 |
PT3/8 | 19 | 1.3368 | 0.856 | 16.662 | 15.806 | 14.95 |
PT1/2 | 14 | 1.8143 | 1.162 | 20.955 | 19.793 | 18.631 |
PT3/4 | 14 | 1.8143 | 1.162 | 26.441 | 25.279 | 24.117 |
PT1 | 11 | 2.3091 | 1.479 | 33.249 | 31.77 | 30.291 |
PT1-1/4 | 11 | 2.3091 | 1.479 | 41.91 | 40.431 | 38.952 |
PT1-1/2 | 11 | 2.3091 | 1.479 | 47.803 | 46.324 | 44.845 |
PT2 | 11 | 2.3091 | 1.479 | 59.614 | 58.135 | 56.656 |
PT2-1/2 | 11 | 2.3091 | 1.479 | 75.184 | 73.705 | 72.226 |
PT3 | 11 | 2.3091 | 1.479 | 87.884 | 86.405 | 84.926 |
PT3-1/2 | 11 | 2.3091 | 1.479 | 100.33 | 98.851 | 97.372 |
PT4 | 11 | 2.3091 | 1.479 | 113.03 | 111.551 | 110.072 |
PT5 | 11 | 2.3091 | 1.479 | 138.43 | 136.951 | 135.472 |
PT6 | 11 | 2.3091 | 1.479 | 163.83 | 162.351 | 160.872 |
PT7 | 11 | 2.3091 | 1.479 | 189.23 | 187.751 | 186.272 |
PT8 | 11 | 2.3091 | 1.479 | 214.63 | 213.151 | 211.672 |
PT9 | 11 | 2.3091 | 1.479 | 240.03 | 238.551 | 237.072 |
PT10 | 11 | 2.3091 | 1.479 | 265.43 | 263.951 | 262.472 |
PT12 | 11 | 2.3091 | 1.479 | 316.23 | 314.751 | 313.272 |