55度管螺纹标准尺寸对照表(优质严制)

55°圆锥管螺纹(BSPT)

螺纹代

号基本尺寸

英

寸

大径

mm

d=D

螺距

mm

p

每英寸牙

数

tpi

中径

mm

d2=D

2

小径

外螺

纹

d3

牙型高

度

H1

圆弧尺

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

55°圆柱管螺纹的型式和尺寸

British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)

螺纹代号基本尺

寸

大径

mm

d=D

螺距

mm

p

每英寸牙

数

tpi

中径

mm

d2=D2

小径

外螺纹

d3

牙型高

度

H1

底孔尺

寸

mm

G 1/8 1/8"9.7280.90

7

289.1478.5660.5818.7

G 1/4 1/4"13.15

7

1.33

7

1912.30111.4450.85611.6

G 3/8 3/8"16.66

2

1.33

7

1915.80614.950.85615

G 1/2 1/2"20.95

5

1.81

4

1419.79318.631 1.16219

G 5/8 5/8"22.91

1

1.81

4

1421.74920.587 1.16220.75

G 3/4 3/4"26.44

1

1.81

4

1425.27924.117 1.16224.5

G 7/8 7/8"30.20

1

1.81

4

1429.03927.877 1.16228

G 1 1"33.24

9

2.30

9

1131.7730.291 1.47930.5

G 1 1/8 1 1/8"37.89

7

2.30

9

1136.41834.939 1.47935

G 1 1/4 1 1/4"41.912.30

9

1140.43138.952 1.47939.5

G 1 3/8 1 3/8" 44.32

3

2.30

9

1142.84441.365 1.47941.5

G 1 1/2 1 1/2"47.80

3

2.30

9

1146.32444.845 1.47945

G 1 3/4 1 3/4"53.74

6

2.30

9

1152.26750.788 1.47951

G 2 2"59.61

4

2.30

9

1158.13556.656 1.47957

G 2 1/4 2 1/4"65.712.30

9

1164.23162.752 1.47963

G 2 1/2 2 1/2"75.18

4

2.30

9

1173.70572.226 1.47972.5

G 2 3/4 2 3/4"81.53

4

2.30

9

1180.05578.576 1.47979

G 3 3"87.88

4

2.30

9

1186.40584.926 1.47985.

G 3 1/4 3 1/4"93.982.30

9

1192.50191.022 1.47991

G 3 1/2 3 1/2"100.3

3

2.30

9

1198.35197.372 1.47997.75

G 3 3/4 3 3/4"106.6

8

2.30

9

11

105.20

1

103.72

2

1.479104

G 4 4"113.0

3

2.30

9

11111.55

110.07

2

1.479110.5

G 4 1/2 4 1/2"125.7

3

2.30

9

11

124.25

1

122.77

2

1.479123

G 55"138.4

3

2.30

9

11

136.95

1

135.47

2

1.479136

G 5 1/2 5 1/2"151.1

3

2.30

9

11

149.65

1

148.17

2

1.479148.5

G 6 6"163.8

3

2.30

9

11

162.35

1

160.87

2

1.479161.5