管螺纹知识？

螺 紋

下 孔 徑

內螺紋小徑(參考)

尺 寸

大 徑

標準嵌合

高度H

系 列

100

95

90

85

80

75

70

65

60

最小直徑

最大直徑

G 1/16

7.723

0.5808

6.56

6.62

6.68

6.74

6.79

6.85

6.91

6.97

7.03

6.843

6.561

G(PF)1/8

9.728

_〞

8.57

8.62

8.68

8.74

8.80

8.86

8.92

8.97

9.03

8.848

8.566

1/4

13.157

0.8560

11.53

11.62

11.70

11.79

11.87

11.96

12.04

12.13

11.890

11.445

3/8

16.662

_〞

14.95

15.04

15.12

15.21

15.29

15.38

15.46

15.55

15.64

15.395

14.950

1/2

20.955

1.1618

18.8

18.9

19.0

19.1

19.2

19.3

19.4

19.6

19.172

18.631

5/8

22.911

_〞

20.6

20.7

20.8

20.9

21.0

21.2

21.3

21.4

21.5

21.130

20.589

3/4

26.441

_〞

24.2

24.4

24.5

24.6

24.7

24.8

24.9

25.0

24.658

24.117

7/8

30.201

_〞

27.9

28.0

28.1

28.2

28.3

38.5

28.6

28.7

28.8

28.418

27.877

1

33.249

14.786

30.3

30.4

30.6

30.7

30.9

31.0

31.2

31.3

31.5

30.931

30.291

1 1/8

37.897

_〞

35.1

35.2

35.4

35.5

35.7

35.8

35.9

36.5

35.579

34.939

1 1/4

41.910

_〞

39.0

39.1

39.2

39.4

39.6

39.7

39.8

40.0

40.1

39.592

38.952

1 3/8

44.323

_〞

41.4

41.5

41.7

41.8

42.0

42.1

42.2

42.4

42.6

42.005

41.365

1 1/2

47.803

_〞

45.0

45.1

45.3

45.4

45.6

45.7

45.9

46.0

45.485

49.023

1 5/8

51.910

_〞

49.2

49.3

49.5

49.6

49.8

49.9

50.0

50.2

49.672

50.788

1 3/4

53.746

_〞

50.8

50.9

51.1

51.2

51.4

51.5

51.7

52.0

52.0

51.428

56.656

2

59.614

_〞

56.8

57.0

57.1

57.2

57.4

57.5

57.8

57.8

57.296