Nominal

Outside Dia

Socket Type

Structural Diameter

Size

Do

d1

d2

I

d

L

NPT （牙 / 寸

1/2"

30.5

21.54

21.23

24.22

14

50

14

3/4"

35

26.87

26.57

27.40

19

50

14

1"

44

33.66

33.27

30.58

24

59

11.5

1-1/4"

54

42.42

42.04

34.75

32

61

11.5

1-1/2"

60

48.56

48.11

37.93

38

72

11.5

2"

73

60.63

60.17

41.10

50

77

11.5

2-1/2"

88

73.38

72.85

47.45

61

97

8

3"

105

89.31

88.70

50.63

73

104

8

4"

132

114.80

114.10

60.15

96

116

8