Outside Dia

Socked type

Structural Diameter

Size

Do

d1

d2

I

d

1/2″

30.5

21.54

21.23

24.22

16.5

3/4″

36.5

26.87

26.57

27.4

22

1″

44

33.66

33.27

30.58

28

1-1/4″

54

42.42

42.04

34.75

35

1-1/2″

60

48.56

48.11

37.93

43

2″

73

60.63

60.17

41.1

54

2-1/2″

88

73.38

72.85

47.45

69

3″

105

89.31

88.70

50.63

84

4″

133

114.76

114.07

60.1

109