规格

D

D1

D2

d

RpX

h

b

c

L

20×1/2F

27

19.3

19.5

16

1/2

15

15

15

40

20×3/4F

27

19.3

19.5

17

3/4

15

15

13

39

25×1/2F

33.5

24.3

24.5

16

1/2

17

17

42

25×3/4F

33.5

24.3

24.5

21.5

3/4

17

17

15

41

25×1F

33.5

24.3

24.5

27

1

17

17

15

45

32×3/4F

42

31.3

31.5

21.5

3/4

19

19

43

32×1F

42

31.3

31.5

27

1

19

19

17

47

40×11/4F

51.5

39.2

39.4

36

1′/4

21

21

19

52

40×11/2F

51.5

39.2

39.4

37

1′/2

21

21

19

52

50×11/2F

63.5

49.2

49.4

41

1′/2

24

24

19

55

50×2F

63.5

49.2

49.4

47

2

24

24

22

61

50×2F

79

62.2

62.4

53

2

28

28

65