Ду

B

A, мм

6

1/8"

17

8

1/4"

19

10

3/8"

25

15

1/2"

28

20

3/4"

33

25

1"

38

32

1 1/4"

45

40

1 1/2"

48

50

2"

58

65

2 1/2"

69

80

3"

78

100

4"

96