nominal diamenter
DN

length
L(mm)

outer of flang 
D(mm)

diameter of the central ring of the bolt 
D₁(mm)

flange thickness
B(mm)

the quality of the bolt
n

bolt hole diameter 
(mm)

axial displacement

horizontal
mm

defection  angular

(α₁+α₂)

mm

inch

extension

compression

40

11/4

140

145

110

16

4

18

6

10

9

7.5°

50

2

150

160

125

18

4

18

7

10

10

7.5°

65

2 1/4

170

180

145

18

4

18

7

13

11

7.5°

80

3

190

195

160

20

4

18

8

15

12

7.5°

100

4

200

215

180

20

8

18

10

19

13

7.5°

125

5

200

245

210

22

8

18

12

19

13

7.5°

150

6

210

280

240

22

8

23

12

20

13

7.5°

200

8

230

335

295

22

8

23

16

25

14

7.5°

250

10

250

390

350

24

12

23

16

25

22

7.5°

300

12

270

440

400

26

12

23

16

25

22

7.5°

350

14

290

500

460

26

16

23

16

25

22

7.5°

400

16

310

565

515

28

16

25

16

25

22

7.5°

500

20

350

670

620

32

20

25

16

25

22

7.5°

600

24

390

780

725

36

20

30

16

25

22

7.5°