nominal diame  ter(DN)

Length
mm

flange thickness

mm

the quality of hole

(n)

Bolt hole diameter 
(mm)

Diameter of the central ring of the bolt(mm)

Axial

displacement(mm)

Horizontal 

displacement 
mm

deflection  angle 
(a₁+a₂ )

mm

inch

extension

compression

40

1 1/2

150/175

18

4

18

110

10

20

20

30°

50

2

150/175

20

4

18

125

10

20

20

30°

65

1 1/2

150/175

20

4

18

145

10

20

20

30°

80

3

150/175

20

8

18

160

10

20

20

30°

100

4

200/225

22

8

18

180

15

30

25

30°

125

5

200/225

22

8

18

210

15

30

25

30°

150

6

200/325

24

8

22

240

15

30

25

30°

200

8

200/325

24

8

22

295

20

40

30

30°

250

10

200/325

26

12

22

350

20

40

30

30°

300

12

200/325

26

12

22

400

20

40

30

30°

350

14

225/325

26

16

22

460

20

40

30

30°

400

16

225/330

26

16

26

515

20

40

30

30°

450

18

260/330

28

20

26

565

25

45

30

30°

500

20

260/340

28

20

26

620

25

45

30

30°

600

24

260/400

30

20

30

725

25

45

30

30°

note 1,DN40-600PN=1~1.6MPa 2,DN40-200PN=2.5MPa