重  PN

DN

0.25

0.6

1.0

1.6

2.5

4.0

6.3

10.0

16.0

25.0

10

0.38

0.38

0.63

0.63

0.63

0.63

1.14

1.14

1.36

2.12

15

0.44

0.44

0.71

0.71

0.71

0.71

1.26

1.26

1.64

2.50

20

0.66

0.66

1.01

1.01

1.01

1.01

1.92

1.92

2.88

2.92

25

0.82

0.82

1.23

1.23

1.23

1.23

2.71

2.71

3.61

3.55

32

1.34

1.34

2.03

2.03

2.03

2.03

3.27

3.27

4.63

4.99

40

1.59

1.59

2.35

2.35

2.35

2.35

4.32

4.32

5.98

6.60

50

1.86

1.86

3.20

3.20

3.20

3.20

4.88

6.09

83.27

8.10

65

2.45

2.45

4.06

4.06

4.29

4.29

6.11

7.95

11.1

12.3

80

3.86

3.86

4.61

4.61

5.53

5.53

7.31

9.37

13.5

16.4

100

4.57

4.75

6.21

6.21

7.59

7.59

10.6

14.0

20.2

27.0

125

6.78

6.10

8.12

8.12

10.8

10.8

16.7

22.3

31.2

37.9

150

8.34

8.34

11.4

11.4

14.6

14.6

24.5

30.6

43.2

57.2

200

13.5

13.5

16.5

16.5

22.5

27.2

40.5

54.3

68.9

108.2

250

20.2

20.2

24.1

25.0

33.5

44.4

58.2

87.5

114.3

188.2

300

27.8

27.8

30.8

35.1

46.3

64.1

83.4

131.6

170.3

320.1

350

34.7

34.7

39.6

48.0

68.0

89.5

115.8

178.8

400

42.0

42.0

49.4

63.5

89.6

126.7

155.5

239.9

450

51.2

51.2

62.9

86.9

119.9

154.1

500

65.1

65.1

75.1

108.6

150.0

187.8

600

102.9

102.9

123.7

184.3

244.3

331.0

700

160.5

178.3

182.5

235.7

800

217.5

251.9

259.9

325.0

900

279.5

335.4

343.8

437.1

1000

350.8

434.3

473.2

601.7

1200

504.8

717.0

764.7

998.2

1400

724.2

1093.8

1600

995.7

1544.1

1800

13.4.6

2130.1

2000

1698.7

2860.5