管径(DN)

流量 m³/h

0.4m/s

0.6m/s

0.8m/s

1.0m/s

1.2m/s

1.4m/s

1.6m/s

1.8m/s

2.0m/s

2.2m/s

2.4m/s

2.6m/s

2.8m/s

3.0m/s

20

0.5

0.7

0.9

1.1

1.4

1.6

1.8

2.0

2.3

2.5

2.7

2.9

3.2

3.4

25

0.7

1.1

1.4

1.8

2.1

2.5

2.8

3.2

3.5

3.9

4.2

4.6

4.9

5.3

32

1.2

1.7

2.3

2.9

3.5

4.1

4.6

5.2

5.8

6.4

6.9

7.5

8.1

8.7

40

1.8

2.7

3.6

4.5

5.4

6.3

7.2

8.1

9.0

10.0

10.9

11.8

12.7

13.6

50

2.8

4.2

5.7

7.1

8.5

9.9

11.3

12.7

14.1

15.6

17.0

18.4

19.8

21.2

65

4.8

7.2

9.6

11.9

14.3

16.7

19.1

21.5

23.9

26.3

28.7

31.1

33.4

35.8

80

7.2

10.9

14.5

18.1

21.7

25.3

29.0

32.6

36.2

39.8

43.4

47.0

50.7

54.3

100

11.3

17.0

22.6

28.3

33.9

39.6

45.2

50.9

56.5

62.2

67.9

73.5

79.2

84.8

125

17.7

26.5

35.3

44.2

53.0

61.9

70.7

79.5

88.4

97.2

106.0

114.9

123.7

132.5

150

25.4

38.2

50.9

63.6

76.3

89.1

101.8

114.5

127.2

140.0

152.7

165.4

178.1

190.9

200

45.2

67.9

90.5

113.1

135.7

158.3

181.0

203.6

226.2

248.8

271.4

294.1

316.7

339.3

250

70.7

106.0

141.4

176.7

212.1

247.4

282.7

318.1

353.4

388.8

424.1

459.5

494.8

530.1

300

101.8

152.7

203.6

254.5

305.4

356.3

407.1

458.0

508.9

559.8

610.7

661.6

712.5

763.4

350

138.5

207.8

277.1

346.4

415.6

484.9

554.2

623.4

692.7

762.0

831.3

900.5

969.8

1039.1

400

181.0

271.4

361.9

452.4

542.9

633.3

723.8

814.3

904.8

995.3

1085.7

1176.2

1266.7

1357.2

450

229.0

343.5

458.0

572.6

687.1

801.6

916.1

1030.6

1145.1

1259.6

1374.1

1488.6

1603.2

1717.7

500

282.7

424.1

565.5

706.9

848.2

989.6

1131.0

1272.3

1413.7

1555.1

1696.5

1837.8

1979.2

2120.6,

600

407.1

610.7

814.3

1017.9

1221.4

1425.0

1628.6

1832.2

2035.7

2239.3

2442.9

2646.5

2850.0

3053.6

管径(DN)

流速推荐值m/s

20

25

32

40

50

65

80

100

125

150

200

250

300

350

400

闭式系统

0.5-0.6

0.6-0.7

0.7-0.9

0.8-1

0.9-1.2

1.1-1.4

1.2-1.6

1.3-1.8

1.5-2.0

1.6-2.2

1.8-2.5

1.8-2.6

1.9-2.9

1.6-2.5

1.8-2.6

开式系统

0.4-0.5

0.5-0.6

0.6-0.8

0.7-0.9

0.8-1.0

0.9-1.2

1.1-1.4

1.2-1.6

1.4-1.8

1.5-2.0

1.6-2.3

1.7-2.4

1.7-2.4

1.6-2.1

1.8-2.3