公称通径

外径

公称壁厚 T

DN

NPS

D

Sch10

Sch20

Sch30

STD

Sch40

Sch60

XS

Sch80

Sch

100

Sch

120

Sch

140

Sch

160

XXS

6

1/8

10.3

1.24

–

1.45

1.73

1.73

–

2.41

2.41

–

–

–

–

–

8

1/4

13.7

1.65

–

1.85

2.24

2.24

–

3.02

3.02

–

–

–

–

–

10

3/8

17.1

1.65

–

1.85

2.31

2.31

–

3.20

3.20

–

–

–

–

–

15

1/2

21.3

2.11

–

2.41

2.77

2.77

–

3.73

3.73

–

–

–

4.78

7.47

20

3/4

26.7

2.11

–

2.41

2.87

2.87

–

3.91

3.91

–

–

–

5.56

7.82

25

1

33.4

2.77

– 

2.90 

3.38

3.38

– 

4.55

4.55

–

–

–

6.35

9.09

32

11/4

42.2

2.77

–

2.97

3.56

3.56

–

4.85

4.85

–

–

–

6.35

9.70

40

11/2

48.3

2.77

–

3.18

3.68

3.68

–

5.08

5.08

–

–

–

7.14

10.15

50

2

60.3

2.77

–

3.18

3.91

3.91

–

5.54

5.54

–

–

–

8.74

11.07

65

21/2

73.0

3.05

–

4.78

5.16

5.16

–

7.01

7.01

–

–

–

9.53

14.02

80

3

88.9

3.05

–

4.78

5.49

5.49

–

7.62

7.62

–

–

–

11.13

15.24

90

31/2

101.6

3.05

–

4.78

5.74

5.74

–

8.08

8.08

–

–

–

–

–

100

4

114.3

3.05

–

4.78

6.02

6.02

–

8.56

8.56

–

11.13

–

13.49

17.12

125

5

141.3

3.40

–

–

6.55

6.55

–

9.53

9.53

–

12.70

–

15.88

19.05

150

6

168.3

3.40

–

–

7.11

7.11

–

10.97

10.97

–

14.27

–

18.26

21.95

200

8

219.1

3.76

6.35

7.04

8.18

8.18

10.31

12.70

12.7

15.09

18.26

20.62

23.01

22.23

250

10

273.0

4.19

6.35

7.80

9.27

9.27

12.70

12.70

15.09

18.26

21.44

25.40

28.58

25.40

300

12

323.9

4.57

6.35

8.38

9.53

10.31

14.27

12.70

17.48

21.44

25.40

28.58

33.32

25.40

350

14

355.6

6.35

7.92

9.53

9.53

11.13

15.09

12.70

19.05

23.83

27.79

31.75

35.71

–

400

16

406.4

6.35

7.92

9.53

9.53

12.70

16.66

12.70

21.44

26.19

30.96

36.53

40.49

–

450

18

457.0

6.35

7.92

11.13

9.53

14.27

19.05

12.70

23.83

29.36

34.93

39.67

45.24

–

500

20

508

6.35

9.53

12.70

9.53

15.09

20.62

12.70

26.19

32.54

38.10

44.45

50.01

–

550

22

559

6.35

9.53

12.70

9.53

–

22.23

12.70

28.56

34.93

41.28

47.63

53.98

–

600

24

610

6.35

9.53

14.27

9.53

17.48

24.61

12.70

30.96

38.89

46.02

52.37

59.54

–

650

26

660

7.92

12.70

–

9.53

–

–

12.70

–

–

–

–

–

–

700

28

711

7.92

12.70

15.88

9.53

–

–

12.70

–

–

–

–

–

–

750

30

762

7.92

12.70

15.88

9.53

–

–

12.70

–

–

–

–

–

–

800

32

813

7.92

12.70

15.88

9.53

17.48

–

12.70

–

–

–

–

–

–

850

34

864

7.92

12.70

15.88

9.53

17.48

–

12.70

–

–

–

–

–

–

900

36

914

7.92

12.70

15.88

9.53

19.05

–

12.70

–

–

–

–

–

–

950

38

965

–

–

–

9.53

–

–

12.70

–

–

–

–

–

–

1000

40

1016

–

–

–

9.53

–

–

12.70

–

–

–

–

–

–

1050

42

1067

–

–

–

9.53

–

–

12.70

–

–

–

–

–

–

1100

44

1118

–

–

–

9.53

–

–

12.70

–

–

–

–

–

–

1150

46

1168

–

–

–

9.53

–

–

12.70

–

–

–

–

–

–

1200

48

1219

–

–

–

9.53

–

–

12.70

–

–

–

–

–

–