公称通径
Nominal Pipe Size

外径
Outside Diameter

公称壁厚T
Norminal Wall Thickness

DN

NPS

D

SGP

SCH5s

SH10s

SCH10

SCH20

SCH30

SCH40s

STD

SCH40

SCH60

SCH80s

XS

SCH80

SCH100

SCH120

SCH140

SCH160

XXS

15
20
25

1/2
3/4
1

21.7
27.2
34.0

2.8
2.8
3.2

1.7
1.7
1.7

2.1
2.1
2.8

---
---
---

---
---
---

---
---
---

2.8
2.9
3.4

2.8
2.9
3.4

2.8
2.9
3.4

---
---
---

3.7
3.9
4.5

3.7
3.9
4.5

3.7
3.9
4.5

---
---
---

---
---
---

---
---
---

4.8
5.6
6.4

7.5
7.8
9.1

32
40
50

11/4
11/2
2

42.7
48.6
60.5

3.5
3.5
3.8

1.7
1.7
1.7

2.8
2.8
2.8

---
---
---

---
---
---

---
---
---

3.6
3.7
3.9

3.6
3.7
3.9

3.6
3.7
3.9

---
---
---

4.9
5.1
5.5

4.9
5.1
5.5

4.9
5.1
5.5

---
---
---

---
---
---

---
---
---

6.4
7.1
8.7

9.7
10.2
11.1

65
80
90

21/2
3
31/2

76.3
89.1
101.6

4.2
4.2
4.2

2.1
2.1
2.1

0
3.0
3.0

---
---
---

---
---
---

---
---
---

5.2
5.5
5.7

5.2
5.5
5.7

5.2
5.5
5.7

---
---
---

7.0
7.6
8.1

7.0
7.6
8.1

7.0
7.6
8.1

---
---
---

---
---
---

---
---
---

9.5
11.1
---

14.0
15.2
---

100
125
150

4
5
6

114.3
139.8
165.2

4.5
4.5
5.0

2.1
2.8
2.8

3.0
3.4
3.4

---
---
---

---
---
---

---
---
---

6.0
6.6
7.1

6.0
6.6
7.1

6.0
6.6
7.1

---
---
---

8.6
9.5
11.0

8.6
9.5
11.0

8.6
9.5
11.0

---
---
---

11.1
12.7
14.3

---
---
---

13.5
15.9
18.2

17.1
19.0
21.9

200
250
300

8
10
12

216.3
267.4
318.5

5.8
6.6
6.9

2.8
3.4
4.0

4.0
4.0
4.5

---
---
---

6.4
6.4
6.4

7.0
7.8
8.4

8.2
9.3
9.5

8.2
9.3
9.5

8.2
9.3
10.3

10.3
12.7
14.3

12.7
12.7
12.7

12.7
12.7
12.7

12.7
15.1
17.4

15.1
18.3
21.4

18.2
21.4
25.4

20.6
25.4
28.6

23.0
28.6
33.3

22.2
25.4
25.4

350
400
450

14
16
18

355.6
406.4
457.2

7.9
7.9
7.9

4.0
4.2
4.2

4.8
4.8
4.8

6.4
6.4
6.4

7.9
7.9
7.9

9.5
9.5
11.1

9.5
9.5
9.5

9.5
9.5
9.5

11.1
12.7
14.3

15.1
16.7
19.0

---
---
---

12.7
12.7
12.7

19.0
21.4
23.8

23.8
26.2
29.4

27.8
30.9
34.9

31.8
36.5
39.7

35.7
40.5
45.2

---
---
---

500
550
600

20
22
24

508.0
558.8
609.6

7.9
---
---

4.8
4.8
5.5

5.5
5.5
6.4

6.4
6.4
6.4

9.5
9.5
9.5

12.7
12.7
14.3

9.5
9.5
9.5

9.5
9.5
9.5

15.1
---
17.5

20.6
22.2
24.6

---
---
---

12.7
12.7
12.7

26.2
28.6
31.0

32.5
34.9
38.9

38.1
41.3
46.0

44.4
47.6
52.4

50.0
54.0
59.5

---
---
---

650
700
750

26
28
30

660.4
711.2
762.0

---
---
---

---
---
6.4

---
---
7.9

7.9
7.9
7.9

12.7
12.7
12.7

---
15.9
15.9

---
---
9.5

9.5
9.5
9.5

---
---
---

---
---
---

---
---
---

12.7
12.7
12.7

---
---
---

---
---
---

---
---
---

---
---
---

---
---
---

---
---
---

800
850
900

32
34
36

812.8
863.6
914.4

---
---
---

---
---
---

---
---
---

7.9
7.9
7.9

12.7
12.7
12.7

15.9
15.9
15.9

---
---
---

9.5
9.5
9.5

17.5
17.5
19.0

---
---
---

---
---
---

12.7
12.7
12.7

---
---
---

---
---
---

---
---
---