公称压力MPa管道壁厚对照表资料整理.docx

公称压力MPa管道壁厚对照表资料整理.docx

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公称压力MPa管道壁厚对照表资料整理

（xx年）最新公称压力（MPa）管道壁厚对照表

（一）无缝碳钢管壁厚                               mm

材料

PN

MPa

DN

10

15

20

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

20

12CrMo

15CrMo

12Cr1MoV

≤1.6

2.5

3

3

3

3

3.5

3.5

4

4

4

4

4.5

5

6

7

7

8

8

8

9

2.5

2.5

3

3

3

2

3.5

3.5

4

4

4

4

4.5

5

6

7

7

8

8

9

10

4.0

2.5

3

3

3

3

3.5

3.5

4

4

4.5

5

5.5

7

8

9

10

11

12

13

15

6.4

3

3

3

3.5

3.5

3.5

4

4.5

5

6

7

8

9

11

12

14

16

17

19

22

10.0

3

3.5

3.5

4

4.5

4.5

5

6

7

8

9

10

13

15

18

20

22

16.0

4

4.5

5

5

6

6

7

8

9

11

13

15

19

24

26

30

34

20.0

4

4.5

5

6

6

7

8

9

11

13

15

18

22

28

32

36

4.0T

3.5

4

4

4.5

5

5

5.5

10Cr5Mo

≤1.6

2.5

3

3

3

3

3.5

3.5

4

4.5

4

4

4.5

5.5

7

7

8

8

8

8

9

2.5

2.5

3

3

3

3

3.5

3.5

4

4.5

4

5

4.5

5.5

7

7

8

9

9

10

12

4.0

2.5

3

3

3

3

3.5

3.5

4

4.5

5

5.5

6

8

9

10

11

12

14

15

18

6.4

3

3

3

3.5

4

4

4.5

5

5.5

7

8

9

11

13

14

16

18

20

22

26

10.0

3

3.5

4

4

4.5

5

5.5

7

8

9

10

12

15

18

22

24

26

16.0

4

4.5

5

5

6

7

8

9

10

12

15

18

22

28

32

36

40

20.0

4

4.5

5

6

7

8

9

11

12

15

18

22

26

34

38

4.0T

3.5

4

4

4.5

5

5

5.5

16Mn

15MnV

≤1.6

2.5

2.5

2.5

3

3

3

3

3.5

3.5

3.5

3.5

4

4.5

5

5.5

6

6

6

6

7

2.5

2.5

2.5

2.5

3

3

3

3

3.5

3.5

3.5

3.5

4

4.5

5

5.5

6

7

7

8

9

4.0

2.5

2.5

2.5

3

3

3

3

3.5

3.5

4

4.5

5

6

7

8

8

9

10

11

12

6.4

2.5

3

3

3

3.5

3.5

3.5

4

4.5

5

6

7

8

9

11

12

13

14

16

18

10.0

3

3

3.5

3.5

4

4

4.5

5

6

7

8

9

11

13

15

17

19

16.0

3.5

3.5

4

4.5

5

5

6

7

8

9

11

12

16

19

22

25

28

20.0

3.5

4

4.5

5

5.5

6

7

8

9

11

13

15

19

24

26

30

（二）无缝不锈钢管壁厚                          mm

材料

PN

MPa

DN

10

15

20

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

1Cr18Ni9Ti

含Mo不锈钢

≤1.0

2

2

2

2.5

2.5

2.5

2.5

2.5

2.5

3

3

3.5

3.5

3.5

4

4

4.5

1.6

2

2.5

2.5

2.5

2.5

2.5

3

3

3

3

3

3.5

3.5

4

4.5

5

5

2.5

2

2.5

2.5

2.5

2.5

2.5

3

3

3

3.5

3.5

4

4.5

5

6

6

7

4.0

2

2.5

2.5

2.5

2.5

2.5

3

3

3.5

4

4.5

5

6

7

8

9

10

6.4

2.5

2.5

2.5

3

3

3

3.5

4

4.5

5

6

7

8

10

11

13

14

4.0T

3

3.5

3.5

4

4

4

4.5

（三）焊接钢管壁厚                           mm

材料

PN

MPa

DN

200

250

300

350

400

450

500

600

700

800

900

1000

1100

1200

1400

1600

焊接碳钢管

（Q235A20）

0.25

5

5

5

5

5

5

5

6

6

6

6

6

6

7

7

7

0.6

5

5

6

6

6

6

6

7

7

7

7

8

8

8

9

10

1.0

5

5

6

6

6

7

7

8

8

9

9

10

11

11

12

1.6

6

6

7

7

8

8

9

10

11

12

13

14

15

16

2.5

7

8

9

9

10

11

12

13

15

16

焊接不锈钢管

0.25

3

3

3

3

3.5

3.5

3.5

4

4

4

4.5

4.5

0.6

3

3

3.5

3.5

3.5

4

4

4.5

5

5

6

6

1.0

3.5

3.5

4

4.5

4.5

5

5.5

6

7

7

8

1.6

4

4.5

5

6

6

7

7

8

9

10

2.5

5

6

7

8

9

9

10

12

13

15