|
(2010年)最新公称压力（MPa)管道壁厚对照表
（一）无缝碳钢管壁厚
m
m
|
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
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10
Cr5Mo
|
≤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
|
|
|
|
|
|
|
|
