无缝钢管承压能力和壁厚对照表

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第1页,-共2页 无缝钢管 【2 】 直缝钢管承压才能和壁厚对比表

(一)无缝碳钢管壁厚

材质 PN

MPa DN

10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600

20

≤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 ≤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

16Mn ≤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

直缝钢管壁厚对比表

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 第2页,-共2页 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