无缝钢管公称壁厚怎么选择?
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无缝钢管公称壁厚怎么选择?
无缝钢管公称壁厚怎么选择?
无缝钢管公称壁厚怎么选择?
常用公称压力下管道壁厚选用表
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