常用公称压力下管道壁厚选用表1

常用公称压力下管道壁厚选用表

无缝碳钢管壁厚 mm 材料 PN MPa ≤1.6 2.5 4.0 6.4 10.0 16.0 20.0 4.0T ≤1.6 2.5 4.0 6.4 10.0 16.0 20.0 4.0T ≤1.6 2.5 4.0 6.4 10.0 16.0 20.0 10 2.5 2.5 2.5 3 3 4 4 3.5 2.5 2.5 2.5 3 3 4 4 3.5 2.5 2.5 2.5 2.5 3 3.5 3.5 15 3 3 3 3 3.5 4.5 4.5 4 3 3 3 3 3.5 4.5 4.5 4 2.5 2.5 2.5 3 3 3.5 4 20 3 3 3 3 3.5 5 5 4 3 3 3 3 4 5 5 4 2.5 2.5 2.5 3 3.5 4 4.5 25 3 3 3 3.5 4 5 6 4.5 3 3 3 3.5 4 5 6 4.5 3 3 3 3 3.5 4.5 5 32 3 3 3 3.5 4.5 6 6 5 3 3 3 4 4.5 6 7 5 3 3 3 3.5 4 5 5.5 40 3.5 3.5 3.5 3.5 4.5 6 7 5 3.5 3.5 3.5 4 5 7 8 5 3 3 3 3.5 4 5 6 50 3.5 3.5 3.5 4 5 7 8 5.5 3.5 3.5 3.5 4.5 5.5 8 9 5.5 3 3 3 3.5 4.5 6 7 65 4 4 4 4.5 6 8 9 4 4 4 5 7 9 11 3.5 3.5 3.5 4 5 7 8 80 4 4 4 5 7 9 11 4 4 4.5 5.5 8 10 12 3.5 3.5 3.5 4.5 6 8 9 DN 100 125 4 4 4 4 4.5 5 6 7 8 9 11 13 13 15 4 4 4 5 5 5.5 7 8 9 10 12 15 15 18 3.5 3.5 3.5 3.5 4 4.5 5 6 7 8 9 11 11 13 150 4.5 4.5 5.5 8 10 15 18 4.5 4.5 6 9 12 18 22 4 4 5 7 9 12 15 200 5 5 7 9 13 19 22 5.5 5.5 8 11 15 22 26 4.5 4.5 6 8 11 16 19 250 6 6 8 11 15 24 28 7 7 9 13 18 28 34 5 5 7 9 13 19 24 300 7 7 9 12 18 26 32 7 7 10 14 22 32 38 5.5 5.5 8 11 15 22 26 350 7 7 10 14 20 30 36 8 8 11 16 24 36 6 6 8 12 17 25 30 400 8 8 11 16 22 34 8 9 12 18 26 40 6 7 9 13 19 28 450 8 8 12 17 8 9 14 20 6 7 10 14 500 8 9 13 19 8 10 15 22 6 8 11 16 600 9 10 15 22 9 12 18 26 7 9 12 18 20 12CrMo 15CrMo 12Cr1MoV 10 Cr5Mo 16Mn 15MnV

无缝不锈钢管壁厚 mm 材料 PN MPa ≤1.0 1.6 2.5 1Cr18Ni9Ti 含Mo不锈钢 4.0 6.4 4.0T 10 2 2 2 2 2.5 3 15 2 2.5 2.5 2.5 2.5 3.5 20 2 2.5 2.5 2.5 2.5 3.5 25 2.5 2.5 2.5 2.5 3 4 32 2.5 2.5 2.5 2.5 3 4 40 2.5 2.5 2.5 2.5 3 4 DN 50 65 80 100 125 2.5 2.5 2.5 3 3 3 3 3 3 3 3 3 3 3.5 3.5 3 3 3.5 4 4.5 3.5 4 4.5 5 6 4.5 150 3.5 3.5 4 5 7 200 3.5 3.5 4.5 6 8 250 3.5 4 5 7 10 300 4 4.5 6 8 11 350 4 5 6 9 13 400 4.5 5 7 10 14 450 500 600 焊接钢管壁厚 mm

材料 PN MPa 0.25 焊接碳钢管 （Q235A20） DN 200 5 250 5 5 5 6 8 3 3 3.5 4.5 6 300 5 6 6 7 9 3 3.5 4 5 7 350 5 6 6 7 9 3 3.5 4.5 6 8 400 5 6 6 8 10 3.5 3.5 4.5 6 9 450 5 6 7 8 11 3.5 4 5 7 9 500 5 6 7 9 12 3.5 4 5.5 7 10 600 6 7 8 10 13 4 4.5 6 8 12 700 6 7 8 11 15 4 5 7 9 13 800 6 7 9 12 16 4 5 7 10 15 900 6 7 9 13 4.5 6 8 1000 6 8 10 14 4.5 6 1100 6 8 11 15 1200 7 8 11 16 1400 7 9 12 1600 7 10 0.6 5 1.0 5 1.6 6 2.5 7 0.25 3 0.6 3 1.0 3.5 1.6 4 2.5 5 焊接不锈钢管