材质与壁厚和压力的关系

材质与壁厚和压力的关系材质与壁厚和压力的关系（一）无缝不锈钢管壁厚 DN材料PNMPa10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600≤1.0222 2.5 2.5 2.5 2.5 2.5 2.5 33 3.5 3.5 3.5 44 4.51.62 2.5 2.5 2.5 2.5 2.5 33333 3.5 3.5 4 4.5 552.52 2.5 2.5 2.5 2.5 2.5 333 3.5 3.5 4 4.5 566742 2.5 2.5 2.5 2.5 2.5 33 3.5 4 4.5 56789106.42.5 2.5 2.5 333 3.5 4 4.5 567810 11 13 141Cr18Ni9Ti 含 Mo 不锈钢4.0T3 3.5 3.5 444 4.5（二）无缝碳钢管壁厚 DN材料PNMPa10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600≤1.62.5 3333 3.5 3.5 4444 4.5 567788892.52.5 3332 3.5 3.5 4444 4.5 56778891042.5 3333 3.5 3.5 44 4.5 5 5.5 78910 11 12 13 156.4333 3.5 3.5 3.5 4 4.5 5678911 12 14 16 17 19 22103 3.5 3.5 4 4.5 4.5 5678910 13 15 18 20 22164 4.5 556678911 13 15 19 24 26 30 34204 4.5 56678911 13 15 18 22 28 32 362012CrMo 15CrMo 12Cr1MoV4.0T3.5 44 4.5 55 5.5≤1.62.5 3333 3.5 3.5 4 4.5 44 4.5 5.5 77888892.52.5 3333 3.5 3.5 4 4.5 45 4.5 5.5 7789910 1242.5 3333 3.5 3.5 4 4.5 5 5.5 68910 11 12 14 15 186.4333 3.5 44 4.5 5 5.5 78911 13 14 16 18 20 22 26103 3.5 44 4.5 5 5.5 78910 12 15 18 22 24 26164 4.5 55678910 12 15 18 22 28 32 36 40204 4.5 5678911 12 15 18 22 26 34 3810 Cr5Mo4.0T3.5 44 4.5 55 5.5≤1.62.5 2.5 2.5 3333 3.5 3.5 3.5 3.5 4 4.5 5 5.5 666672.52.5 2.5 2.5 3333 3.5 3.5 3.5 3.5 4 4.5 5 5.5 6778942.5 2.5 2.5 3333 3.5 3.5 4 4.5 56788910 11 126.42.5 333 3.5 3.5 3.5 4 4.5 5678911 12 13 14 16 181033 3.5 3.5 44 4.5 5678911 13 15 17 19163.5 3.5 4 4.5 55678911 12 16 19 22 25 2816Mn 15MnV203.5 4 4.5 5 5.5 678911 13 15 19 24 26 30（三）焊接钢管壁厚 材料PNDNMPa200 250 300 350 400 450 500 600 700 800 900 1000 1100 1200 1400 16000.2555555556666667770.655666667777888910155666778899101111121.6667788910111213141516焊接碳钢管（Q235A20）2.578991011121315160.2533333.5 3.5 3.54444.54.50.6333.5 3.5 3.5444.5556613.5 3.544.5 4.555.567781.644.5566778910焊接不锈钢管2.556789910121315。