常用公称压力下管道壁厚选用表

无缝碳钢管壁厚 mm材料PNDNMpa101520253240506580100125150200250300350400450500600≤1.62.533333.53.544444.5567788892.52.533333.53.544444.55677889102042.533333.53.5444.555.5789101112131512CrMo6.43333.53.53.544.5567891112141617192215CrMo1033.53.544.54.55678910131518202212Cr1MoV1644.5556678911131519242630342044.556678911131518222832364.0T4.5444.5555.5≤1.62.533333.53.544.5444.55.577888892.52.533333.53.544.5454.55.57789991242.533333.53.544.555.5689101112141518106.43333.5444.5567891113141618202226Cr5Mo1033.5444.555.5789101215182224261644.55567891012151822283236402044.55678911121518222634384.0T3.5444.5555.5≤1.62.52.52.533333.53.53.53.544.555.5666672.52.52.52.533333.53.53.53.544.555.56778916Mn42.52.52.533333.53.544.556788910111215MnV6.42.53333.53.53.544.55678911121314161810333.53.5444.5567891113151719163.53.544.555678911121619222528203.544.555.5678911131519242630无缝不锈钢管壁厚 mm材料PNDNMpa1015202532405065801001251502002503003504004505006001Cr18Ni9Ti≤1.02222.52.52.52.52.52.5333.53.53.5444.51.622.52.52.52.52.5333333.53.544.5552.522.52.52.52.52.5333.53.53.544.55667422.52.52.52.52.5334.544.556789106.42.52.52.53333.545678101113144.0T33.53.54444.5焊接钢管壁厚 mm材料PNDN焊接碳钢管Q235A20Mpa200250300350400450500600700800900100011001200140016000.2555555556666667770.655666667777888910155666778899101111121.66677889101112131415162.57899101112131516焊接不锈钢管0.2533333.53.53.54444.54.50.6333.53.53.5444.5556613.53.544.54.555.567781.644.55667789102.556789910121315注:1.表中"40T"表示外径加工螺纹的管道,适用于 PN≤4.0 的阀体连接.2.DN≥25 的"大腐蚀余量"的碳钢管的壁厚应按表中数值再增 3mm.3.本指标书记按承受内压计算.4.计算中采纳的许用应力值依次为:120.0MPa 100.0MPa 150.0MPa 120.0MPa5.焊接钢管采纳螺旋缝电焊钢管时,最小厚度为 6mm,系列应按产品标准.6.本表摘自化工工艺配管设计中心站编制的设计规定的<<管道等级及材料选用表>>