（一）无缝碳钢管壁厚 m m材料PNMPaDN101520253240506580100125150200250300350400450500600 2012CrMo15CrMo12Cr1MoV≤1.62。5 33333。5 3。5 44444。5 56778889 2。52。5 33323.53.544444.5567788910 4.02。5 33333。5 3。5 444。5 55。5 7891011121315 6.43333.53.53。5 44。5 5678911121416171922 10。033。5 3。5 44.54.556789101315182022 16.044.555667891113151924263034 20.044。5 5667891113151822283236 4。0T3.5444.5555。5 10Cr5Mo≤1.62.533333.53。5 44。5 444。5 5。5 7788889 2。52.533333。5 3。5 44.5454。5 5.5778991012 4.02。5 33333。5 3.544.555。5 689101112141518 6。43333。5 444。5 55。5 7891113141618202226 10.033。5 444。5 55。5 78910121518222426 16。044。5 556789101215182228323640 20.044。5 567891112151822263438 4。0T3。5 444.5555.5 16Mn15MnV≤1。6 2。5 2.52。5 33333.53。5 3.53.544.555。566667 2。52.52.52。5 33333。5 3。5 3.53。5 44.555.567789 4。02。5 2。5 2。5 33333.53。5 44.5567889101112 6.42.53333。5 3。5 3。5 44.556789111213141618 10。0333。5 3。5 444.5567891113151719 16.03.53。5 44.555678911121619222528 20.03.544.555.5678911131519242630 （二)无缝不锈钢管壁厚 mm材料PNMPaDN1015202532405065801001251502002503003504004505006001Cr18Ni9Ti≤1.02222.52.52。5 2.52.52。5 333。53。53.5444.5 含 Mo 不锈钢1.622。5 2。5 2.52.52。5 333333.53.544.555 2。522。5 2.52.52.52.53333。5 3.544.55667 4。022.52.52.52。5 2.5333。5 44.55678910 6。42.52.52。5 3333。5 44。5 567810111314 4。0T33.53.54444。5 （三）焊接钢管壁厚 mm材料PNMPaDN20025030035040045050060070080090010001100120014001600焊接碳钢管（Q235A20）0.2555555556666667770.6556666677778889101.05566677889910111112 1。6667788910111213141516 2.57899101112131516 焊接不锈钢管0。2533333。53。53。54444.54。5 0.6333.53。53.5444.55566 1。03.53。544。54。555。56778 1。644。5566778910 2。556789910121315 内压金属直管的壁厚根据 SH 3059—2001《石油化工管道设计器材选用通则》确定：当 S0〈 Do /6 时, 直管的计算壁厚为：S0 = P D0/（2［σ］tΦ+2PY）直管...
