最新公称压力(MPa)管道壁厚对照表.doc

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1、(2019年)最新公称压力（MPa)管道壁厚对照表 （一）无缝碳钢管壁厚                               mm材料PNMPaDN101520253240506580100125150200250300350400450500600 2012CrMo15CrMo12Cr1MoV≤1.62.533333.53.544444.556778889 2.52.533323.53.544444.5567788910 4.02.533333.53.5444.555.57891011121315 6.43333.53.53.544.55678911121416171922 10.

2、033.53.544.54.556789101315182022    16.044.555667891113151924263034    20.044.55667891113151822283236     4.0T3.5444.5555.5              10Cr5Mo≤1.62.533333.53.544.5444.55.57788889 2.52.533333.53.544.5454.55.5778991012 4.02.533333.53.544.555.5689101112141518 6.43333.5444.555.57891113141618202226 10

3、.033.5444.555.578910121518222426    16.044.5556789101215182228323640    20.044.5567891112151822263438      4.0T3.5444.5555.5              16Mn15MnV≤1.62.52.52.533333.53.53.53.544.555.566667 2.52.52.52.533333.53.53.53.544.555.567789 4.02.52.52.533333.53.544.5567889101112 6.42.53333.53.53.544.5567891

4、11213141618 10.0333.53.5444.5567891113151719    16.03.53.544.555678911121619222528    20.03.544.555.5678911131519242630     (二)无缝不锈钢管壁厚                          mm材料PNMPaDN1015202532405065801001251502002503003504004505006001Cr18Ni9Ti含Mo不锈钢≤1.02222.52.52.52.52.52.5333.53.53.5444.5   1.622.52.52.52.5

5、2.5333333.53.544.555   2.522.52.52.52.52.53333.53.544.55667   4.022.52.52.52.52.5333.544.55678910   6.42.52.52.53333.544.5567810111314   4.0T33.53.54444.5             （三）焊接钢管壁厚                           mm材料PNMPaDN20025030035040045050060070080090010001100120014001600焊接碳钢管（Q235A20）0.2555555556666667

6、770.6556666677778889101.05566677889910111112 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SH3059-2001《石油化工管道设计器材选用通则》确定：当S0

7、(2[σ]tΦ+2PY)直管的选用壁厚为：S=S0+C式中S0――直管的计算壁厚，mm；P――设计压力，MPa；D0――直管外径，mm；[σ]t――设计温度下直管材料的许用应力，MPa；Φ――焊缝系数，对无缝钢管，Φ＝1；S――包括附加裕量在内的直管壁厚，mm；C――直管壁厚的附加裕量，mm；Y――温度修正系数，按下表选取。温度修整系数表钢管壁厚表示方法有管子表号、钢管壁厚尺寸和管子重量三种方法1）是以管子表