最新公称压力(mpa)管道壁厚对照表

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1、(2010年)最新公称压力（MPa)管道壁厚对照表（一）无缝碳钢管壁厚mmPNDN材料MPa101520253240506580100125150200250300350400450500600≤1.62.533333.53.544444.5567788892.52.533323.53.544444.5567788910204.02.533333.53.5444.555.5789101112131512CrMo6.43333.53.53.544.5567891112141617192215CrMo10.033.53.544.54.5

2、5678910131518202212Cr1MoV16.044.55566789111315192426303420.044.556678911131518222832364.0T3.5444.5555.5≤1.62.533333.53.544.5444.55.577888892.52.533333.53.544.5454.55.57789910124.02.533333.53.544.555.56891011121415186.43333.5444.555.5789111314161820222610Cr5Mo10.033.544

3、4.555.57891012151822242616.044.555678910121518222832364020.044.55678911121518222634384.0T3.5444.5555.5≤1.62.52.52.533333.53.53.53.544.555.5666672.52.52.52.533333.53.53.53.544.555.5677894.02.52.52.533333.53.544.556788910111216Mn6.42.53333.53.53.544.55678911121314161815M

4、nV10.0333.53.5444.556789111315171916.03.53.544.55567891112161922252820.03.544.555.5678911131519242630(二)无缝不锈钢管壁厚mmPNDN材料MPa101520253240506580100125150200250300350400450500600≤1.02222.52.52.52.52.52.5333.53.53.5444.51.622.52.52.52.52.5333333.53.544.5551Cr18Ni9Ti2.522.52

5、.52.52.52.53333.53.544.55667含Mo不锈钢4.022.52.52.52.52.5333.544.556789106.42.52.52.53333.544.55678101113144.0T33.53.54444.5（三）焊接钢管壁厚mmPNDN材料MPa200250300350400450500600700800900100011001200140016000.2555555556666667770.655666667777888910焊接碳钢管1.05566677889910111112（Q235A20）

6、1.66677889101112131415162.578991011121315160.2533333.53.53.54444.54.50.6333.53.53.5444.55566焊接不锈钢管1.03.53.544.54.555.567781.644.55667789102.556789910121315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、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）是以管子表号"Sch"表示壁厚。管子表号是管子设计压力与设计温度下材料许用应力的比值乘1000,并经圆整后的数值。即:Sch＝P/[σ]t×1000ANSIB36.10壁厚等级：Sch10、Sch20、Sch30、Sch40、Sc

8、h60、Sch80、Sch100、Sch120、Sch140、Sch160十个等级;ANSIB36.19壁厚等级：Sch5s、Sch10s、Sch40s、S2）以钢管壁厚尺寸表示中国、ISO、日本部分钢管标准采用ch80s四个等级;表