(2010年)最新公称压力(MPa)管道壁厚对照表.doc

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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                               mm材料PNMPaDN1015202532405065801001251502002503003504004505006002012CrMo15CrMo12Cr1MoV≤1.62.533333.53.544444.5567788892.52.533323.53.544444.55677889104.02.533333.53.5444.555.578910111213156.43333.53.53.544.55678

2、91112141617192210.033.53.544.54.55678910131518202216.044.55566789111315192426303420.044.556678911131518222832364.0T3.5444.5555.510Cr5Mo≤1.62.533333.53.544.5444.55.577888892.52.533333.53.544.5454.55.57789910124.02.533333.53.544.555.56891011121415186.43333.5444.555.57891113141

3、61820222610.033.5444.555.57891012151822242616.044.555678910121518222832364020.044.55678911121518222634384.0T3.5444.5555.516Mn15MnV≤1.62.52.52.533333.53.53.53.544.555.5666672.52.52.52.533333.53.53.53.544.555.5677894.02.52.52.533333.53.544.55678891011126.42.53333.53.53.544.556

4、78911121314161810.0333.53.5444.556789111315171916.03.53.544.55567891112161922252820.03.544.555.5678911131519242630(二)无缝不锈钢管壁厚                          mm材料PNMPaDN1015202532405065801001251502002503003504004505006001Cr18Ni9Ti含Mo不锈钢≤1.02222.52.52.52.52.52.5333.53.53.5444.51.622

5、.52.52.52.52.5333333.53.544.5552.522.52.52.52.52.53333.53.544.556674.022.52.52.52.52.5333.544.556789106.42.52.52.53333.544.55678101113144.0T33.53.54444.5（三）焊接钢管壁厚                           mm材料PNMPaDN20025030035040045050060070080090010001100120014001600焊接碳钢管（Q235A20）0.255555

6、5556666667770.6556666677778889101.055666778899101111121.66677889101112131415162.57899101112131516焊接不锈钢管0.2533333.53.53.54444.54.50.6333.53.53.5444.555661.03.53.544.54.555.567781.644.55667789102.556789910121315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、/(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×100

8、0ANSIB36.10壁厚等级：Sch10、Sch20、Sch30、Sch40、Sch60、Sch80、Sch100、Sch120、Sch140、Sc