公称压力(MPa)管道壁厚对照表

1、Word资料（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PNMPaDN1015202532405065801001251502002503003504004505006001.62.533333.53.544444.5567788892.52.533323.53.544444.5567788910204.02.533333.53.5444.555.5789101112131512CrMo6.43333.53.53.544.5567891112141617192215CrMo10.033.53.544.54.55678910131518202212Cr1MoV16

2、.044.55566789111315192426303420.044.556678911131518222832364.0T3.5444.5555.51.62.533333.53.544.5444.55.577888892.52.533333.53.544.5454.55.57789910124.02.533333.53.544.555.568910111214151810Cr5Mo6.43333.5444.555.5789111314161820222610.033.5444.555.57891012151822242616.044.555678910121518222832364020.

3、044.55678911121518222634384.0T3.5444.5555.51.62.52.52.533333.53.53.53.544.555.5666672.52.52.52.533333.53.53.53.544.555.56778916Mn4.02.52.52.533333.53.544.55678891011126.42.53333.53.53.544.55678911121314161815MnV10.0333.53.5444.556789111315171916.03.53.544.55567891112161922252820.03.544.555.567891113

4、1519242630材料PNMPaDN1015202532405065801001251502002503003504004505006001Cr18Ni9Ti含Mo不锈钢1.02222.52.52.52.52.52.5333.53.53.5444.51.622.52.52.52.52.5333333.53.544.5552.522.52.52.52.52.53333.53.544.556674.022.52.52.52.52.5333.544.556789106.42.52.52.53333.544.55678101113144.0T33.53.54444.5（二）无缝不锈钢管壁厚mm三）焊

5、接钢管壁厚mm材料PNMPaDN20025030035040045050060070080090010001100120014001600焊接碳钢管（Q235A20）0.2555555556666667770.6556666677778889101.055666778899101111121.66677889101112131415162.57899101112131516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

6、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S0Do/6时，直管的计算壁厚为：SO=PDO/（2ot+2PY）直管的选用壁厚为：S=S0+C式中SO直管的计算壁厚，mm;P设计压力，MPa;D0直管外径，mm;Qt设计温度下直管材料的许用应力，MPa;一一焊缝系数，对无缝钢管，二】；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;丫一一温度修正系数，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

7、。即:Sch=P/otx1000ANSIB36.10壁厚等级：Sch10、Sch20、Sch30、Sch40、Sch60、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；表示英制管壁厚系列：Sch.20一全称：Schedule20Sch.10s-带s的系列为不锈钢专用，碳钢不用。举个例子：2sch.10s表示2”接管的壁厚为2.9mm,材质为不锈钢；2sch.40表示2”接管的壁厚为4.0mm。3）是以管子重量表示管壁厚

8、度,它将管子壁厚分为三种：a.标准重量管，以STD表示b加厚管，以XS表示c.特厚管，以XXS表示。对于DNw250mm的管子，Sch40相当于STD,DN200mm的管子，Sch80相当于XS。钢管壁厚的分级，在不同标准中所表示的方法也各不相同。ANSIB36.10和JIS标准中的管子表号为；Schl0、20、30、40、60、80、100、120、140、160。ANSIB36.19中的不锈钢管管子表号为：5S、10S、40S、80S。管表号(Sch.)并不是壁厚，是壁厚系列。实际的壁厚，同一管径，在不同的管子表号中其厚度各异。不同管子表号的管壁厚度，在美国和日本是应用计算承受内压薄壁管厚

9、度的Barlow公式计算并考虑了腐蚀裕量和螺纹深度及壁厚负偏差-12.5%之后确定的，如公式(1-2-2)和(1-2-3)所示。tB=D0P/26t(1-2-2)t=D0/2(1-0.125)xP/6t+2.54(1-2-3)式中tBt分别表示理论和计算壁厚，mmD0管夕卜径，mmP设计压力，MPaot在设计温度下材料的许用压力，MPa计算壁厚径圆整后才是实际的壁厚。如果已知钢管的管子表号，可根据式(1-2-1)计算出该钢管所能适应的设计压力，即P=Sch.xot/1000(1-2-4)例如，库存Sch40,碳素钢20无缝钢管，当设计温度为350oC时给钢管所能适应设计压力为：P=40 x92

10、/1000=3.68MPa中国石化总公司标准SHJ405规定了无缝钢管的壁厚系列并Sch.5S，Sch.10，Sch.10s,Sch.20,Sch.20s,Sch.30,Sch.40,Sch。40s,Sch.60,Sch.80,Sch.100,Sch.120,Sch.140,Sch。160,如表1-2-9所示。2以管子重量表示管壁厚度的壁厚系列美国MSS和ANSI规定的以管子重量表示壁厚方法，将管子壁厚分为；种：(1)标准重量管以STD表示；加厚管以XS表示；特厚管以XXS表示。DN250mm的管子，Sch40相当于STD管。DN200mm的管子，Sch80相当于XS管。常用钢材的化学成分和机

11、械性能钢材类别序号钢号标准号化学成分碳C锰Mn硅Si铬Cr镍Ni钼Mo钒V钛Ti钢板1A3YB175-632A3RYB536-690.220.400.650.120.30310MnRYB536-690.201.201.600.200.600.040.12415MnVRYB536-690.181.201.600.200.600.040.10509Mn2VRYB536-690.121.401.800.200.50620gGB713-720.160.240.350.650.150.305(C%-0.02)0.80722gGB713-720.190.260.700.900.170.3780Cr18Ni

12、9TiYB542-700.082.001.0017.019.08.010.591Cr18Ni9TiYB542-700.1212.001.0017.019.08.010.50.300.801000Cr19Ni10YB542-700.032.001.0018.020.08.012.018.025.0110Cr17Ni13Mo2TiYB542-700.082.000.8016.018.012.014.02.03.01200Cr17Ni14Mo2YB542-700.032.001.0016.018.012.016.0钢管13A3YB231-701410YB231-700.070.140.350.650

13、.170.370.150.251520YB231-700.170.240.350.650.170.350.250.251616MnYB231-700.120.201.201.600.200.60钢材类别序号钢号标准号化学成分机械性能（不小于）其它硫S磷P抗拉强度abkg/屈服点askg/延伸率6s%冲击值abkg-m/备注不大1A3YB175-6338472426S4203824267.06162A3RYB536-690.0450.0403823266.5S1726523521616310MnRYB536-690.0450.0405033206.30S1726544018616415MnVRY

14、B536-690.0450.0405238176.0S17263.5钢板509Mn2VRYB536-690.0400.040503521(-70S520412526616620gGB713-720.0450.0404124256.0S1725722gGB713-720.0450.0404327246.0S66080Cr18Ni9TiYB542-700.0200.035553891Cr18Ni9TiYB542-700.0200.03555381000Cr19Ni10YB542-700.0200.0355040110Cr17Ni13Mo2TiYB542-700.0200.03550451200Cr

15、17Ni14Mo2YB542-700.0200.0355045钢管13A3YB231-700.0550.0453824221410YB231-700.0400.0353421241520YB231-700.0500.0404025201616MnYB231-700.0500.050523521钢材类别序号钢号标准号化学成分碳C锰Mn硅Si铬Cr镍Ni钼Mo钒V钛Ti钢板1715MnVYB231-700.120.181.200.060.200.600.041.201812CrMoYB237-700.150.400.700.200.400.400.700.400.551915CrMoYB237-7

16、00.120.180.400.700.200.400.801.100.400.5520Cr5MoYB237-700.150.600.504.06.00.500.602112CrMoVYB529-700.080.150.800.120.500.80W0.300.550.400.650.250.352212Cr2MoWVBYB529-700.080.150.450.650.450.751.602.100.500.650.280.420.080.182312Cr3MoVSiTiBYB529-700.090.150.500.800.600.902.503.001.001.200.250.350.220

17、.382412CrMoVYB529-700.080.150.400.700.170.370.901.200.250.350.150.30251Cr18Ni9TiYB804-700.121.01.50.8017.018.09.011.05.8XC%0.8026Cr18Ni13Mo2TiYB804-700.101.02.00.8016.018.012.014.01.82.55.8XC%0.802700Cr18Ni10YB804-700.032.01.0017.019.010.012.02800Cr17Ni13Mo2YB804-700.032.00.220.320.500.800.200.4530Z

18、G20CrMo0.150.250.40.70.170.370.91.20.50.70.20.331ZG20CrMoV0.180.250.40.70.140.370.91.20.50.70.20.332ZG15Cr1Mo1V0.120.200.40.70.170.370.91.20.81.20.20.4钢材类别序号钢号标准号化学成分机械性能（不小于）其它硫S磷P抗拉强度abkg/屈服点askg/延伸率6s%冲击值abkg一m/备注不刁弋于1715MnVYB231-700.0500.0505440181812CrMoYB237-70Cuw0.300.0400.04042252171915CrMoY

19、B237-70Cuw0.300.0400.040452621620Cr5MoYB237-700.0300.035402022122112CrMoVYB529-700.0400.040544017钢板2212Cr2MoWVBYB529-700.0350.0355535182312Cr3MoVSiTiBYB529-700.0350.0356445182412CrMoVYB529-700.0400.04048452626211965纵向横向251Cr18Ni9TiYB804-700.0300.035564026Cr18Ni13Mo2TiYB804-700.0300.03560352700Cr18Ni

20、10YB804-700.0250.03550502800Cr17Ni13Mo2YB804-700.0250.035604029ZG25YB979-670.040.044524204.5钢30ZG20CrMo0.030.034725183管31ZG20CrMoV0.030.03503214332ZG15Cr1Mo1V0.030.035535203.5Word资料英国标准BS137SW8S焊接钢管或BS21M纹钢管金麻直轻外惶席米Sfi黒暂fWallTtiicknemOuiJiOianierer(iilJWeihri.Blackpic|MgM值来米d(*Z5)AECABCAEcABmmirtcltIS11/2!.2.C3上Jl.121.721721.021.021.0C.971.21兀?.4232.63.226.9N.2IT，1?-:.1?b.2&.BL.鹑1.肓：2&12&.23.031.2:;I.2妙2JJ.1站，1132.111-1/4&.21：!.542.il：L9II.i1：!.1l：t1：5110皿；y3.61,576.078.76.67.2Tu.-I7&.10,71氐出帥J咋I.Vu.fl85,TS?.ujjy.u87,日85.1亦1(j,