(21年)最新公称压力(mpa)管道壁厚对照表

1、2021年最新公称压力MPat道壁厚对照表一无缝碳钢管壁厚？?？?mm材料PNMPaDN101520253240506580100125150200250300350400450500600<1.62.533333.53.544444.5567788892.52.533323.53.544444.5567788910204.02.533333.53.5444.555.5789101112131512CrMo6.43333.53.53.544.5567891112141617192215CrMo12Cr1MoV10.033.53.544.54.55678910131518202216.04

2、4.55566789111315192426303420.044.556678911131518222832364.0T3.5444.5555.5<1.62.533333.53.544.5444.55.577888892.52.533333.53.544.5454.55.57789910124.02.533333.53.544.555.568910111214151810Cr5Mo6.43333.5444.555.5789111314161820222610.033.5444.555.57891012151822242616.044.555678910121518222832364020

3、.044.55678911121518222634384.0T3.5444.5555.516Mn<1.62.52.52.533333.53.53.53.544.555.56666715MnV2.52.52.52.533333.53.53.53.544.555.5677894.02.52.52.533333.53.544.55678891011126.42.53333.53.53.544.55678911121314161810.0333.53.5444.556789111315171916.03.53.544.55567891112161922252820.03.544.555.5678

4、911131519242630J1二无缝不锈钢管壁厚？?？?mm材料PNMPaDN1015202532405065801001251502002503003504004505006001Cr18Ni9Ti含Mo不锈钢<1.02222.52.52.52.52.52.5333.53.53.5444.51.622.52.52.52.52.5333333.53.544.5552.522.52.52.52.52.53333.53.544.556674.022.52.52.52.52.5333.544.556789106.42.52.52.53333.544.55678101113144.0T33.

5、53.54444.5三焊接钢管壁厚？?？?mm材料PNMPaDN20025030035040045050060070080090010001100120014001600焊接碳钢管Q235A2.0.2555555556666667770.6556666677778889101.055666778899101111121.66677889101112131415162.57899101112131516焊接不锈钢管0.2533333.53.53.54444.54.50.6333.53.53.5444.555661.03.53.544.54.555.567781.644.55667789102.5

6、56789910121315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那么?确定:当S0<Do/6时,直管的计算壁厚为：S0=PD0/(2(Tt+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(rt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,=1;S-包括附加裕量在内的直管壁厚,mm直管壁厚的附加裕量,mmY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

7、下材料许用应力的比值乘1000,并经圆整后的数值.即：Sch=P/rtX1000ANSIB36.10壁厚等级：Sch10、Sch2RSch30、Sch4RSch6RSch80、Sch10RSch120Sch140Sch160十个等级;ANSIB36.19壁厚等级：Sch5&Sch103Sch40sS2以钢管壁厚尺寸表示？?中国、ISO、日本局部钢管标准采用ch80s四个等级；表示英制管壁厚系列：Sch.20-全称：Schedule20Sch.10s-帮s的系列为不锈钢专用,碳钢不用.举个例子：2"sch.10s表示2接管的壁厚为2.9mm,材质为不锈钢；2"sch.

8、40表示2接管的壁厚为4.0mm.3是以管子重量表示管壁厚度,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DNC250mm的管子,Sch40相当于STD,DN<200mm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

9、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/20(1-2-2)t=D0/2(1-0.125)XP/t+2.54(1-2-3)式中tBt分别表示理论和计算壁厚,mmD0管外径,mmP设计压力,MPa址一一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./</1000(1-2-4)例如,库存Sch40,碳素钢20无缝钢管,当设

10、计温度为3500c时给钢管所能适应设计压力为：P=40X92/100O=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,Sch0160,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;(2)加厚管以XS表示;(3)特厚管以XXS表示.<DN250mm的管子,Sch40相

11、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械性能钢材类别序号钢号标准号化学成分碳C镒Mn硅Si铭Cr银Ni铝Mo帆V钛Ti1A3YB175-632A3RYB536-690.220.400.650.120.30310MnRYB536-690.201.201.600.200.600.040.12415MnVRYB536-690.181.201.600.200.600.040.10钢509Mn2VRYB536-690.121.401.800.200.50板620gGB713-720.160.240.350.650.150.305(C%-0.02)0.8

12、0722gGB713-720.190.260.700.900.170.3780Cr18Ni9TiYB542-700.082.001.0017.019.08.010.591Cr18Ni9TiYB542-700.1212.001.0017.019.08.010.50.300.801000Cr19Ni10YB542-700.032.001.0018.08.018.020.012.025.0110Cr17Ni13Mo2TiYB542-700.082.000.8016.018.012.014.02.03.01200Cr17Ni14Mo2YB542-700.032.001.0016.018.012.016

13、.013A3YB231-70钢1410YB231-700.070.140.350.650.170.370.150.25管1520YB231-700.170.240.350.650.170.350.250.251616MnYB231-700.120.201.201.600.200.60钢化学成分机械性能不小于材类序号钢号标准号其它硫S磷P抗拉强度ob屈服点6S延伸率Ss冲击值ab备注别不大于kg/kg/%kgm/1A3YB175-6338472426S4202A3RYB536-690.0450.0403838242326267.06.5616S1726钢310MnRYB536-690.0450.

14、0405250353321206.30616S1726板415MnVRYB536-690.0450.0405452403818176.0616S1726509Mn2VRYB536-690.0400.0405035213.5(70C)S520620gGB713-720.0450.0404141252426256.0616S1725722gGB713-720.0450.0404327246.0S66080Cr18Ni9TiYB542-700.0200.035553891Cr18Ni9TiYB542-700.0200.03555381000Cr19Ni10YB542-700.0200.0355040

15、110Cr17Ni13Mo2TiYB542-700.0200.03550451200Cr17Ni14Mo2YB542-700.0200.0355045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镒Mn硅Si铭Cr银Ni铝Mo帆V钛Ti钢板1715MnVYB231-700.120.181.200.060.200.600.041.201812CrMoYB237-70<0.1

16、50.400.700.200.400.400.700.400.55材类别号其它硫S磷P抗拉强度obkg/屈服点0-skg/延伸率Ss%冲击值abkgm/备注不大于钢板1715MnVYB231-700.0500.0505440181812CrMoYB237-70Cu<0.300.0400.04042252171915CrMoYB237-70Cu<0.300.0400.040452621620Cr5MoYB237-700.0300.035402022122112CrMoVYB529-700.0400.0405440172212Cr2MoWVBYB529-700.0350.0355535182312Cr3MoVSiTiBYB529-700.0350.0356445182412CrMoVYB529-700.0400.04048452626211965纵向横向251