1、（2010年）最新公稱壓力（MPa）管道壁厚對照表（一）無縫碳鋼管壁厚m m才料PNDNMPa101520253240506580100125150200250300350400450500600< 1.62.533333.53.544444.5567788892.52.533323.53.544444.5567788910204.02.533333.53.5444.555.5789101112131512CrMo6.43333.53.53.544.5567891112141617192215CrMo10.033.53.544.54.55678910131518202212Cr1MoV1

2、6.044.55566789111315192426303420.044.556678911131518222832364.0T3.5444.5555.552.533333.53.544.5444.55.577888892.52.533333.53.544.5454.55.57789910124.02.533333.53.544.555.568910111214151810Cr5Mo6.43333.5444.555.5789111314161820222610.033.5444.555.57891012151822242616.044.555678910121518222832364020.0

3、44.55678911121518222634384.0T3.5444.5555.5< 1.62.52.52.533333.53.53.53.544.555.5666672.52.52.52.533333.53.53.53.544.555.56778916Mn15MnV4.02.52.52.533333.535 J.44.55678891011126.42.53333.53.53.544.55678911121314161810.0333.53.5444.556789111315171916.03.53.544.55567891112161922252820.03.544.555.567

4、8911131519242630材料PNMPaDN1015202532405065801001251502002503003504004505006001Cr18Ni9Ti含Mo不銹鋼< 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）無縫

5、不銹鋼管壁厚mm（三）焊接鋼管壁厚mm才料PNMPaDN20025030035040045050060070080090010001100120014001600旱接碳鋼管（Q235A2。0.2555555556666667770.6556666677778889101.055666778899101111121.66677889101112131415162.57899101112131516旱接不銹鋼管0.25 33333.53.53.54444.54.50.6333.53.53.5444.555661.03.53.544.54.555.567781.644.55667789102.556

6、789910121315111-5-16翱船金制無聊“鞋寐DN /mm出物/in服 I) /mmG20c加了 GMG60G80G100G120G140W /mmm mi/mmw mi kg* nr1tlf/mmti#/ km”州 /tntnUH k , (jT柳/mmmMt/kRW朝 /mmWiK m 1神 /mmmih，m州/Bunm ot/ k，n)T|03/8U20492250409o0.8M30.8Mn0.H0口割i1.04L(MIS1/2182.5a既2.50.556bll41.38nh?01.2031411.78203/4252.51.393L»2 C1.S642.072

7、71.5!1.71* 32.03TF2$1322.5J. 823ZHi2,7653.33U1.942力4%963.S8(32)3832.59152.91j e3.725.5141<2243.324 5IIS9540P/i451113.53.51'e 11936¥77483.333&95.306.21* 50I51310045力e e6.9918聞6Q4225.523, u7,399.15(6$)2%76J. 5646157.93111.918山28Q389157.38510.361從 161019,481004108IM(10.2610.856IS.W15.9J

8、921.9723.301228.(1W18(125)i .1231401514.2615.04121.7)22.95103a 3332.06M11.08 a soISO6 ：159IM:fi18.9920.10126.2427.79829,7)31.51103S.U3M612U50根16u50.0653.171656.4259.97酗219J31.52841.63I0$1.51126L261575. U1889,222098.152502731G92953912192113a 50241咿3Q0325S62541185.I8M)07. n17129.1221157.&

9、#171;UI7S.H28205.073$。377981.6712108.01IS133. $02。176.072420M2282m 9832_jlOO_俗992.5510102.5913132.4017171.«22219.18林(BO9104.53II127.2215172.0019216.(024269.885W4aBM5309IIS. 6312153.2916202.80263.592。例 It WOt 那僧竹. M工做.uiI件優加MPa 力/MP.l_J45I_02JMil b AM*"Hits-«.M0. “城+AHIUciCIIH.w八A_情G肛U

10、KNi.(iG3O.(H«i W1J訓.G6O*>i., G8Q.(» Jte3( i n fieiM1ilZOt Gd baX-14。八個:IQ-_w. BN mIM 1 HI3H MH3AttA.M un .11I. uftMlIMNMMJ 4Li尸內壓金屬直管的壁厚根據SH 3059-2001石油化工管道設計器材選用通則確定：當S0< Do /6時，直管的計算壁厚為：S0 = P D0/(2 b t +2PY)直管的選用壁厚為：S = S0 + C式中S0 直管的計算壁厚，mmP-設計壓力，MPa；D0 直管外徑，mmbt 設計溫度下直管材料的許用應力，M

11、Pa;一一焊縫系數，對無縫鋼管，=1;S-包括附加裕量在內的直管壁厚，mmC直管壁厚的附加裕量，mmY溫度修正系數，按下表選取。溫度修整系數表鋼管壁厚表示方法有管子表號、鋼管壁厚尺寸和管子重量三種方法1)是以管子表號"Sch"表示壁厚。管子表號是管子設計壓力與設計溫度下材料許用應力的比值乘1000,并經圓整后的數值。即：Sch=P/ b t x 1000ANSI B36.10 壁厚等級：Sch10、Sch20、Sch30、Sch40、Sch60、Sch80、Sch100、Sch120、Sch140、 Sch160十個等級；ANSI B36.19 壁厚等級：Sch5s Sch

12、10s、Sch40s S2)以鋼管壁厚尺寸表示中國、ISO、日本部分鋼管標準采用ch80s四個等級；表示英制管壁厚系列：Sch.20-全稱：Schedule 20Sch.10s-帶s的系列為不銹鋼專用，碳鋼不用。舉個例子：2" sch.10s表示2”接管的壁厚為2.9mm,材質為不銹鋼；2" sch.40表示2”接管的壁厚為4.0mm。3)是以管子重量表示管壁厚度 ，它將管子壁厚分為三種:a.標準重量管，以 STD表不'b加厚管，以XS表示c.特厚管，以XXS表示。對于DNC 250mm的管子，Sch40相當于STD , DN<200mm 的管子，Sch80相

13、當于XS。鋼管壁厚的分級，在不同標準中所表示的方法也各不相同。ANSI B36.10 和 JIS 標準中的管子表號為；Schl0、20、30、40、60、80、100、120、140、160。ANSI B36.19中的不銹鋼管管子表號為：5S、10S、40S、80S。管表號(Sch.)并不是壁厚，是壁厚系列。實際的壁厚，同一管徑，在不同的管子表號中其厚度各異。不同管子表號的管壁厚度，在美國和日本是應用計算承受內壓薄壁管厚度的Barlow公式計算并考慮了腐蝕裕量和螺紋深度及壁厚負偏差-12. 5%之后確定的，如公式(1-2-2)和(1-2-3)所示。tB=D0P/2 t> (1-2-2)t

14、=D0/2 (1-0.125) >P/冏+2.54(1-2-3)式中tB t 分別表示理論和計算壁厚，mmD0管外徑，mmP設計壓力，MPa0t在設計溫度下材料的許用壓力，MPa計算壁厚徑圓整后才是實際的壁厚。如果已知鋼管的管子表號，可根據式(1-2-1)計算出該鋼管所能適應的設計壓力，即P=Sch.*t/1000 (1-2-4)例如，庫存Sch40,碳素鋼20無縫鋼管，當設計溫度為350oC時給鋼管所能適應 設計壓力為：P=40 X92/1000=3.68 MPa中國石化總公司標準 SHJ405規定了無縫鋼管的壁厚系列并Sch. 5s，Sch. 10,Sch. 10s, Sch. 20

15、, 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國MSS和ANSI規定的以管子重量表示壁厚方法，將管子壁厚分為；種：(1)標準重量管以 STD表示；(2)加厚管以XS表示；特厚管以XXS表示。<DN250mm 的管子，Sch40相當于STD管。<DN200mm的管子，Sch80相當于XS管。常用鋼材的化學成分和機械性能卜材類孫序號鋼 號標準號化學成分碳C鎰Mn硅Si銘Cr銀Ni鋁M

16、o帆V鈦Ti1A3YB175- 632A3RYB536- 690.220.400.650.120.30310MnRYB536- 690.201.201.600.200.600.04 0.12荻415MnVRYB536- 690.181.201.600.200.600.04 0.10509Mn2VRYB536- 690.121.401.800.200.50620gGB713- 720.16 0.240.350.650.150.305(C%-0.02)0.80722gGB713- 720.19 0.260.70 0.900.17 0.3780Cr18Ni9TiYB542- 700.082.001.

17、0017.0 19.08.0 10.591Cr18Ni9TiYB542- 700.1212.001.0017.0 19.08.0 10.50.30 0.801000Cr19Ni10YB542- 700.032.001.0018.0 20.08.0 12.018.0 25.011 0Cr17Ni13Mo2TiYB542- 700.082.000.8016.0 18.012.0 14.02.03.01200Cr17Ni14Mo2YB542 700.032.001.0016.0 18.012.0 16.013A3YB231- 701410YB231- 700.07 0.140.35 0.650.17

18、 0.370.150.25卜1520YB231- 700.17 0.240.35 0.650.17 0.350.250.251616MnYB231- 700.12 0.201.20 1.600.20 0.60才卜序號鋼 號標準號化學成分機械性能（不小于）其它硫S磷P抗拉強度o bkg/屈服點0- skg/延伸率S s%沖擊值a bkg m/備注不子:于1A3YB175- 6338 472426S4 203824267.06162A3RYB536- 690.0450.0403823266.5S17 26523521616310MnRYB536- 690.0450.0405033206.30S17

19、 26544018616k415MnVRYB536- 690.0450.0405238176.0S17 263.5509Mn2VRYB536- 690.0400.040503521(70 C)S5 20412526616620gGB713- 720.0450.0404124256.0S17 25722gGB713- 720.0450.0404327246.0S66080Cr18Ni9TiYB542- 700.0200.035553891Cr18Ni9TiYB542- 700.0200.03555381000Cr19Ni10YB542- 700.0200.0355040110Cr17Ni13Mo

20、2TiYB542- 700.0200.03550451200Cr17Ni14Mo2YB542 700.0200.035504513A3YB231-700.0550.0453824221410YB231-700.0400.035342124卜1520YB231-700.0500.0404025201616MnYB231-700.0500.050523521卜才卜序號鋼 號標準號化學成分碳C鎰Mn硅Si銘Cr銀Ni鋁Mo帆V鈦Ti1715MnVYB231-700.12 0.181.200.060.20 0.600.041.201812CrMoYB237- 70<0.150.400.700.2

21、0 0.400.40 0.700.400.551915CrMoYB237- 700.12 0.180.400.700.20 0.400.80 1.100.400.5520Cr5MoYB237- 70<0.15<0.60<0.504.0 6.00.500.602112CrMoVYB529- 700.08 0.150.80 0.120.50 0.80W0.300.550.400.650.250.35k2212Cr2MoWVBYB529- 700.08 0.150.450.650.45 0.751.60 2.100.500.650.280.420.080.182312Cr3MoVS

22、iTiBYB529- 700.09 0.150.500.800.60 0.902.50 3.001.001.200.250.350.22 0.382412CrMoVYB529- 700.08 0.150.400.700.17 0.370.90 1.200.250.350.150.30251Cr18Ni9TiYB804- 70<0.121.01.5<0.8017.0 18.09.0 11.05.8 X C%0.8026Cr18Ni13Mo2TiYB804- 70<0.101.02.0<0.8016.0 18.012.0 14.01.82.55.8 X C%0.802700

23、Cr18Ni10YB804 70<0.03< 2.0<1.0017.0 -19.010.0 12.02800Cr17Ni13Mo2YB804 70<0.03< 2.0<1.0016.0 -18.012.0 14.01.8，-2.529ZG25YB979-67 >-0.220.320.502800.20 -0.4530ZG20CrMo0.15 -0.250.4270.17 一-0.370.9 /-1.20.5，-0.70.2-0.3卜31ZG20CrMoV0.18 -0.250.4270.14 -0.370.9 /-1.20.5，-0.70.2-0.33

24、2ZG15Cr1Mo1V0.12 -0.200.4270.17 一-0.370.9 /-1.20.8-1.20.2-0.4化學成分%機械性能（不小于）才卜序號鋼 號標準號其它硫S磷P抗拉強度a b屈服點6 S延伸率S s沖擊值a b備注不大于kg/kg/%kg m/1715MnVYB231- 700.0500.0505440181812CrMoYB237 70Cu< 0.300.0400.04042252171915CrMoYB237 70Cu< 0.300.0400.040452621620Cr5MoYB237 700.0300.035402022122112CrMoVYB529

25、- 700.0400.040544017k2212Cr2MoWVBYB529- 700.0350.0355535182312Cr3MoVSiTiBYB529- 700.0350.0356445182412CrMoVYB529- 700.0400.04048452626211965縱向橫向251Cr18Ni9TiYB804 700.0300.035564026Cr18Ni13Mo2TiYB804 700.0300.03560352700Cr18Ni10YB804 700.0250.03550502800Cr17Ni13Mo2YB804 700.0250.035604029ZG25YB979-67

26、0.040.044524204.530ZG20CrMo0.030.034725183卜31ZG20CrMoV0.030.03503214332ZG15Cr1Mo1V0.030.035535203.5英國標準BS13781985焊接鋼管或BS21螺紋鋼管公稱五徑壁耳（電米）外徑（在米）£ft （黑管）1Nominal Siazc Wall ThicknessOutsidcDianieicr （mm JWeight （Black piq最大Max最小Min參考侑名米 mm英寸（25） inchABCABCABCAB151/22.02.63.221.421. 721.721.021.021

27、.00.9171.21203/42.32.63.226.907 o07 026.426.626.61.381.562513.24.033.834. 234.233.233.433.41.982.41321-1/43.24.042.542.942.941.942. I42.12. 543. 104011/23.24.048.448.848.847.848.048.03. 233. 57502（3.64.560.260.860.859.659.859.84.085.03652-1/23.23.64.576.076.676.675.275.475.45.716. 438033.24.05.088.789.589.587.988. I88.16. 728. 3710043.64.55.4113.