公英制管道内外径规格及密封对照表

dnnps壁厚内径壁厚内径壁厚内径壁厚内径壁厚内径 61/810.31.247.821.736.842.415.48 81/413.71.6510.42.249.223.027.66 103/817.11.6513.82.3112.483.210.7 151/221.31.65182.1117.082.7715.763.7313.846.358.6 203/426.71.6523.42.1122.482.8720.963.9118.887.1412.42 25133.41.6530.12.7727.863.3826.644.5524.38.7415.92 3211/442.21.6538.92.7736.663.5635.084.8

公、英制铜管对照表 序号代号公制规格英制规格材料状态最小折弯半径 1ktg-01-00φ3×0.6φ3×0.6tp2m 2ktg-01-00φ4×0.6φ4×0.6tp2m 3ktg-01-00φ5×0.8φ5×0.8tp2m 4ktg-01-00φ6×0.8φ6.35×0.81/4‘tp2m 5ktg-01-00φ10×0.8φ9.52×0.83/8‘tp2m25mm 6ktg-01-00φ12×1.0φ12.7×1.01/2‘tp2m31mm 7ktg-01-00φ16×1.0φ15.88×1.05/8‘tp2m33mm 8ktg-01-00φ19×1.0φ19.05×1.03/4‘tp2m39.5mm 9ktg-01-00φ22×1.0φ22.23×1

英制管螺纹内径外径对照表 尺寸代号每寸牙数大径中径小径建议底孔基准距离牙数 1/82710.2429.4898.736φ8.64.1024.36 1/41813.61612.48711.358φ11.15.7864.10 3/81817.05515.92614.797φ14.56.0964.32 1/21421.22319.77218.321φ17.98.1284.48 3/41426.56825.11723.666φ23.28.6114.75 111.533.22831.46129.694φ29.210.1604.60 1-1/411.541.98540.21838.451φ37.910.6684.83

nominal pipesize inches 标称管英 寸大小 nominal pipesize mm 标称管径 毫米 odinches 外径英寸 odmm 外径毫米 schedule designations ansi/asme 附表标准 wall thickness inches 壁厚度英 寸 wall thickness mm 壁厚毫米 lbs/ft 磅/英尺 kg/m 公斤/米 1/860.40510.310/10s0.0491.240.18630.28 1/860.40510.3std/40/40s0.0681.730.24470.36 1/860.40510.3xs/80/80s0.0952.410.31450.47 1/480.5413.710/10s0.0651.650.32970.49 1/4

三通四通 重量重量 mmin.mmkgmmmmkgkgmm 251983.1196984.75.7 321?1084.62161086.68.6150 401?1155.3230115810.4150 5021256.92501258.211.3150 652?13711.227413715.219150 80314412.32881441825150 100415614.831215622.527.8150 125517321.13461733239.7150 150619129.138219142.552.8300 200822040.544022067.281.4300 2501025764.4514

普通壁厚管 理论质量 （kg/m 加厚壁厚管 理论质量 （kg/m dg61/8″φ10.0*2φ10.0*2.50.46 dg81/4″φ13.5*2.250.62φ13.5*2.750.73 dg103/8″φ17*2.250.82φ17*2.750.97 dg151/2″φ21.25*2.751.25φ21.25*3.251.45 dg203/4″φ26.75*2.751.63φ26.75*3.252.01 dg251″φ33.5*3.252.42φ33.5*42.29 dg3211/4″φ42.25*3.253.13φ42.25*43.78 dg4011/2″φ48*3.53.84φ48*4.254.58 dg502″φ60*3.54.88φ60*4.56.16 dg7021/

基本尺寸大径螺距 每英寸牙 数中径小径牙型高度圆弧尺寸底孔尺寸 外径 英寸mmmmtpimm外螺纹h1rmmmm d=dpd2=d2d3公称内径英寸 r1/161/16＂7.7230.907287.1426.5610.5810.1256.4dn151/24分21.3 r1/81/8＂9.7280.907289.1478.5660.5810.1258.4dn203/426.9 r1/41/4＂13.1571.3371912.30111.4450.8560.18411.2dn25133.7 r3/83/8＂16.6621.3371915.80614.950.8560.18414.75dn321.2542.4 r1/21/2＂20.955

名义尺寸大径螺距 每英寸 牙数中径小径牙型高底孔直径 bammmmtpimm外螺纹h1mm d=dpd2=d2d3 no.14ba10.23110.40.860.720.140.75 no.13ba1.20.25101.61.050.90.150.95 no.12ba1.30.2890.711.130.960.171 no.11ba1.50.3181.931.3151.130.1851.2 no.10ba1.70.3572.571.491.280.211.35 no.9ba1.90.3965.121.6651.430.2351.5 no.8ba2.20.4359.071.941.680.261.8 no.7ba2.50.48

名义尺寸大径螺距 每英寸牙 数中径小径牙型高底孔直径 bammmmtpimm外螺纹h1mm d=dpd2=d2d3 no.14ba10.23110.40.860.720.140.75 no.13ba1.20.25101.61.050.90.150.95 no.12ba1.30.2890.711.130.960.171 no.11ba1.50.3181.931.3151.130.1851.2 no.10ba1.70.3572.571.491.280.211.35 no.9ba1.90.3965.121.6651.430.2351.5 no.8ba2.20.4359.071.941.680.261.8 no.7ba2.50.48

英制螺纹对应公制（mm)底孔直径公制螺纹底孔直径 1/8"3.182.70m1.00.80 5/32"3.973.30m2.01.80 3/16"4.763.80m3.02.50 1/4"6.355.10m4.03.30 5/16"7.946.60m5.04.20 3/8"9.538.00m6.05.00 7/16"11.119.40m7.06.00 1/2"12.7010.70m8.06.80 5/8"15.8813.70m9.07.80 3/4"19.0516.70m10.08.50 7/8"22.2319.50m12.010.30 1"25.4022.40m14.012.00 m16.014.00 m18.015.50 m20.017.50 m22.019.50 m24.

水、气管道常用中英制标准尺寸对照表 把1英寸分成8等分；1/81/43/81/25/83/47/8英寸。相当于通常说的1 分管到7分管,更小的尺寸用1/16、1/32、1/64来表示，单位还是英寸。如果分 母和分子能够约分（如分子是2、4、8、16、32）就应该约分。英寸的表示是在 右上角打上两撇，如1/2"如dn25（25mm，下同）的水管就是英制1"的水管， 也是解放前的8分水管。 dn15的水管就是英制1/2"的水管，也是解放前的4分水管。如dn20的水 管就是英制3/4"的水管，也是解放前的6分水管。 一、尺寸： dn15（4分管）、dn20（6分管）、dn25（1寸管）、dn32（1寸2管）、 dn40（1寸半管）、dn50（2寸管）、dn65（2寸半管）、dn80（3寸管）、

管螺纹每寸牙数大径小径底孔基准距离 1/82710.2428.736φ8.64.102 1/41813.61611.358φ11.15.786 3/81817.05514.797φ14.56.096 1/21421.22318.321φ17.98.128 3/41426.56623.667φ23.28.611 111.533.22829.694φ29.210.160 1-1/411.541.98538.451φ37.910.668 1-1/211.548.05444.520φ43.910.668 批准：审核：

求pvc管道的内外径对照表 管公 称内 径 尺寸美标sch80美标sch40英标bs3505 国标din化 工管 日标jisk 6741 dninch 平均外 径 最小 壁厚 平均外 径 最小壁 厚 外径 最小 壁厚 外 径 最小 壁厚 外径壁厚 103/8"17.151.3182.5 151/2"21.33.721.32.7721.351.7202.3223 203/4"26.73.926.72.8726.751.9252.8263 251"33.44.633.43.3833.552.2323.6323.5 321+1/4"42.24.942.23.5642.252.7403383.5 401+1/2"48.35.148.33.6848.253.1

求pvc管道的内外径对照表 管公 称内 径 尺寸美标sch80美标sch40英标bs3505国标din化 工管 日标jisk 6741 dninch平均外 径 最小 壁厚 平均外 径 最小壁 厚 外径 最小 壁厚 外 径 最小 壁厚 外径壁厚 103/8"17.151.3182.5 151/2"21.33.721.32.7721.351.7202.3223 203/4"26.73.926.72.8726.751.9252.8263 251"33.44.633.43.3833.552.2323.6323.5 321+1/4"42.24.942.23.5642.252.7403383.5 401+1/2"48.35.148.33.6848.25

钢管与塑料管规格实际选用对应表 镀锌钢管塑料管及金属复合管带嵌件的塑料管件 公称直径（dn）公称外径（dn/dn）管件内径×管螺纹 公制英制 151/2〃（四分管）2020×1/2〃 203/4〃（六分管）2525×3/4〃 251〃（一寸管）3232×1〃 321?〃（寸二管）4040×1?〃 401?〃（寸半管）5050×1?〃 502〃(二寸管)6363×2〃 652?〃7575×2?〃 803〃90 1004〃110 1004〃125 1506〃160 2008〃200 2008〃225 25010〃250 30012〃315 35014〃355 40016〃400 45018〃450 50020〃500 60024〃

管公称 内径 尺寸 dninch平均外径最小壁厚平均外径最小壁厚外径最小壁厚外径 103/8"17.151.3 151/2"21.33.721.32.7721.351.720 203/4"26.73.926.72.8726.751.925 251"33.44.633.43.3833.552.232 321+1/4"42.24.942.23.5642.252.740 401+1/2"48.35.148.33.6848.253.150 502"60.35.560.33.9160.353.963 652+1/2"737.1735.1675 803"88.97.688.95.4988.95.790 1004"114.38.6114.36.02

外径壁厚重量 英寸毫米.单位毫米.英寸.公斤/米.磅/英尺. 1/8”10.310s1.240.0490.280.19 1/8”10.3std-401.730.0680.370.25 1/8”10.3xs-802.410.0950.480.32 1/4”13.710s1.650.0650.500.34 1/4”13.7std-402.240.0880.640.43 1/4”13.7xs-803.020.1190.810.55 3/8”17.110s1.650.0650.640.43 3/8”17.1std-402.310.0910.850.57 3/8”17.1xs-803.200.1261.110.75 1/2”21.35s1.0

钢管与塑料管规格实际选用对应表 镀锌钢管塑料管及金属复合管带嵌件的塑料管件 公称直径（dn）公称外径（dn/dn）管件内径×管螺纹 公制英制 151/2〃（四分管）2020×1/2〃 203/4〃（六分管）2525×3/4〃 251〃（一寸管）3232×1〃 321?〃（寸二管）4040×1?〃 401?〃（寸半管）5050×1?〃 502〃(二寸管)6363×2〃 652?〃7575×2?〃 803〃90 1004〃110 1004〃125 1506〃160 2008〃200 2008〃225 25010〃250 30012〃315 35014〃355 40016〃400 45018〃450 50020〃500 60024〃

pvc管径公制、英制对照表

管公称内径尺寸 dninch平均外径最小壁厚平均外径最小壁厚外径最小壁厚外径最小壁厚外径最小壁厚 103/817.151.3182.5 151/221.33.721.32.7721.351.7202.3223 203/426.73.926.72.8726.751.9252.8263 25133.44.633.43.3833.552.2323.6323.5 321.2542.24.942.23.5642.252.7403383.5 401.548.35.148.33.6848.253.1503.7484 50260.35.560.33.9160.353.9634.7604.5 652.5737.1735.16755

管公称内 径 尺寸 dninch平均外径最小壁厚平均外径最小壁厚外径最小壁厚外径最小壁厚外径最小壁厚 103/817.151.3182.5 151/221.33.721.32.7721.351.7202.3223 203/426.73.926.72.8726.751.9252.8263 25133.44.633.43.3833.552.2323.6323.5 321.2542.24.942.23.5642.252.7403383.5 401.548.35.148.33.6848.253.1503.7484 50260.35.560.33.9160.353.9634.7604.5 652.5737.1735.16

２ｂ max 3b max ２ｂ、３ｂ max no.1640.3971.5821.5821.425 no.2560.4541.8721.8721.694 no.3480.5292.1462.1461.941 no.4400.6352.3852.3852.156 no.5400.6352.6972.6972.487 no.6320.7942.8962.8962.642 no.8320.7943.5313.5283.302 no.10241.0583.9623.953.683 no.12241.0584.5974.594.343 1/4201.275.2685.254.976 5/16181.4116.7846.686.411 3/8161.5888.164