RF法兰尺寸对照表

DNNPS mm in mm in mm in mm in mm in mm in 凸面2mm 环连接151/290 3.5060.5 2.37535 1.3754-154-0.6210/M141/255/203/4100 3.87570 2.7543 1.68754-154-0.6210/M141/265/251110 4.2579.5 3.1255124-154-0.62120.44M141/2657532 1 1/4120 4.62589 3.5064 2.504-154-0.62130.50M141/2708540 1 1/2130598.5 3.87573 2.8754-154-0.62150.56M141/270855021506120.5 4.7592 3.6254-194-0.75160.62M165/8859565 2 1/21807139.5 5.50105 4.1254-194-0.75180.69M165/8901008031907.50152.5612754-194-0.75190.75M165/89010010042309190.57.50157 6.18758-198-0.88240.94M165/8901001255255102168.501867.31258-228-0.88240.94M203/495110150628011241.59.502168.508-228-0.88261M203/4100115200834513.50298.511.7527010.6258-228-0.8829 1.12M203/4110120250104051636214.2532412.7512-2512-131 1.19M247/81151253001248519432173811512-2512-132 1.25M247/8120135350145352147618.7541316.2512-2912-1.1235 1.38M2711351454001660023.5054021.2547018.5016-2916-1.1237 1.44M271135145450186352557822.755332116-3216-1.2540 1.56M30 1 1/81451605002070027.50635255842320-3220-1.2543 1.69M30 1 1/81601706002481532749.529.5069227.2520-3520-1.3848 1.88M33 1 1/41701856502687034.25806.531.7574929.5024-3524-1.3868 2.69M33 1 1/4210/7002892736.50863.634.0080031.5028-3528-1.3871 2.81M33 1 1/4220/7503098438.75914.436.0085733.7528-3528-1.3875 2.94M33 1 1/4230/80032106041.7597838.5091436.0028-4128-1.6281 3.19M39×3 1 1/2255/85034111143.75102940.5096538.0032-4132-1.6283 3.25M39×3 1 1/2260/90036116846.00108642.75102240.2532-4132-1.6290 3.56M39×3 1 1/2275/95038123848.751149.445.25107342.2532-4132-1.6287 3.44M39×3 1 1/2270/100040128950.751200.247.25112444.2536-4136-1.6290 3.56M39×3 1 1/2275/105042134653.001257.349.50119447.0036-4136-1.6297 3.81M39×3 1 1/2290/110044140355.251314.551.75124549.0040-4140-1.62102 4.00M39×3 1 1/2300/115046145457.251365.353.75129551.0040-4140-1.62103 4.06M39×3 1 1/2305/120048151159.501422.456.00135953.5044-4144-1.62108 4.25M39×3 1 1/2310/125050156861.751479.658.25141055.5044-4844-1.88111 4.38M45×3 1 3/4330/130052162664.00153760.50146157.5044-4844-1.88116 4.56M45×3 1 3/4340/135054168366.25159462.75151159.5044-4844-1.88121 4.75M45×3 1 3/4350/140056174668.75165165.00157562.0048-4848-1.88124 4.88M45×3 1 3/4355/145058180371.001708.267.25162664.0048-4848-1.88129 5.06M45×3 1 3/4365/150060185473.00175969.25167666.0052-4852-1.881325.19M45×31 3/4375/ASME B16.5、B16.47A(MSS SP-44), CLASS 150 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面2mm 环连接151/295 3.7566.7 2.6235 1.384-164-0.62150.56M141/26575203/4120 4.6282.5 3.2543 1.694-194-0.75160.62M165/87590251125 4.8889 3.5051 2.04-194-0.75180.69M165/8759032 1 1/4135 5.2598.5 3.8864 2.504-194-0.75190.75M165/8859540 1 1/2155 6.12114.5 4.5073 2.884-224-0.88210.81M203/490100502165 6.50127 5.092 3.628-198-0.62230.88M165/89010065 2 1/21907.50149 5.88105 4.128-228-0.88261M203/41001158032108.25168.5 6.62127 5.08-228-0.8829 1.12M203/41101201004255102007.88157 6.198-228-0.8832 1.25M203/41151251255280112359.251867.318-228-0.8835 1.38M203/4120135150632012.5027010.622168.5012-2212-0.8837 1.44M203/4120140200838015.033013.027010.6212-2612-142 1.62M247/81401502501044517.50387.515.2532412.7516-2916-1.1248 1.88M2711601703001252020.5045117.7538115.016-3216-1.25512M30 1 1/81701853501458523.0514.520.2541316.2520-3220-1.2554 2.12M30 1 1/81801904001665025.50571.522.5047018.5020-3520-1.3858 2.25M33 1 1/41902054501871028.0628.524.7553321.024-3524-1.3861 2.38M33 1 1/41952105002077530.5068627.058423.024-3524-1.3864 2.50M33 1 1/42052206002491536.081332.069227.2524-4124-1.6270 2.75M39×3 1 1/22302556502697238.25876.334.5074929.5028-4528-1.7579 3.12M42×3 1 5/826028570028103540.7593437.0080031.5028-4528-1.7586 3.38M42×3 1 5/827530075030109243.099739.2585733.7528-4828-1.8892 3.62M45×3 1 3/429032080032114945.251054.141.5091436.0028-5128-2.0099 3.88M48×3 1 7/831034085034120747.50110543.5096538.0032-5132-2.00102 4.00M48×3 1 7/831534590036127050.001168.446.00102240.2532-5432-2.12105 4.12M52×3233036095038116846.001092.243.00102940.5032-4132-1.62108 4.25M39×3 1 1/2310/100040123848.75115645.50108642.7532-4532-1.75114 4.50M42×3 1 5/8330/105042128950.75120747.50113744.7532-4532-1.75119 4.69M42×3 1 5/8340/110044135353.25126449.75119447.0032-4832-1.88124 4.88M45×3 1 3/4355/115046141655.75132152.00124549.0028-5128-2.00129 5.06M48×3 1 7/8370/120048146757.75137254.00130251.2532-5132-2.00133 5.25M48×3 1 7/8380/125050153060.25142956.25135953.5032-5532-2.12140 5.50M52×32400/130052158162.25148058.25141055.5032-5532-2.12145 5.69M52×32410/135054165765.25154961.00146757.7528-6028-2.38152 6.00M56×3 2 1/4435/140056170867.25160063.00151859.7528-6028-2.38154 6.06M56×3 2 1/4440/145058175969.25165165.00157562.0032-6032-2.38159 6.25M56×3 2 1/4450/150060181071.25170267.00162664.0032-6032-2.381646.44M56×32 1/4460/ASME B16.5、B16.47A(MSS SP-44), CLASS 300 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/295 3.7566.7 2.6235 1.384-164-0.62150.56M141/27575203/4120 4.6282.5 3.2543 1.694-194-0.75160.62M165/89090251125 4.8888.9 3.5051 2.04-194-0.75180.69M165/8909032 1 1/4135 5.2598.4 3.8864 2.504-194-0.75210.81M165/8959540 1 1/2155 6.12114.3 4.5073 2.884-224-0.8822.50.88M203/4110110502165 6.50127.0 5.0092 3.628-198-0.7525.5 1.00M165/811011065 2 1/21907.50149.2 5.88105 4.128-228-0.8829 1.12M203/41201208032108.25168.3 6.62127 5.08-228-0.8832 1.25M203/4125125100425510.00200.07.88157 6.198-268-1.0035 1.38M247/8140140125528011.00234.99.251867.318-268-1.0038.5 1.50M247/8145145150632012.50269.910.622168.5012-2612-1.0041.5 1.62M247/8150150200838015.00330.213.0027010.6212-2912-1.1248 1.88M2711701702501044517.50387.315.2532412.7516-3216-1.2554 2.12M30 1 1/81901903001252020.50450.817.7538115.016-3516-1.3857.5 2.25M33 1 1/42052053501458523.00514.320.2541316.2520-3520-1.3860.5 2.38M33 1 1/42102104001665025.50571.522.5047018.5020-3920-1.5063.5 2.50M36×３1 3/82202204501871028.00628.024.7553321.024-3924-1.5067 2.62M36×３ 1 3/82302305002077530.50685.827.0058423.024-4224-1.6270 2.75M39×３ 1 1/22402506002491536.00812.832.0069227.2524-4824-1.8876.5 3.00M45×３ 1 3/42652806502697238.25876.334.5074929.5028-4828-1.8889.0 3.50M45×３ 1 3/430032070028103540.7594037.0080031.5028-5128-2.0095.5 3.75M48×３ 1 7/832034075030109243.0099739.2585733.7528-5528-2.12102.0 4.00M52×３234036080032114945.251054.141.5091436.0028-5528-2.12108.0 4.25M52×３235537585034120747.50110543.5096538.0028-5528-2.12111.5 4.38M52×３236538590036127050.001168.446.00102240.2532-5532-2.12114.5 4.50M52×３237039095038120747.50111844.00103540.5032-4832-1.88124.0 4.88M45×３ 1 3/4370/100040127050.00117546.25109242.7532-5132-2.00130.0 5.12M48×３ 1 7/8385/105042132152.00122648.25114344.7532-5132-2.00133.5 5.25M48×３ 1 7/8395/110044138454.50128350.50120047.0032-5532-2.12134.0 5.50M52×３2405/115046144156.75134052.75125749.0036-5536-2.12146.0 5.75M52×３2425/120048151159.501403.355.25130851.2528-6028-2.38152.5 6.00M56×３ 2 1/4450/125050156861.75146157.50136253.5032-6032-2.38157.5 6.19M56×３ 2 1/4460/130052161963.751511.359.50141355.5032-6032-2.38162.0 6.38M56×３ 2 1/4470/135054170267.001581.162.25147057.7528-6728-2.62170.0 6.69M64×３ 2 1/2500/140056175369.001632.064.25152759.7532-6732-2.62175.0 6.88M64×３ 2 1/2510/145058180371.00168366.25157862.0032-6732-2.62178.07.00M64×３ 2 1/2515/150060188674.25175369.00163564.0032-7332-2.88186.07.31M70×３2 3/4545/ASME B16.5、B16.47A(MSS SP-44), CLASS 400 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/295 3.7566.7 2.6235 1.384-164-0.62150.56M141/27575203/4120 4.6282.5 3.2543 1.694-194-0.75160.62M165/89090251125 4.8888.9 3.5051 2.004-194-0.75180.69M165/8909032 1 1/4135 5.2598.4 3.8864 2.504-194-0.75210.81M165/8959540 1 1/2155 6.12114.3 4.5073 2.884-224-0.88230.88M203/4110110502165 6.50127 5.092 3.628-198-0.7526 1.00M165/811011065 2 1/21907.50149.2 5.88105 4.128-228-0.8829 1.12M203/41201208032108.25168.3 6.62127 5.08-228-0.8832 1.25M203/4125125100427510.75215.98.50157 6.198-268-1.0038 1.50M247/8145145125533013.0266.710.51867.318-298-1.1245 1.75M271165165150635514.0292.111.52168.5012-2912-1.1248 1.88M271170170200842016.50349.213.7527010.6212-3212-1.2556 2.19M301 1/81901902501051020.0431.817.032412.7516-3516-1.3864 2.50M33 1 1/42152153001256022.048919.2538115.020-3520-1.3867 2.62M33 1 1/42202203501460523.7552720.7541316.2520-3920-1.5070 2.75M36×３ 1 3/82352354001668527.0603.223.7547018.5020-4220-1.6277 3.00M39×３ 1 1/22552554501874529.2565425.7553321.020-4520-1.7583 3.25M42×３ 1 5/82752755002081532.0723.928.5058423.024-4524-1.7589 3.50M42×３1 5/82852906002494037.0838.233.069227.2524-5124-2.00102 4.00M48×３ 1 7/833033565026101640.00914.436.074929.5028-5128-2.00108 4.25M48×３ 1 7/835036070028107342.25965.238.080031.5028-5528-2.12111 4.38M52×３236038075030113044.501022.440.2585733.7528-5528-2.12114 4.50M52×３237038580032119447.001079.542.5091436.0028-6028-2.38117 4.62M56×３2 1/438040085034124549.001130.344.5096538.0028-6028-2.38121 4.75M56×３ 2 1/439041090036131451.75119447.00102240.2528-6728-2.62124 4.88M64×３ 2 1/241043095038127050.00116245.75105441.5028-6028-2.38152 6.00M56×３ 2 1/4450/100040132152.00121347.75111143.7532-6032-2.38159 6.25M56×３ 2 1/4465/105042140355.25128350.50116846.0028-6728-2.62168 6.62M64×３ 2 1/2500/110044145457.251333.552.50122648.2532-6732-2.62173 6.81M64×３ 2 1/2510/115046151159.50139154.75127650.2532-6732-2.621797.06M64×３ 2 1/2520/120048159462.751460.557.50133452.5032-7332-2.881897.44M70×３ 2 3/4555/125050167065.75152460.00138454.5028-8028-3.121977.75M76×３3580/130052172167.75157562.00143556.5032-8032-3.122038.00M76×３3595/135054177870.00163264.25149258.7532-8032-3.122108.25M76×３3610/140056185473.00169566.75154360.7532-8632-3.382178.56M82×３3 1/4635/145058190575.00174668.75160063.0032-8632-3.382228.75M82×３ 3 1/4645/150060199478.50182271.75165765.2528-9428-3.622339.19M90×３3 1/2680/ASME B16.5、B16.47A(MSS SP-44), CLASS 600 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/2120 4.7582.6 3.2535 1.384-224-0.8822.50.88M203/47575203/4130 5.1288.9 3.5043 1.694-224-0.8825.5 1.0M203/49090251150 5.88101.6 4.051 2.04-264-129 1.12M247/8909032 1 1/4160 6.25111.1 4.3864 2.504-264-129 1.12M247/8959540 1 1/21807.0123.8 4.8873 2.884-294-1.1232 1.25M2711101105022158.50165.1 6.5092 3.628-268-138.5 1.50M247/811011065 2 1/22459.62190.57.50105 4.128-298-1.1241.5 1.62M2711201208032409.5190.57.50127 5.08-268-138.5 1.50M247/8145145100429011.5235.09.25157 6.198-328-1.2544.5 1.75M30 1 1/8170170125535013.75279.411.01867.318-358-1.3851 2.0M33 1 1/4190190150638015.0317.512.502168.5012-3212-1.2556 2.19M30 1 1/8190195200847018.50393.715.5027010.6212-3912-1.5063.5 2.50M36×3 1 3/82202202501054521.5469.918.5032412.7516-3916-1.5070 2.75M36×3 1 3/82352353001261024.0533.421.038115.020-3920-1.5079.5 3.12M36×3 1 3/82552553501464025.25558.822.041316.2520-4220-1.6286 3.38M39×3 1 1/22752804001670527.7561624.2547018.5020-4520-1.7589 3.50M42×3 1 5/82852904501878531.0685.827.053321.020-5120-2.01024M48×3 1 7/83253355002085533.75749.329.5058423.020-5520-2.12108 4.25M52×3235036060024104041.0901.735.569227.2520-6820-2.62140 5.5M64×3 2 1/244045565026108642.75952.537.5074929.5020-7320-2.88140 5.50M70×3 2 3/445548070028116846.001022.340.2580031.5020-8020-3.12143 5.62M76×3347550075030123248.501085.942.7585733.7520-8020-3.12149 5.88M76×3348551580032131451.751155.745.5091436.0020-8620-3.38159 6.25M82×3 3 1/452054585034139755.001225.648.2596538.0020-9420-3.62165 6.50M90×3 3 1/254058090036146157.50128950.75102240.2520-9420-3.62171.5 6.75M90×3 3 1/256559595038146157.50128950.75109943.2520-9420-3.621917.50M90×33 1/2605/100040151159.501339.952.75116245.7524-9424-3.621977.75M90×3 3 1/2615/105042156261.501390.754.75121347.7524-9424-3.622068.12M90×3 3 1/2635/110044164864.881463.557.62127050.0024-9924-3.882148.44M95×3 3 3/4660/115046173468.251536.760.50133452.5024-10524-4.12225.58.88M100×34690/120048173470.251587.562.50138454.5024-10524-4.122339.19M100×34705/Size DKdASME B16.5、B16.47A(MSS SP-44), CLASS 900 FLANGEn-LC螺柱直径双头螺栓长度(mm)DN NPSmm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/2120 4.7682.6 3.2535 1.384-224-0.8822.50.88M203/4110110203/4130 5.1288.9 3.543 1.694-224-0.8825.51M203/4115115251150 5.88101.6451 2.04-264-129 1.12M247/812512532 1 1/4160 6.25111.1 4.3864 2.504-264-129 1.12M247/812512540 1 1/21807123.8 4.8873 2.884-294-1.1232 1.25M2711401405022158.5165.1 6.592 3.628-268-138.5 1.50M247/814514565 2 1/22459.62190.57.5105 4.128-298-1.1241.5 1.62M27116016080326510.5203.28127 5.08-328-1.2548 1.88M30 1 1/8180180100431012.25241.39.5157 6.198-358-1.3854 2.12M33 1 1/4195195125537514.75292.111.51867.318-428-1.6273.5 2.88M39×3 1 1/2250250150639515.5317.512.52168.5012-3912-1.5083 3.25M36×3 1 3/8260265200848519393.715.527010.6212-4512-1.7592 3.62M42×3 1 5/82903252501058523482.61932412.7512-5112-2108 4.25M48×3 1 7/83353453001267526.5571.522.538115.016-5516-2.12124 4.88M52×323753853501475029.56352541316.2516-6016-2.38133.5 5.25M56×3 2 1/44054254001682532.5704.827.7547018.5016-6816-2.62146.5 5.75M64×3 2 1/24454704501891536774.730.553321.016-7416-2.88162 6.38M70×3 2 3/44955255002098538.75831.832.7558423.016-8016-3.121787M76×3354056560024117046990.63969227.2516-9416-3.62203.58M90×33 1/2645650Size DKdASME B16.5、B16.47A(MSS SP-44), CLASS 1500 FLANGEn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/2135 5.2588.9 3.535 1.384-224-0.8830.5 1.19M203/4120120203/4140 5.595.2 3.7543 1.694-224-0.8832 1.25M203/4125125251160 6.25108 4.2551 2.04-264-135 1.38M247/814014032 1 1/41857.25130.2 5.1264 2.504-294-1.1238.5 1.5M27115015040 1 1/22058146 5.7573 2.884-324-1.2544.5 1.75M30 1 1/81701705022359.25171.4 6.7592 3.628-298-1.12512M27118018065 2 1/226510.5196.87.75105 4.128-328-1.2557.5 2.25M30 1 1/819520580330512228.69127 5.08-358-1.3867 2.62M33×3 1 1/422023010043551427310.75157 6.198-428-1.6276.53M39×3 1 1/2255260125542016.5323.812.751867.318-488-1.8892.5 3.62M45×3 1 3/4300310150648519368.314.502168.508-558-2.12108 4.25M52×32345355200855021.75438.217.2527010.6212-5512-2.121275M52×323803952501067526.5593.821.2532412.7512-6712-2.62165.5 6.5M64×3 2 1/24905103001276030619.124.3838115.012-7412-2.88184.57.25M70×32 3/4540560Size DKdASME B16.5、B16.47A(MSS SP-44), CLASS 2500 FLANGEn-LC螺柱直径双头螺栓长度(mm)。

国标法兰尺寸对照表

95
65
14
4
M12
45
2
12
19
20
25
105
75
14
4
M12
55
2
14
26
25
32
115
85
14
4
M12
65
2
14
33
32
38
140/135
100
18
4
M16
78
2
16
39
40
45
150/145
110
18
4
M16
85
3
18
46
50
57
165/160
125
18
4
M16
100
3
18
59
65
73
185/180
34
35
2
4
18
48
8
34
4
15
18
105
75
14
4
M12
55
39
40
2
4
18
48
12
38
5
20
25
130/125
90
18
4
M16
68
50
51
2
4
20,
56
18
48
5
25
32
140/135
100
18
4
M16
78
57
58
2
4
22
58
25
52
5
32

RF法兰尺寸对照表

DNNPS mm in mm in mm in mm in mm in mm in 凸面2mm 环连接151/290 3.5060.5 2.37535 1.3754-154-0.6210/M141/255/203/4100 3.87570 2.7543 1.68754-154-0.6210/M141/265/251110 4.2579.5 3.1255124-154-0.62120.44M141/2657532 1 1/4120 4.62589 3.5064 2.504-154-0.62130.50M141/2708540 1 1/2130598.5 3.87573 2.8754-154-0.62150.56M141/270855021506120.5 4.7592 3.6254-194-0.75160.62M165/8859565 2 1/21807139.5 5.50105 4.1254-194-0.75180.69M165/8901008031907.50152.5612754-194-0.75190.75M165/89010010042309190.57.50157 6.18758-198-0.88240.94M165/8901001255255102168.501867.31258-228-0.88240.94M203/495110150628011241.59.502168.508-228-0.88261M203/4100115200834513.50298.511.7527010.6258-228-0.8829 1.12M203/4110120250104051636214.2532412.7512-2512-131 1.19M247/81151253001248519432173811512-2512-132 1.25M247/8120135350145352147618.7541316.2512-2912-1.1235 1.38M2711351454001660023.5054021.2547018.5016-2916-1.1237 1.44M271135145450186352557822.755332116-3216-1.2540 1.56M30 1 1/81451605002070027.50635255842320-3220-1.2543 1.69M30 1 1/81601706002481532749.529.5069227.2520-3520-1.3848 1.88M33 1 1/41701856502687034.25806.531.7574929.5024-3524-1.3868 2.69M33 1 1/4210/7002892736.50863.634.0080031.5028-3528-1.3871 2.81M33 1 1/4220/7503098438.75914.436.0085733.7528-3528-1.3875 2.94M33 1 1/4230/80032106041.7597838.5091436.0028-4128-1.6281 3.19M39×3 1 1/2255/85034111143.75102940.5096538.0032-4132-1.6283 3.25M39×3 1 1/2260/90036116846.00108642.75102240.2532-4132-1.6290 3.56M39×3 1 1/2275/95038123848.751149.445.25107342.2532-4132-1.6287 3.44M39×3 1 1/2270/100040128950.751200.247.25112444.2536-4136-1.6290 3.56M39×3 1 1/2275/105042134653.001257.349.50119447.0036-4136-1.6297 3.81M39×3 1 1/2290/110044140355.251314.551.75124549.0040-4140-1.62102 4.00M39×3 1 1/2300/115046145457.251365.353.75129551.0040-4140-1.62103 4.06M39×3 1 1/2305/120048151159.501422.456.00135953.5044-4144-1.62108 4.25M39×3 1 1/2310/125050156861.751479.658.25141055.5044-4844-1.88111 4.38M45×3 1 3/4330/130052162664.00153760.50146157.5044-4844-1.88116 4.56M45×3 1 3/4340/135054168366.25159462.75151159.5044-4844-1.88121 4.75M45×3 1 3/4350/140056174668.75165165.00157562.0048-4848-1.88124 4.88M45×3 1 3/4355/145058180371.001708.267.25162664.0048-4848-1.88129 5.06M45×3 1 3/4365/150060185473.00175969.25167666.0052-4852-1.881325.19M45×31 3/4375/ASME B16.5、B16.47A(MSS SP-44), CLASS 150 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面2mm 环连接151/295 3.7566.7 2.6235 1.384-164-0.62150.56M141/26575203/4120 4.6282.5 3.2543 1.694-194-0.75160.62M165/87590251125 4.8889 3.5051 2.04-194-0.75180.69M165/8759032 1 1/4135 5.2598.5 3.8864 2.504-194-0.75190.75M165/8859540 1 1/2155 6.12114.5 4.5073 2.884-224-0.88210.81M203/490100502165 6.50127 5.092 3.628-198-0.62230.88M165/89010065 2 1/21907.50149 5.88105 4.128-228-0.88261M203/41001158032108.25168.5 6.62127 5.08-228-0.8829 1.12M203/41101201004255102007.88157 6.198-228-0.8832 1.25M203/41151251255280112359.251867.318-228-0.8835 1.38M203/4120135150632012.5027010.622168.5012-2212-0.8837 1.44M203/4120140200838015.033013.027010.6212-2612-142 1.62M247/81401502501044517.50387.515.2532412.7516-2916-1.1248 1.88M2711601703001252020.5045117.7538115.016-3216-1.25512M30 1 1/81701853501458523.0514.520.2541316.2520-3220-1.2554 2.12M30 1 1/81801904001665025.50571.522.5047018.5020-3520-1.3858 2.25M33 1 1/41902054501871028.0628.524.7553321.024-3524-1.3861 2.38M33 1 1/41952105002077530.5068627.058423.024-3524-1.3864 2.50M33 1 1/42052206002491536.081332.069227.2524-4124-1.6270 2.75M39×3 1 1/22302556502697238.25876.334.5074929.5028-4528-1.7579 3.12M42×3 1 5/826028570028103540.7593437.0080031.5028-4528-1.7586 3.38M42×3 1 5/827530075030109243.099739.2585733.7528-4828-1.8892 3.62M45×3 1 3/429032080032114945.251054.141.5091436.0028-5128-2.0099 3.88M48×3 1 7/831034085034120747.50110543.5096538.0032-5132-2.00102 4.00M48×3 1 7/831534590036127050.001168.446.00102240.2532-5432-2.12105 4.12M52×3233036095038116846.001092.243.00102940.5032-4132-1.62108 4.25M39×3 1 1/2310/100040123848.75115645.50108642.7532-4532-1.75114 4.50M42×3 1 5/8330/105042128950.75120747.50113744.7532-4532-1.75119 4.69M42×3 1 5/8340/110044135353.25126449.75119447.0032-4832-1.88124 4.88M45×3 1 3/4355/115046141655.75132152.00124549.0028-5128-2.00129 5.06M48×3 1 7/8370/120048146757.75137254.00130251.2532-5132-2.00133 5.25M48×3 1 7/8380/125050153060.25142956.25135953.5032-5532-2.12140 5.50M52×32400/130052158162.25148058.25141055.5032-5532-2.12145 5.69M52×32410/135054165765.25154961.00146757.7528-6028-2.38152 6.00M56×3 2 1/4435/140056170867.25160063.00151859.7528-6028-2.38154 6.06M56×3 2 1/4440/145058175969.25165165.00157562.0032-6032-2.38159 6.25M56×3 2 1/4450/150060181071.25170267.00162664.0032-6032-2.381646.44M56×32 1/4460/ASME B16.5、B16.47A(MSS SP-44), CLASS 300 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/295 3.7566.7 2.6235 1.384-164-0.62150.56M141/27575203/4120 4.6282.5 3.2543 1.694-194-0.75160.62M165/89090251125 4.8888.9 3.5051 2.04-194-0.75180.69M165/8909032 1 1/4135 5.2598.4 3.8864 2.504-194-0.75210.81M165/8959540 1 1/2155 6.12114.3 4.5073 2.884-224-0.8822.50.88M203/4110110502165 6.50127.0 5.0092 3.628-198-0.7525.5 1.00M165/811011065 2 1/21907.50149.2 5.88105 4.128-228-0.8829 1.12M203/41201208032108.25168.3 6.62127 5.08-228-0.8832 1.25M203/4125125100425510.00200.07.88157 6.198-268-1.0035 1.38M247/8140140125528011.00234.99.251867.318-268-1.0038.5 1.50M247/8145145150632012.50269.910.622168.5012-2612-1.0041.5 1.62M247/8150150200838015.00330.213.0027010.6212-2912-1.1248 1.88M2711701702501044517.50387.315.2532412.7516-3216-1.2554 2.12M30 1 1/81901903001252020.50450.817.7538115.016-3516-1.3857.5 2.25M33 1 1/42052053501458523.00514.320.2541316.2520-3520-1.3860.5 2.38M33 1 1/42102104001665025.50571.522.5047018.5020-3920-1.5063.5 2.50M36×３1 3/82202204501871028.00628.024.7553321.024-3924-1.5067 2.62M36×３ 1 3/82302305002077530.50685.827.0058423.024-4224-1.6270 2.75M39×３ 1 1/22402506002491536.00812.832.0069227.2524-4824-1.8876.5 3.00M45×３ 1 3/42652806502697238.25876.334.5074929.5028-4828-1.8889.0 3.50M45×３ 1 3/430032070028103540.7594037.0080031.5028-5128-2.0095.5 3.75M48×３ 1 7/832034075030109243.0099739.2585733.7528-5528-2.12102.0 4.00M52×３234036080032114945.251054.141.5091436.0028-5528-2.12108.0 4.25M52×３235537585034120747.50110543.5096538.0028-5528-2.12111.5 4.38M52×３236538590036127050.001168.446.00102240.2532-5532-2.12114.5 4.50M52×３237039095038120747.50111844.00103540.5032-4832-1.88124.0 4.88M45×３ 1 3/4370/100040127050.00117546.25109242.7532-5132-2.00130.0 5.12M48×３ 1 7/8385/105042132152.00122648.25114344.7532-5132-2.00133.5 5.25M48×３ 1 7/8395/110044138454.50128350.50120047.0032-5532-2.12134.0 5.50M52×３2405/115046144156.75134052.75125749.0036-5536-2.12146.0 5.75M52×３2425/120048151159.501403.355.25130851.2528-6028-2.38152.5 6.00M56×３ 2 1/4450/125050156861.75146157.50136253.5032-6032-2.38157.5 6.19M56×３ 2 1/4460/130052161963.751511.359.50141355.5032-6032-2.38162.0 6.38M56×３ 2 1/4470/135054170267.001581.162.25147057.7528-6728-2.62170.0 6.69M64×３ 2 1/2500/140056175369.001632.064.25152759.7532-6732-2.62175.0 6.88M64×３ 2 1/2510/145058180371.00168366.25157862.0032-6732-2.62178.07.00M64×３ 2 1/2515/150060188674.25175369.00163564.0032-7332-2.88186.07.31M70×３2 3/4545/ASME B16.5、B16.47A(MSS SP-44), CLASS 400 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/295 3.7566.7 2.6235 1.384-164-0.62150.56M141/27575203/4120 4.6282.5 3.2543 1.694-194-0.75160.62M165/89090251125 4.8888.9 3.5051 2.004-194-0.75180.69M165/8909032 1 1/4135 5.2598.4 3.8864 2.504-194-0.75210.81M165/8959540 1 1/2155 6.12114.3 4.5073 2.884-224-0.88230.88M203/4110110502165 6.50127 5.092 3.628-198-0.7526 1.00M165/811011065 2 1/21907.50149.2 5.88105 4.128-228-0.8829 1.12M203/41201208032108.25168.3 6.62127 5.08-228-0.8832 1.25M203/4125125100427510.75215.98.50157 6.198-268-1.0038 1.50M247/8145145125533013.0266.710.51867.318-298-1.1245 1.75M271165165150635514.0292.111.52168.5012-2912-1.1248 1.88M271170170200842016.50349.213.7527010.6212-3212-1.2556 2.19M301 1/81901902501051020.0431.817.032412.7516-3516-1.3864 2.50M33 1 1/42152153001256022.048919.2538115.020-3520-1.3867 2.62M33 1 1/42202203501460523.7552720.7541316.2520-3920-1.5070 2.75M36×３ 1 3/82352354001668527.0603.223.7547018.5020-4220-1.6277 3.00M39×３ 1 1/22552554501874529.2565425.7553321.020-4520-1.7583 3.25M42×３ 1 5/82752755002081532.0723.928.5058423.024-4524-1.7589 3.50M42×３1 5/82852906002494037.0838.233.069227.2524-5124-2.00102 4.00M48×３ 1 7/833033565026101640.00914.436.074929.5028-5128-2.00108 4.25M48×３ 1 7/835036070028107342.25965.238.080031.5028-5528-2.12111 4.38M52×３236038075030113044.501022.440.2585733.7528-5528-2.12114 4.50M52×３237038580032119447.001079.542.5091436.0028-6028-2.38117 4.62M56×３2 1/438040085034124549.001130.344.5096538.0028-6028-2.38121 4.75M56×３ 2 1/439041090036131451.75119447.00102240.2528-6728-2.62124 4.88M64×３ 2 1/241043095038127050.00116245.75105441.5028-6028-2.38152 6.00M56×３ 2 1/4450/100040132152.00121347.75111143.7532-6032-2.38159 6.25M56×３ 2 1/4465/105042140355.25128350.50116846.0028-6728-2.62168 6.62M64×３ 2 1/2500/110044145457.251333.552.50122648.2532-6732-2.62173 6.81M64×３ 2 1/2510/115046151159.50139154.75127650.2532-6732-2.621797.06M64×３ 2 1/2520/120048159462.751460.557.50133452.5032-7332-2.881897.44M70×３ 2 3/4555/125050167065.75152460.00138454.5028-8028-3.121977.75M76×３3580/130052172167.75157562.00143556.5032-8032-3.122038.00M76×３3595/135054177870.00163264.25149258.7532-8032-3.122108.25M76×３3610/140056185473.00169566.75154360.7532-8632-3.382178.56M82×３3 1/4635/145058190575.00174668.75160063.0032-8632-3.382228.75M82×３ 3 1/4645/150060199478.50182271.75165765.2528-9428-3.622339.19M90×３3 1/2680/ASME B16.5、B16.47A(MSS SP-44), CLASS 600 FLANGESize DKdn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/2120 4.7582.6 3.2535 1.384-224-0.8822.50.88M203/47575203/4130 5.1288.9 3.5043 1.694-224-0.8825.5 1.0M203/49090251150 5.88101.6 4.051 2.04-264-129 1.12M247/8909032 1 1/4160 6.25111.1 4.3864 2.504-264-129 1.12M247/8959540 1 1/21807.0123.8 4.8873 2.884-294-1.1232 1.25M2711101105022158.50165.1 6.5092 3.628-268-138.5 1.50M247/811011065 2 1/22459.62190.57.50105 4.128-298-1.1241.5 1.62M2711201208032409.5190.57.50127 5.08-268-138.5 1.50M247/8145145100429011.5235.09.25157 6.198-328-1.2544.5 1.75M30 1 1/8170170125535013.75279.411.01867.318-358-1.3851 2.0M33 1 1/4190190150638015.0317.512.502168.5012-3212-1.2556 2.19M30 1 1/8190195200847018.50393.715.5027010.6212-3912-1.5063.5 2.50M36×3 1 3/82202202501054521.5469.918.5032412.7516-3916-1.5070 2.75M36×3 1 3/82352353001261024.0533.421.038115.020-3920-1.5079.5 3.12M36×3 1 3/82552553501464025.25558.822.041316.2520-4220-1.6286 3.38M39×3 1 1/22752804001670527.7561624.2547018.5020-4520-1.7589 3.50M42×3 1 5/82852904501878531.0685.827.053321.020-5120-2.01024M48×3 1 7/83253355002085533.75749.329.5058423.020-5520-2.12108 4.25M52×3235036060024104041.0901.735.569227.2520-6820-2.62140 5.5M64×3 2 1/244045565026108642.75952.537.5074929.5020-7320-2.88140 5.50M70×3 2 3/445548070028116846.001022.340.2580031.5020-8020-3.12143 5.62M76×3347550075030123248.501085.942.7585733.7520-8020-3.12149 5.88M76×3348551580032131451.751155.745.5091436.0020-8620-3.38159 6.25M82×3 3 1/452054585034139755.001225.648.2596538.0020-9420-3.62165 6.50M90×3 3 1/254058090036146157.50128950.75102240.2520-9420-3.62171.5 6.75M90×3 3 1/256559595038146157.50128950.75109943.2520-9420-3.621917.50M90×33 1/2605/100040151159.501339.952.75116245.7524-9424-3.621977.75M90×3 3 1/2615/105042156261.501390.754.75121347.7524-9424-3.622068.12M90×3 3 1/2635/110044164864.881463.557.62127050.0024-9924-3.882148.44M95×3 3 3/4660/115046173468.251536.760.50133452.5024-10524-4.12225.58.88M100×34690/120048173470.251587.562.50138454.5024-10524-4.122339.19M100×34705/Size DKdASME B16.5、B16.47A(MSS SP-44), CLASS 900 FLANGEn-LC螺柱直径双头螺栓长度(mm)DN NPSmm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/2120 4.7682.6 3.2535 1.384-224-0.8822.50.88M203/4110110203/4130 5.1288.9 3.543 1.694-224-0.8825.51M203/4115115251150 5.88101.6451 2.04-264-129 1.12M247/812512532 1 1/4160 6.25111.1 4.3864 2.504-264-129 1.12M247/812512540 1 1/21807123.8 4.8873 2.884-294-1.1232 1.25M2711401405022158.5165.1 6.592 3.628-268-138.5 1.50M247/814514565 2 1/22459.62190.57.5105 4.128-298-1.1241.5 1.62M27116016080326510.5203.28127 5.08-328-1.2548 1.88M30 1 1/8180180100431012.25241.39.5157 6.198-358-1.3854 2.12M33 1 1/4195195125537514.75292.111.51867.318-428-1.6273.5 2.88M39×3 1 1/2250250150639515.5317.512.52168.5012-3912-1.5083 3.25M36×3 1 3/8260265200848519393.715.527010.6212-4512-1.7592 3.62M42×3 1 5/82903252501058523482.61932412.7512-5112-2108 4.25M48×3 1 7/83353453001267526.5571.522.538115.016-5516-2.12124 4.88M52×323753853501475029.56352541316.2516-6016-2.38133.5 5.25M56×3 2 1/44054254001682532.5704.827.7547018.5016-6816-2.62146.5 5.75M64×3 2 1/24454704501891536774.730.553321.016-7416-2.88162 6.38M70×3 2 3/44955255002098538.75831.832.7558423.016-8016-3.121787M76×3354056560024117046990.63969227.2516-9416-3.62203.58M90×33 1/2645650Size DKdASME B16.5、B16.47A(MSS SP-44), CLASS 1500 FLANGEn-LC螺柱直径双头螺栓长度(mm)DNNPS mm in mm in mm in mm in mm in mm in 凸面6.4mm 环连接151/2135 5.2588.9 3.535 1.384-224-0.8830.5 1.19M203/4120120203/4140 5.595.2 3.7543 1.694-224-0.8832 1.25M203/4125125251160 6.25108 4.2551 2.04-264-135 1.38M247/814014032 1 1/41857.25130.2 5.1264 2.504-294-1.1238.5 1.5M27115015040 1 1/22058146 5.7573 2.884-324-1.2544.5 1.75M30 1 1/81701705022359.25171.4 6.7592 3.628-298-1.12512M27118018065 2 1/226510.5196.87.75105 4.128-328-1.2557.5 2.25M30 1 1/819520580330512228.69127 5.08-358-1.3867 2.62M33×3 1 1/422023010043551427310.75157 6.198-428-1.6276.53M39×3 1 1/2255260125542016.5323.812.751867.318-488-1.8892.5 3.62M45×3 1 3/4300310150648519368.314.502168.508-558-2.12108 4.25M52×32345355200855021.75438.217.2527010.6212-5512-2.121275M52×323803952501067526.5593.821.2532412.7512-6712-2.62165.5 6.5M64×3 2 1/24905103001276030619.124.3838115.012-7412-2.88184.57.25M70×32 3/4540560Size DKdASME B16.5、B16.47A(MSS SP-44), CLASS 2500 FLANGEn-LC螺柱直径双头螺栓长度(mm)。

各种标准法兰尺寸对照

| | 各种标准法兰尺寸对照公称通径PN16（GB PN10 (GB - 84) PN6(GB - 84)外圆孔距螺栓孔数外圆孔距螺栓孔数外圆孔距螺栓孔数15 - - - - 95 65 M12 4 - - - -20 - - - - 105 75 M12 4 - - - -25 - - - - 115 85 M12 4 - - - -32 - - - - 140 100 M16 4 - - - -40 150 110 M16 4 150 110 M16 4 130 100 M12 450 165 125 M16 4 165 125 M16 4 140 110 M12 465 185 145 M16 4 185 145 M16 4 160 130 M12 480 200 160 M16 8 200 160 M16 8 190 150 M16 4100 220 180 M16 8 220 180 M16 8 210 170 M16 4 125 250 210 M16 8 250 210 M16 8 240 200 M16 8 150 285 240 M20 8 285 240 M20 8 265 225 M16 8 200 340 295 M20 12 340 295 M20 8 320 280 M16 8 250 405 355 M24 12 395 350 M20 12 375 335 M16 12 300 460 410 M24 12 445 400 M20 12 440 395 M20 12 350 520 460 M24 16 505 460 M20 16 490 445 M20 12 400 580 525 M27 16 565 515 M24 16 540 495 M20 16DIN PN10 \ JIS 10K \ANSI 150LBS 法兰尺寸对照表尺寸1/2"3/4"1"11/4"11/2"2"21/2"3"4"5"6"8"10"12"承插口径DIN2025324050637590110140160225250315 ANSI73JIS2226323848607689114140165216267318螺孔距DIN657585100110125145160180210240295350400 ANSI6070798998121140152191241298362432 JIS7075900100105120140150175210240290355400螺孔数/直径DIN4-144-188-188-2312-23 ANSI4-164-198-198-2212-2412-25 JIS4-154-198-198-2312-2312-2516-25法兰外圆直径DIN95105115140150165185200220250285340396445 ANSI8998108117127152178191229254284343406481 JIS95100125135140155175185210250280330400445船用法兰尺寸解释日期：2009-07-11船用法兰在很多地方使用。

美标与国标压力管径法兰关系对照表精选版

美标与国标压力管径法兰关系对照表Document serial number【KKGB-LBS98YT-BS8CB-BSUT-BST108】美标与国标压力、管径、法兰关系对照表ANSI是美国国家标准学会（AMERICAN NATIONAL STANDARDS INSTITUTE: ANSI）的简称。

一、美标压力与公称压力关系ANSI标准压力磅级与公称压力的关系表1bf/in2===1kgf/cm2=in2=1bar=in2=cm2ASME标准压力磅级与公称压力的关系表二、美标压力与公称压力关系三、美标、日标、德标法兰尺寸表法兰标准尺寸表一、ANSI150、300、400、600、900、1500、2500RF法兰尺寸表（美标）二、ANSI 150、300、600、900、1500、2500RJ法兰尺寸表三、JIS 10K、16K、20K、30K、40K、63K、RF、FF法兰尺寸表（日标）表19 JIS 63K、RF、FF mm公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t f n-d M 25140100702227140-2320 4017513090353224-2522 50185145105483428-2320 65220175130573828-2522 80230185140734028-2522 100270220165994428-2724 1253252652001215028-3330 15036530524014652212-3330 20042536029019058212-3330 25050043035523868212-3936 30056048541028377316-3936四、JPI 150、300、600RF、RJ法兰尺寸表RJ法兰公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t f n-d M 209843194-1512 2510851254-1512 4012773384-1512 5015292514-1916 65178105644-1916 80190127764-1916 1002291571028-1916 1252541861258-2220 1502792161528-2220 2003432702048-2220 25040632425412-2522 30048338130512-2522公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t f n-d M 2011743194-1916。

国标法兰尺寸对照表

3
24
161
175
194
310
270
23
8
M20
240
3
24
196
200
219
340/335
295
23
8
M20
265
3
24
222
225
245
365
325
23
8
M20
295
3
24
248
250
273
395/390
350
23
12
M20
320
3
26
276
300
325
445/440
400
23
12
M20
368
4
28
M30/M33
1115
5
38
1020
90参考
1100
1120
1340
1270
36
28
M33
1222
5
40
125参考
1200
1220
1455/1450
1380
39/41
32
M36
1325
5
44
1223
143参考
凸面平焊钢制管法兰 PN (16bar)MM
公称通径DN
管子外径A
连接尺寸
密封尺寸
法兰厚度C
f1f2
数量n
螺纹Th系列1/系列2
A型
B型
10
14
100
70
14
4
M12
50
34
35
2
4
18

法兰标准尺寸表(美标、日标、德标)

法兰标准尺寸表一、ANSI150、300、400、600、900、1500、2500RF法兰尺寸表（美標）二、ANSI 150、300、600、900、1500、2500RJ法兰尺寸表公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度梯形槽中心圆直径梯形槽深度梯形槽宽度螺栓孔数量与直径螺栓直径DN D D1D2D3t f L E F n-d M 25108254-1512 40127384-1512 50152514-1916 65178644-1916 80190764-1916 1002291028-1916 1252542161278-2320 1502791528-2320 200343273203358-2320 25040636225412-2522 30048343230538112-2522公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度梯形槽中心圆直径梯形槽深度梯形槽宽度螺栓孔数量与直径螺栓直径DN D D1D2D3t f L E F n-d M 20117194-1916 2512489254-1916 40156384-2320 5016512710851888-1916 6519014912764888-2320 8021016814676888-2320 100254200102888-2320 12527923512743888-2320 1503182701528812-2320 2003813302038812-2522 2504442548816-3027 3005214513058381816-3330三、JIS 10K、16K、20K、30K、40K、63K、RF、FF法兰尺寸表（日標）公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t﹡f n-d M 2010075581914/ 18 14-1512 2512590702514 /18 14-1916 40140105853816 /20 24-1916 501551*********/ 20 24-1916 651751*********/ 22 24-1916 801851501307618 /22 28-1916 10021017515510218/ 24 28-1916 12525021018512520/ 24 28-2320 15028024021515222 / 26 28-2320 20033029026520422/ 26 28-2320 25040035532525424/ 30 212-2522 30041540037030524/ 32 316-2522公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t﹡f n-d M 2010075581914/ 18 14-1512 2512560702514 /18 14-1916 40140105853816 /20 24-1916 501551*********/ 20 28-1916 651751*********/ 22 28-1916 802001601357620/ 24 28-2320 10022518516010222/ 26 28-2320 12527022519512522/ 26 212-2522 15030526023015224/ 28 212-2522 20035030527520426/ 30 212-2522 25043038034525428/ 34 212-2724 30048043039530530/ 36 316-2724四、JPI 150、300、600RF、RJ法兰尺寸表RJ法兰公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t f n-d M 209843194-1512 2510851254-1512 4012773384-1512 5015292514-1916 65178105644-1916 80190127764-1916 1002291571028-1916 1252541861258-2220 1502792161528-2220 2003432702048-2220 25040632425412-2522 30048338130512-2522公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t f n-d M 2011743194-1916 2512451254-1916 4015673384-2220 5016592518-1916 65190105648-2220 80210127768-2220 1002541571028-2220 1252791861258-2220 15031821615212-2220 20038127020412-2522 25044432425416-2927 30052138130516-3230五、德国DIN标准法兰尺寸PN16 PN40公称通径外径螺栓孔中心圆直径连接凸出部分直径连接凸出部分高度法兰厚度螺栓孔数量与直径螺栓直径DN D D1D2f H n-d M 159565452144-1412 2010575582164-1412 2511585682164-1412 32140100782184-1816 40150110882184-1816 501651*********-1816 651851*********-1816 802001601383228-1816 1002201801583248-1816 1252502101883268-1816 1502852402123268-2220 2003402952683308-2220 2504053553203328-2624公称通径外径螺栓孔中心圆直径连接凸出部分直径连接凸出部分高度法兰厚度螺栓孔数量与直径螺栓直径DN D D1D2f H n-d M 159565452164-1412 2010575582184-1412 2511585682184-1412 32140100782184-1816 40150110882184-1816 501651*********-1816 651851*********-1816 802001601383248-1816 1002351901623248-2220 125270220188 3 268-2624 1503002502183288-2624 20037532028533412-3027 25045038534533812-3330。

各类标准法兰尺寸对照表(完整版)

4
2 DN 50 165 125 18
4
21 /2 DN 65 185 145 18
4
3 DN 80 200 160 18
8
31 /2 DN 100 220 180 18
8
4 DN 125 250 210 18
8
5 DN 150 285 240 22
8
6 DN 200 340 295 22
8
8 DN 250 395 350 22
19
175 140
19
3 DN 80 185 150 19
8
1
3 /2 DN90 195 160 19
8
18 DN 80 18 DN90
200 160
22
210 170
22
4 DN 100 210 175 19
8
18 DN 100
225 185
22
5 DN 125 250 210 23
8
20 DN 125
ANSI 标准 150型
10kg=1.0MPa
in 公称通径法兰螺栓孔螺栓直
外径
距
径
螺栓孔数
3/8 DN 10
法兰厚度
公称通径
DN 10
1/2 DN 15
DN 15
3/4 DN 20
DN 20
1 DN 25
11 /4 DN 32
11 /2 DN 40 127 98.5
16
DN 25 DN 32
4
14.3 DN 40
2 DN 50 152 120.5 19 21 /2 DN 65 178 139.5 19
4
15.9 DN 50

法兰及钢管尺寸对照表

公称尺寸 DN 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350
400
密封面尺寸
d
公称压力PN
f1 f2 f3 W X Y Z
2.5 6 10 16 25 ≥40
法兰外径D
35 35 40 40 40 40 2 4.5 4 24 34 35 23
258 258 268 268 278 285 2 5 4.5 239 259 260 238 320
312 312 320 320 335 345 2 5 4.5 292 312 313 291 375
365 365 370 378 395 410 2 5 4.5 343 363 364 342 440
80 80 88 88 88 88 2 4.5 4 61 75 76 60 130
90 90 102 102 102 102 2 4.5 4 73 87 88 72 140
110 110 122 122 122 122 2 4.5 4 95 109 110 94 160
128 128 138 138 138 138 2 4.5 4 106 120 121 105 190
4
90
4
95
4
105
5
115
5
140
5
150
5
165
6
185
6
200
6
235
6
270
6
300
8
360
10
425
11
485
12
555
连接尺寸
螺栓孔中心圆直径K 螺栓孔直径L
60

美标与国标压力管径法兰关系对照表

美标与国标压力、管径、法兰关系对照表ANSI是美国国家标准学会（AMERICAN NATIONAL STANDARDS INSTITUTE: ANSI）的简称。

一、美标压力与公称压力关系ANSI标准压力磅级与公称压力的关系表1bf/in2===1kgf/cm2=in2=1bar=in2=cm2ASME标准压力磅级与公称压力的关系表二、美标压力与公称压力关系ANSI标准管径与国标管径比较三、美标、日标、德标法兰尺寸表法兰标准尺寸表一、ANSI150、300、400、600、900、1500、2500RF法兰尺寸表（美标）表1 ANSI 150RF mm公称通径外径螺栓孔中心圆直径连接凸出部分直径内径焊接处颈部直径颈根部直径法兰厚度焊接法兰长度连接凸出部分高度螺栓孔直径数量螺栓直径DN D D1D2A B C E F G J L1L2L3L d n M 20987043212820273813531622915412 251085127352534514914561715412 321188935433242605916572115412二、ANSI 150、300、600、900、1500、2500RJ法兰尺寸表公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度梯形槽中心圆直径梯形槽深度梯形槽宽度螺栓孔数量与直径螺栓直径DN D D1D2D3t f L E F n-d M 25108254-1512 40127384-1512 50152514-1916 65178644-1916 80190764-1916 1002291028-1916 1252542161278-2320 1502791528-2320 200343273203358-2320 25040636225412-2522 30048343230538112-2522公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度梯形槽中心圆直径梯形槽深度梯形槽宽度螺栓孔数量与直径螺栓直径DN D D1D2D3t f L E F n-d M 20117194-1916 2512489254-1916 40156384-2320 5016512710851888-1916 6519014912764888-2320 8021016814676888-2320 100254200102888-2320 12527923512743888-2320 1503182701528812-2320 2003813302038812-2522 2504442548816-3027三、JIS 10K、16K、20K、30K、40K、63K、RF、FF法兰尺寸表（日标）公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t﹡f n-d M 2010075581914/ 1814-1512 2512590702514 /1814-1916 40140105853816 /2024-1916 501551*********/ 2024-1916 651751*********/ 2224-1916 801851501307618 /2228-1916 10021017515510218/ 2428-1916 12525021018512520/ 2428-2320 15028024021515222 / 2628-2320 20033029026520422/ 2628-2320 25040035532525424/ 30212-2522 30041540037030524/ 32316-2522公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t﹡f n-d M 2010075581914/ 1814-1512 2512560702514 /1814-1916 40140105853816 /2024-1916 501551*********/ 2028-1916 651751*********/ 2228-1916 802001601357620/ 2428-2320 10022518516010222/ 2628-2320 12527022519512522/ 26212-2522 15030526023015224/ 28212-2522 20035030527520426/ 30212-2522四、JPI 150、300、600RF、RJ法兰尺寸表RJ法兰公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t f n-d M 209843194-1512 2510851254-1512 4012773384-1512 5015292514-1916 65178105644-1916 80190127764-1916 1002291571028-1916 1252541861258-2220 1502792161528-2220 2003432702048-2220 25040632425412-2522 30048338130512-2522公称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接凸出部分高度螺栓孔数量与直径螺栓直径DN D D1D2D3t f n-d M 2011743194-1916 2512451254-1916 4015673384-2220 5016592518-1916 65190105648-2220 80210127768-2220 1002541571028-2220 1252791861258-2220 15031821615212-2220五、德国DIN标准法兰尺寸PN16PN40公称通径外径螺栓孔中心圆直径连接凸出部分直径连接凸出部分高度法兰厚度螺栓孔数量与直径螺栓直径DN D D1D2f H n-d M 159565452144-1412 2010575582164-1412 2511585682164-1412 32140100782184-1816 40150110882184-1816 501651*********-1816 651851*********-1816 802001601383228-1816 1002201801583248-1816 1252502101883268-1816 1502852402123268-2220 2003402952683308-2220 2504053553203328-2624公称通径外径螺栓孔中心圆直径连接凸出部分直径连接凸出部分高度法兰厚度螺栓孔数量与直径螺栓直径DN D D1D2f H n-d M 159565452164-1412 2010575582184-1412 2511585682184-1412 32140100782184-1816 40150110882184-1816 501651*********-1816 651851*********-1816。

法兰尺寸对照表(完整版)

14 14 16 16
4
18
4
18
4
20
4
20
8
20
8
22
8
22
8
24
8
26
12
29
12
32
16
35
16
38
20
42
20
46
20
52
S标准
JIS标准
16kg=1.6MPa 螺栓孔数
4 8 8 8 8 8 8 12 12
法兰厚度
16 16 18 20 20 22 22 24 26
公称通径
DN10 DN15 DN20 DN25 DN32
in 公称通径法兰螺栓孔螺栓直
公称通径
外径距
3/8 DN10
径螺栓孔数法兰厚度
DN10
1/2 DN15
DN15
3/4 DN20
DN20
1 DN25
DN25
11/4 DN32
DN32
11/2 DN40 140 105 19
4
2 DN50 155 120 19
4
16 DN40 16 DN50
140 105
19
155 120
19
175 140
19
200 160
22
210 170
22
225 185
22
270 225
25
305 260
25
350 305
25
10 DN250 400 355 25
12
12 DN300 445 400 25
16
14 DN350 490 445 25

公英制法兰对照表

33
32
42
64
64
27
73
35
40
48
70
70
29
76
38
50
60
84
84
32
79
43
65
73
100
100
35
86
48
80
89
117
117
38
89
52
100
114
152
152
45
108
57
按用户要求
125
330 266.5 186
144
150
356
292
216
171
200
419
349
270
221
64
35
40
156 114.5
73
41
50
165
127
92
53
65
191
149
105
63
80
210
168
127
78
100
254
200
157
102
125
279
235
186
128
150
318
270
216
154
200
381
330270Fra bibliotek203
250
445 387.5 324
255
300
521
451
381
305
螺栓孔中连接凸出
心圆直径部分直径
D1
D2
82.5 63.5

美标与国标压力、管径、法兰关系对照表

62
27
1.6
19
4
16
32
133
98.4
64
35
43
32
42
64
64
19
65
27
1.6
19
4
16
40
156
114.5
73
41
50
40
48
70
70
21
68
30
1.6
23
4
20
50
165
127
92
53
62
50
60
84
84
22
70
33
1.6
19
8
16
65
191
149
105
63
75
65
73
100
100
25
27
48
22
64
32
235
6.4
19
4
16
25
124
89
51
35
25
34
54
54
24
68
33
6.4
19
4
16
32
133
98
64
43
32
42
64
64
27
73
35
6.4
19
4
16
40
156
114
73
50
40
48
70
70
29
76
38
6.4
23
4
20
50
165

ANSI-RF法兰标准尺寸表

ANSI-RF法兰标准尺寸表美标法兰标准凸面法兰标准尺寸表一、__、300、400、600、900、1500、2500RF 法兰尺寸表美标法兰标准凸面表1 ANSI 150RF公称通径DN 20 25 32 40 50 65 80 100 125 150 200 250 300外径D 98 108 118 127 152 178 190 229 254 279 343 406 483螺栓孔中连接凸出心圆直径部分直径D1 70 79.5 89 98.5 120.5 139.5 152.5 190.5 216 241.5 298.5 362 432 D2 43 51 63.5 73 92 105 127 157 186 216 270 324 381 A 21 27 35 41 53 63 78mm内径B 28 35 43 50 62 75 91 C 20 25 32 40 50 65 80 100 125 150 200 250 300焊接处颈部颈根部直径E 27 34 42 48 60.5 73 89 114 141 168 219 273 324 51 60 67 83 95 108 140 165 197 248 305 365 F直径G 38 49 59 65 78 91 108 135 164 192 246 305 365法兰厚度J 13 14 16 18 19 24 24 24 24 25 29 30 32焊接法兰长度L1 53 56 57 62 64 70 70 76 89 89 102 102 114 L2 16 17 21 22 25 29 30 33 37 40 44 49 56 305 229 L3连接凸出螺栓孔部分高度L 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6直径 d 15 15 15 15 19 19 19 19 23 23 23 25 25数量n 4 4 4 4 44 4 8 8 8 8 12 12螺栓直径M 12 12 12 12 16 16 16 16 M20 M20 M20 M22 M22102 116 128 144 154 171 203 221 255 276 305 327表2 ANSI 300RF公称通径DN 20 25 32 40 50 65外径D 117 124 133 156 165 191螺栓孔中连接凸出心圆直径部分直径D1 82.5 89 98.4 114.5 127 149 D2 43 51 64 73 92 105 A 21 27 35 41 53 63mm内径B 28 35 43 50 62 75 C 20 25 32 40 50 65焊接处颈部颈根部直径 E 27 34 42 48 60 73 54 64 70 84 100 F直径G 48 54 64 70 84 100法兰厚度J 16 17 19 21 22 25焊接法兰长度L1 57 62 65 68 70 76 L2 25 27 27 30 33 38 L3 229连接凸出螺栓孔部分高度L 1.6 1.6 1.6 1.6 1.6 1.6直径 d 19 19 19 23 19 23数量n 4 4 4 4 8 8螺栓直径M 16 16 16 20 16 20美标法兰标准凸面80 100 125 150 200 250 300210 254 279 318 381 445 521168 200 235 270 330 387.5 451127 157 186 216 270 324 38178 102 128 154 203 255 30591 116 144 171 221 276 32780 100 125 150 200 250 30089 114 141 168 219 273 324117 146 178 206 260 321 375117 146 178 206 260 321 37529 32 35 37 41 48 5179 86 98 98 111 117 13043 48 51 52 62 67 73 3051.6 1.6 1.6 1.6 1.6 1.6 1.623 23 23 23 25 30 338 8 8 12 12 16 1620 20 20 20 22 27 30表3 ANSI 400RF公称通径DN 20 25 32 40 50 65 80 100 125 150 200 250 300外径D 117 124 133 156 165 191 210 254 279 318 381 445 521螺栓孔中连接凸出心圆直径部分直径D1 82.5 89 98 114 127 149 168 200 235 270 330 387 451 D2 43 51 64 73 92 105 127 157 186 216 270 324 381按用户要求Amm内径B 28 35 43 50 62 75 91 116 144 171 221 276 327 C 20 25 32 40 50 65 80 100 125 150 200 250 300焊接处颈部颈根部直径 E 27 34 42 48 60 73 89 114 141 168 219 273 324 54 64 70 84 100 117 146 178 206 260 321 375 F直径G 48 54 64 70 84 100 117 146 178 206 260 321 375法兰厚度J 22 24 27 29 32 35 38 41 45 48 54 60 64焊接法兰长度L1 64 68 73 76 79 86 89 95108 110 124 130 143 L2 32 33 35 38 43 48 52 57 60 64 75 79 86 311 235 L3连接凸出螺栓孔部分高度L 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4直径d 19 19 19 23 19 23 23 25 25 25 30 33 35数量n 4 4 4 4 8 8 8 8 8 12 12 16 16螺栓直径M 16 16 16 20 16 20 20 22 22 22 27 30 32美标法兰标准凸面表4 ANSI 600RF公称通径DN 20 25 32 40 50 65 80 100 125 150 200 250 300外径D 117 124 133 156 165 191 210螺栓孔中连接凸出心圆直径部分直径D1 82.5 89 98 114.5 127 149 168 D2 43 51 64 73 92 105 127 157 186 216 270 324 381按用户要求 Amm内径B 28 35 43 50 62 75 91 116 144 171 221 276 327 C 20 25 32 40 50 65 80 100 125 150 200 250 300焊接处颈部直径 E 27 34 42 48 60 73 89 114 141 168 219 273 324 54 64 70 84 100 117 F颈根部直径G 48 54 64 70 84 100 117法兰厚度J 22 24 27 29 32 35 38 45 51 54 62 70 73焊接法兰长度L1 64 68 73 76 79 86 89 108 121 124 140 159 162 L2 32 33 35 38 43 48 52 57 67 73 83 92 98 311 235 L3连接凸出螺栓孔部分高度L 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4直径d 19 19 19 23 19 23 23 25 30 33 36 36 36数量n 4 4 4 4 8 8 8 8 8 12 12 16 20螺栓直径M 16 16 16 20 16 20 20 22 27 30 33 33 33273 330 356 419 508 559216 266.5 292 349 432 489152 191 222 273 343 400152 189 222 273 343 400表5 ANSI 900RF公称通径DN 20 25 32 40 50 65外径D 130 149 159 178 216 244螺栓孔中连接凸出心圆直径部分直径D1 89 101.5 111 124 165 190.5 D2 43 51 64 73 92 105 A mm内径B 28 35 43 50 62 75 C 20 25 32 40 50 65焊接处颈部颈根部直径 E 27 34 42 48 60 73 52 63.5 70 105 124 F直径G 44 52 64 70 105 124法兰厚度J 32 35 35 38 45 48焊接法兰长度L1 76 79 79 89 108 111 L2 41 48 48 51 64 70 L3 235连接凸出螺栓孔部分高度L 6.4 6.4 6.4 6.4 6.4 6.4直径 d 23 25 25 30 25 30数量n 4 4 4 4 8 8螺栓直径M 20 22 22 27 22 27按用户要求美标法兰标准凸面80 100 125 150 200 250 300241 292 349 381 470 546 610190.5 235 279.5 317.5 393.5 470 533.5127 157 186 216 270 324 38191 116 144 171 221 276 32780 100 125 150 200 250 30089 114127 159127 159 191 235 298 368 41945 51 58 62 70 76 86108 121 133 146 168 191 20660 76 86 92 108 114 124 3116.4 6.4 6.4 6.4 6.4 6.4 6.425 33 36 33 39 39 398 8 8 12 12 16 2022 30 33 30 36 36 36141 190.5 168 219 273 324 235 298 368 419表6 ANSI 1500RF公称通径DN 20 25 32 40 50 65 80 100 125 150 200 250 300外径D 130 149 159 178 216 244 267 311 375 394 483 584 673螺栓孔中心圆直径D1 89 101.5 111 124 165 190.5 203 241.5 292 317.5 393.5 482.5 571.5连接凸出部分直径D2 43 51 64 73 92 105 127 157 186 216 270 324 381 mm内径焊接处颈部直颈根部径C 20 25 32 40 50 65 80 100 125 150 200 250 300 E 27 34 42 48 60 73 89 114 141 168 219 273 324 52 63.5 70 105 124 133 162 197 229 292 368 451 F直径G 44.5 52 63.5 70 105 124法兰厚度J 32 35 35 39 45 48焊接法兰长度连接凸出螺栓孔部分高度L 6.4 6.4 6.4 235 6.4 6.4 6.4 6.4 6.4 311 6.4 6.4 6.4 311∫ 514 6.4 6.4直径d 23 25 25 30 25 30 33 35 42 45 45 51 55 16数量螺栓直径M 20 22 22 27 22 27 30 32 39 42 42 48 52AB 28 35 43 50 62L1 76 79 79 89 108 111 124 130 162 178 219 260 289L2 41 48 48 51 64 70 79 97 111 125 149 165 187L3n 4 4 4 4 8 8 8 8 8 12 12 12按用户要求75 91 116 144 171 221 276 327133 162 170 229 __ 45154 61 80 89 99 115 131美标法兰标准凸面表7 ANSI 2500RF公称通径DN 20 25 32 40 50 65 80 100 125 150 200 250 300外径D 140 159 184 203 235 267 305 356 419 483 552 673 762螺栓孔中心圆直径D1 98 108 130 146 171.5 197 228.5 273 324 368.5 438 539.5 619连接凸出部分直径D2 43 51 63.5 73 92 105 127 157 186 216 270 324 381按用户要求A内径mm焊接处颈部直颈根部径C 20 25 32 40 50 65 80 100 125 150 200 250 300 E 27 34 42 48 60 73 89 114 141 168 219 273 324 57 73 79 95 114 133 165 203 235 305 375 441 F直径G 51 57 73 79 95 114 133 165 203 235 305 375 441法兰厚度J 38 41 45 51 57 64 73 83 98 114 133 172 191焊接法兰长度连接凸出螺栓孔部分高度L 6.4 6.4 6.4 6.4 6.4 6.4 311 6.4 6.4 6.4 6.4 6.4 311∫ 514 6.4 6.4直径d 23 25 30 33 30 33 36 42 48 55 55 67 75数量螺栓直径M 20 22 27 30 27 30 33 39 45 52 52 64 72B 28 35 43 50 62 75 91 116 144 171 221 276 327L1 86 95 102 118 133 149 175 197 235 279 324 426 470L2 49 54 59 67 76 86 98 114 137 159 184 235 260L3 235n 4 4 4 4 8 8 8 8 8 8 12 12 12美标法兰标准凸面二、ANSI 150、300、600、900、1500、2500RJ法兰尺寸表表8 ANSI 150RJ公称通径DN 25 40 50 65 80 100 125 150 200 250 300外径D 108 127 152 178 190 229 254 279 343 406 483螺栓孔中连接凸出心圆直径部分直径D1 79.5 98.5 120.5 139.5 152.5 190.5 216 241.5 298.5 362 432 D2 63.5 82.6 101.6 120.6 133.4 171.4 193.7 219.1 273 330.2 406.4mm内径D3 25 38 51 64 76 102 127 152 203 254 305法兰厚度t 20.7 23.9 25.5 28.7 30.3 30.3 30.3 31.8 35 36.6 38.2连接凸出部分高度 f 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4梯形槽中梯形槽深心圆直径L 47.6 65.1 82.6 101.6 114.3 149.2 171.5 193.6 247.7 304.8 381度E 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4梯形槽宽螺栓孔数度F 8.7 8.7 8.7 8.7 8.7 8.7 8.7 8.7 8.7 8.7 8.7量与直径n-d 4-15 4-15 4-19 4-19 4-19 8-19 8-23 8-23 8-23 12-25 12-25螺栓直径M 12 12 16 16 16 16 20 20 20 22 22美标法兰标准凸面表9 ANSI 300RJ公称通径DN 20 25 40 50 65 80 100 125 150 200 250 300外径D 117 124 156 165 190 210 254 279 318 381 444 521mm螺栓孔中连接凸出心圆直径部分直径D1 82.5 89 114.5 127 149 168 200 235 270 330 387.5 451 D2 63.5 69.8 90.5 108 127 146 174.6 209.6 241.3 301.6 355.6 412.5内径D3 19 25 38 51 64 76 102 127 152 203 254 305法兰厚度t 22.3 23.9 27.1 30.3 33.4 36.6 46.1 43 44.6 49.3 55.7 58.8连接凸出部分高度f 6.4 6.4 6.4 8 8 8 8 8 8 8 8 8梯形槽中梯形槽深心圆直径L 42.9 50.8 68.3 82.6 101.6 123.8 149.2 181.0 211.1 269.9 323.9 381度E 6.4 6.4 6.4 8 8 8 8 8 8 8 8 8梯形槽宽螺栓孔数度F 8.7 8.7 8.7 11.9 11.9 11.9 11.9 11.9 11.9 11.9 11.9 11.9量与直径n-d 4-19 4-19 4-23 8-19 8-23 8-23 8-23 8-2312-23 12-25 16-30 16-33螺栓直径M 16 16 20 16 20 20 20 20 20 22 27 30表10 ANSI 600RJ公称通径DN 20 25 40 50 65 80外径D 117 124 156 165 190 210螺栓孔中连接凸出心圆直径部分直径D1 82.5 89 114.5 127 149 168 D2 63.5 69.8 90.5 108 127 146 mm内径D3 19 25 38 51 64 76法兰厚度t 22.3 23.9 28.7 33.4 36.6 39.6连接凸出部分高度f 6.4 6.4 6.4 8 8 8梯形槽中梯形槽深心圆直径L 42.9 50.8 68.3 82.6 101.6 123.8度 E 6.4 6.4 6.4 8 8 8梯形槽宽螺栓孔数度F 8.7 8.7 8.7 11.9 11.9 11.9量与直径n-d 4-19 4-19 4-22 8-19 8-22 8-22螺栓直径M 16 16 20 16 20 20美标法兰标准凸面100 125 150 200 250 300273 330 356 419 508 559216 266.5 292 349 432 489174.6 209.6 241.3 301.6 355.6 412.8102 127 152 200 248 29846.1 52.5 55.7 63.6 71.5 74.78 8 8 8 8 8149.2 181.0 211.1 269.9 323.9 381.08 8 8 8 8 811.9 11.9 11.9 11.9 11.9 11.98-22 8-25 12-32 12-36 16-36 20-3622 27 30 33 33 33表11 ANSI 900RJ公称通径DN 80 100 125 150 200 250 300外径D 241 292 349 381 470 546 610螺栓孔中连接凸出心圆直径部分直径D1 190.5 235 279.5 317.5 393.5 470 533.5 D2 155.6 181 215.9 241.3 308 362 419.1mm内径D3 73 99 121 146 191 238 282法兰厚度t 46.1 52.5 58.8 63.6 71.5 77.9 87.4连接凸出梯形槽中梯形槽深梯形槽宽螺栓孔数部分高度心圆直径 f 8 8 8 8 8 8 8 L 123.8 149.2 181.0 211.1 270.0 323.9 381.0度E 8 8 8 8 8 8 8度F 11.9 11.9 11.9 11.9 11.9 11.9 11.9量与直径n-d 8-25 8-33 8-35 12-33 12-39 16-39 20-39螺栓直径M 22 30 32 30 36 36 36表12 ANSI 1500RJ公称通径DN 25 40 50 65 80外径D 149 178 216 244 267螺栓孔中连接凸出心圆直径部分直径D1 101.5 124 165 190.5 203 D2 71.4 92.1 123.8 136.5 168.3 mm内径D3 22 35 48 57 70法兰厚度t 35 38.2 46.1 49.3 55.7连接凸出部分高度f 6.4 6.4 8 8 8梯形槽中梯形槽深心圆直径L 50.8 68.3 95.3度 E 6.4 6.4 8 8 8梯形槽宽螺栓孔数度 F 8.7 8.7 11.9 11.9 11.9量与直径n-d 4-25 4-30 8-25 8-30 8-33螺栓直径M 22 27 22 27 30108 136.5美标法兰标准凸面100 125 150 200 250 300311 375 394 483 584 673241.5 292 317.5 393.5 482.5 571.5193.7 228.6 247.6 317.5 371.5 438.292 111 136 178 222 26462 81.1 92.2 103.3 119.2 138.28 8 9.6 11.2 11.2 14.3162 193.7 211.1 270 323.9 3818 8 9.6 11.2 11.2 14.311.9 11.9 13.5 16.7 16.7 23.08-36 8-42 12-39 12-45 12-51 16-5533 39 36 42 48 52表13 ANSI 2500RJ公称通径DN 25 40 50 65 80 100 125 150 200 250 300外径D 159 203 235 267 305 356 419 483 552 673 762螺栓孔中连接凸出心圆直径部分直径D1 108 146 171.5 197 228.5 273 324 368.5 438 539.5 619 D2 82.6 114.3 133.4 149.2 168.3 203.2 241.3 279.4 339.7 425.5 495.3内径D3 19 28 38 48 57 73 92 111 146 184 219mm法兰厚度t 41.4 52.5 58.8 66.8 76.3 87.4 104.8 120.7141.3 182.6 201.7连接凸出部分高度f 6.4 8 8 9.6 9.6 11.2 12.7 12.7 14.3 17.5 17.5梯形槽中梯形槽深心圆直径L 60.3 82.6 101.6 111.1 127 157.1 190.5 228.6 279.4 342.6 406.4度E 6.4 8 8 9.6 9.6 11.2 12.7 12.7 14.3 17.5 17.5梯形槽宽螺栓孔数度F 8.7 11.9 11.9 13.5 13.5 16.7 19.8 19.8 23.0 30.2 33.4量与直径n-d 4-25 4-33 8-30 8-33 8-36 8-42 8-48 8-55 12-55 12-67 12-74螺栓直径M 22 30 27 30 33 39 45 52 52 64 72美标法兰标准凸面三、JIS 10K、16K、20K、30K、40K、63K、RF、FF法兰尺寸表表14 JIS 10K、RF、FF公称通径DN 20 25 40 50 65 80 100 125 150 200 250 300外径D 100 125 140 155 175 185 210 250 280 330 400 415直径D1 75 90 105 120 140 150 175 210 240 290 355 400mm螺栓孔中心圆连接凸出部分直径D2 58 70 85 100 120 130 155 185 215 265 325 370内径D3 19 25 38 51 61 76 102 125 152 204 254 305法兰厚度t~连接凸出部分螺栓孔数量与高度 f 1 1 2 2 2 2 2 2 2 2 2 3直径n-d 4-15 4-19 4-19 4-19 4-19 8-19 8-19 8-23 8-23 8-23 12-25 16-25螺栓直径M 12 16 16 16 16 16 16 20 20 20 22 2214/ 18 14/18 16/20 16/ 20 18/ 22 18/22 18/ 24 20/ 24 22/ 26 22/ 26 24/ 30 24/ 32美标法兰标准凸面表15 JIS 16K、RF、FF公称通径DN 20 25 40 50 65 80 100 125 150 200 250 300外径D 100 125 140 155 175 200 225 270 305 350 430 480直径D1 75 60 105 120 140 160 185 225 260 305 380 430mm螺栓孔中心圆连接凸出部分直径D2 58 70 85 100 120 135 160 195 230 275 345 395内径D3 19 25 38 51 64 76 102 125 152 204 254 305法兰厚度t~连接凸出部分螺栓孔数量与高度 f 1 1 2 2 2 2 2 2 2 2 2 3直径n-d 4-15 4-19 4-19 8-19 8-19 8-23 8-23 12-25 12-25 12-25 12-27 16-27螺栓直径M 12 16 16 16 16 20 20 22 22 22 24 2414/ 18 14/18 16/20 16/ 20 18/ 22 20/ 24 22/ 26 22/ 26 24/ 28 26/ 30 28/ 34 30/ 36表16 JIS 20K、RF、FF公称通径DN 20 25 40 50 65 80外径 D 100 125 140 155 175 200直径D1 75 90 105 120 140 160 mm螺栓孔中心圆连接凸出部分直径D2 58 70 85 100 120 135内径D3 19 25 38 51 64 76法兰厚度t~连接凸出部分螺栓孔数量与高度 f 1 1 2 2 2 2直径n-d 4-15 4-19 4-19 8-19 8-19 8-23螺栓直径M 12 16 16 16 16 2016/ 18 16/ 20 18/ 22 18/22 20/ 24 22/ 26美标法兰标准凸面100 125 150 200 250 300225 270 305 350 430 480185 225 260 305 380 430160 195 230 275 345 395102 125 152 204 254 30524/ 28 26/ 30 28/ 32 30/ 34 34/ 38 36/ 402 2 2 2 2 38-23 8-25 12-25 12-25 12-27 16-2720 22 22 22 24 24~t值中较小值为钢及可锻铸铁法兰；较大值为铸铁法兰。