3.6法兰类型及适用范围

法兰类型及适用范围应符合表4的规定，表中“”表示适用，“一”表示不适用

GB/T9124.2—2019表4法兰类型及适用范围法兰公称尺寸公称压力Class密封面型式类型DNNPS1503006009001 5002500及适用范围152034L251VVV3214VVVV401%VVV502VV652VVVL1)平面（FF)：Class150；803VVV2)突面（RF）：Class150~1004VVClass2500;整体125V3）凹凸面（MF）：Class300~5VVVV法兰Class2500;(IF)1506VVV4)样槽面（TG)：Class300~2008VVVVVVClass2500;25010 VVVVV5)环连接面（RJ)：Class150~Class250030012 VVVVV35014 VVV40016 VV45018 VVVVV50020VVVVV55022VVVVV60024VVVV15 VVV20VVV251VVVVV3214VVVV401%VVVVV带颈502VVVVV螺纹652%VVVV法兰V突面(RF):Class150~Class2500(Th)803VVVV1004V一1255VV1506VVV2008VVVV25010 VVV5

电线电缆标准GB/T 9124.22019

GB/T 9124.22019

4.1法兰的密封面尺寸

兰的密封面尺寸应符合图1图4及表5～表6的

图1突面（RF)法兰

图2凹凸面（MF）法兰

图3椎槽面（TG)法兰

GB/T 9124.22019

图4环连接面（RD法兰

表5突面、凹凸面、椎槽面的法兰密封面尺寸

表6环连接面的法兰密封面尺寸

GB/T 9124.22019

4.2法兰的型式与尺寸

4.2.1整体钢制管法兰的型式与尺寸

整体钢制管法兰的型式应符合图5～图9的规定，法兰密封面尺寸应符合表5～表6的规定，法兰 其他尺寸应符合表7表12的规定。

5平面（FF)整体钢制

GB/T 9124.22019

突面（RF)整体钢制管法

Z凹凸面（MF）整体钢

E相同司，但不受梯形槽深度尺寸E公基的限制 允许采用如虚线所示轮廓的全平面型式

图8椎槽面（TG)整体钢制管法兰

图9环连接面（RI整体钢制管法兰

GB/T 9124.2—2019表7Class150整体钢制管法兰尺寸连接尺寸公称尺寸法兰法兰颈螺栓法兰法兰螺栓孔中心螺栓最小壁厚厚度内径外径圆直径孔径数量螺纹t min /mmDNNPSC*/mmN/mmr/mmB/mmD/mmK/mmL/mmn/个规格159060.3164M148.0302.813 203410069.9164M148.9383.21925111079.416 4M149.6494.02532111588.9164M1411.2594.832401K12598.416 4M1412.7654.838502150120.719 4M1614.3785.651 652V2180139.719 4M1615.9905.664803190152.419 4M1617.51085.6761004230190.519 8M1622.31356.41021255255215.9228M2022.31647.1127≥41506280241.3228M2023.91927.115220088345298.5228M2027.02467.920325010405362.02612 M2428.63058.725430012485431.82612M2430.23659.5 30535014 535476.32912 M2733.440010.333740016595539.82916M2735.045711.138745018635577.93216 M3038.150511.943850020700635.03220M3041.355912.748955022750692.23520M3344.561060024 815749.33520M3346.166314.5591对于平面法兰，法兰厚度可以按本表规定，也可以在本表的法兰厚度数据值上加上2mm。表8Class300整体钢制管法兰尺寸连接尺寸公称尺寸螺栓法兰法兰颈最小法兰法兰螺栓孔中心螺栓孔厚度壁厚内径外径圆直径直径数量螺纹C/mmt min /mmB/mmDNNPSD/mmK/mmL/mmn/个规格N/mmr/mm159566.7164M1412.738203411582.619 4M1614.348≥425112588.9194M1615.9544.82516

GB/T9124.2—2019表8（续）连接尺寸公称尺寸法兰法兰颈最小螺栓法兰法兰螺栓孔中心螺栓孔厚度壁厚内径外径圆直径直径数量螺纹C/mmIni/mmB/mmDNNPSD/mmK/mmL/mmn/个规格N/mmr/mm321413598.419 4M1617.5644.832401/155114.3224M2019.1704.838502165127.019 8M1620.7846.4 51652V190149.2228M2023.91006.4 64803210168.3228M2027.01177.1761004255200.022M2030.21467.9102125280235.0228M2033.41789.51271506320269.92212 M2035.02069.51522008380330.22612 M2439.7260≥>411.120325010445387.42916M2746.132112.725430012 520450.83216M3049.337514.330535014 585514.43220M3052.442515.933740016650571.53520M3355.648317.538745018710628.63524M3358.853319.043250020775685.83524M3362.058720.648355022840743.04224M3965.164060024 915812.84224M3968.370223.8584表9Class600整体钢制管法兰尺寸连接尺寸法兰法兰颈公称尺寸法兰螺栓孔中螺栓孔螺栓厚度外径心圆直径直径数量螺纹C/mmN/mmD/mmK/mmL/mmn/个规格r/mmDNNPS159566.7164M1414,3382011582.6194M1615.94825112588.9194M1617.554321413598.4194M1620.764≥4401%155114.3224M2022.370502165127.0198M1625.484652V190149.2228M2028.610017

GB/T 9124.2—2019表9（续）连接尺寸法兰法兰颈公称尺寸法兰螺栓孔中螺栓孔螺栓厚度外径心圆直径直径数量螺纹C/mmD/mmK/mmL /mmN/mm规格r/mmDNNPSn/个803210168.322M2031.81171004275215.9268M2438.11521255330266.7298M2744.51891506355292.12912M2747.72222008420349.23212M3055.627325010510431.83516M3363.534330012560489.03520M3366.7400≥435014605527.03920M3669.943240016685603.24220M3976.249545018745654.04520M4282.654650020815723.94524M4288.961055022870777.74824M4595.266360024940838.25124M48101.6718表10Class900整体钢制管法兰尺寸连接尺寸法兰法兰颈公称尺寸法兰螺栓孔中心螺栓孔螺栓厚度外径圆直径直径数量螺纹C/mmN/mmNPSD/mmK/mmL/mmn/个规格r/mmDN1512082.6224M2022.3382013088.9224M2025.444251°150101.626M2428.652 321X160111.1264M2428.664 401/*180123.8294M2731.870502*215165.1268M2438.1105≥465245190.5298M2741.3124803240190.5268M2438.11271004290235.0328M3044.51591255350279.435M3350.81901506380317.53212M3055.623518

GB/T 9124.2—2019表10（续）连接尺寸法兰法兰颈公称尺寸法兰螺栓孔中心螺栓孔螺栓厚度外径圆直径直径数量螺纹C/mmD/mmK/mmL /mmN/mm规格r/mmDNNPSn/个2008470393.73912 M3663.529825010545469.93916M3669.936830012610533.43920M3679.441935014640558.84220M3985.8451≥440016705616.04520M4288.950845018785685.85120M48101.656550020855749.35520M52108.0622600241 040901.76720M64139.7749NPSV(DN15)~NPS2（DN65）的法兰使用Class1500法兰的尺寸。表 11Class1500整体钢制管法兰尺寸连接尺寸法兰法兰颈公称尺寸法兰螺栓孔中心螺栓孔螺栓厚度外径圆直径直径数量螺纹C/mmD/mmK/mmL /mmN/mmDNn/个规格r/mmNPS1512082.622M2022.338203413088.9224M2025.444251150101.6264M2428.6523214160111.1264M2428.664401/180123.8294M2731.870502215165.1268M2438.1105652V245190.52980M2741.3124803265203.232M3047.7133≥41004310241.3358M3354.01621255375292.1428M3973.11971506395317.53912 M3682.6229200485393.74512 M4292.129225010 585482.65112 M48108.036830012675571.55516M52123.945135014 750635.06016M56133.449519

GB/T 9124.2—2019表11（续）连接尺寸法兰法兰颈公称尺寸法兰螺栓孔中心螺栓孔螺栓厚度外径圆直径直径数量螺纹C/mmD/mmK/mmL/mmn/个N/mm规格r/mmDNNPS40016 825704.86716M64146.155245018915774.77316M70162.0597≥450020985831.87916M76177.8641600241 170990.69316M90203.2762表12Class2500整体钢制管法兰尺寸连接尺寸法兰法兰颈公称尺寸法兰螺栓孔中螺栓孔螺栓厚度外径心圆直径直径数量螺纹C/mmN /mmD/mmK/mmL /mmn/个规格r/mmDNNPS1513588.9224M2030.243203414095.2224M2031.851251160108.0264M2435.057321X185130.2294M2738.173401%205146.0324M3044.579502235171.42980M2750.995652V265196.832M3057.2114≥4803305228.6358M3366.71331004355273.0428M3976.21651255420323.848M4592.12031506485368.3558M52108.02352008550438.25512 M52127.030525010675539.86712 M64165.137530012 760619.17312 M70184.24414.2.2带颈螺纹钢制管法兰的型式与尺寸带颈螺纹钢制管法兰的型式应符合图10的规定，法兰密封面尺寸应符合表5的规定，法兰其他尺寸应符合表13～表18的规定。20

GB/T9124.2—2019N7X/RKD图10突面(RF)带颈螺纹钢制管法兰表13Class150带颈螺纹钢制管法兰连接尺寸法兰法兰法兰颈公称尺寸螺栓最小螺纹钢管外径法兰螺栓孔中螺栓孔厚度高度长度A/mm外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmTmin / mmD/mmDNNPSK/mmL/mmn/个规格1521.39060.3164M149.61430162026.910069.9164M1411.214381625133.711079.4164M1412.71649173242.411588.9164M1414.3195921401/48.312598.4164M1415.921652250260.3150120.7194M1617.5247825652V73.0180139.719M1620.727902980388.9190152.4194M1622.329108301004114.3230190.5198M1622.332135331255141.3255215.9228M2022.33516436>41506168.3280241.3228M2023.938192402008219.1345298.5228M2027.0432464425010273.0405362.02612M2428.6483054930012323.9485431.82612 M2430.2543655635014355.6535476.32912 M2733.4564005740016406.4595539.82916M2735.0624576445018457635577.93216M3038.1675056850020508700635.03220M3041.3715597355022559750692.23520M3344.57861060024610815749.33520M3346.1816638321

GB/T9124.2—2019表14Class300带颈螺纹钢制管法兰连接尺寸公称尺寸钢管螺栓孔螺栓法兰法兰法兰颈最小螺最小沉孔外径法兰螺栓孔中心圆厚度高度纹长度直径A/mm外径直径直径数量螺纹C/mmH/mmTmin /mmQmin /mmDNNPSD/mmL/mmn/个规格K/mmN/mmr/mm15 21.39566.7164M1412.721381623.6203426.911582.6194M1614.324481629.02533.712588.9194M1615.925541835.8321/442.413598.4194M1617.525642144.4401/248.3155114,322M2019.129702350.350260.3165127.0198M1620.732842963.5652%73.0190149.2228M2023.9371003276.280388.9210168.3228M2027.0411173292.21004114.3255200.0228M2030.246 14637117.61255141.3280235.0228M2033.449 17843144.4>41506168.3320269.92212M2035.05120647171.42008219.1380330.22612M2439.76026051222.225010273.0445387.42916M2746.16532156276.230012323.9520450.83216M3049.371375 61328.635014355.6585514.43220M3052.47542564360.440016406.4650571.53520M3355.68148369411.245018457710628.63524M3358.88753370462.050020508775685.83524M3362.09458774512.855022559840743.04224M3965.110064060024610915812.84224M3968.310570283614.4表15Class600带颈螺纹钢制管法兰连接尺寸公称尺寸钢管螺栓法兰法兰法兰颈螺栓孔最小螺最小沉孔外径法兰螺栓中心圆厚度高度纹长度直径外径A/mm孔直径直径数量螺纹C/mmH/mmTmin/mmQmin /mmD/mmDNNPSK/mmL/mmn/个规格N/mmr/mm1521.39566.7164M1414.322381623.620326.911582.6194M1615.92548≥41629.025133.712588.9194M1617.527541835.822

GB/T9124.2—2019表15（续）连接尺寸公称尺寸钢管螺栓法兰法兰法兰颈螺栓孔最小螺最小沉孔外径法兰螺栓中心圆厚度高度纹长度直径外径孔直径A/mm直径数量螺纹C/mmH/mmTmin / mmQmin /mmDNNPSD/mmL/mmK/mmn/个规格N/mmr/mm321442.413598.4194M1620.729642144.4401/48.3155114.3224M2022.332702350.650260.3165127.0198M1625.437842963.5652/73.0190149.2228M2028.641 1003276.280388.9210168.3228M2031.8461173592.21004114.3275215.9268M2438.15415242117.61255141.3330266.7298M2744.56018948144.41506168.3355292.12912M2747.76722251171.420000219.1420349.23212M3055.676273≥458222.225010273.0510431.83516M3363.58634366276.230012323.9560489.03520M3366.79240070328.635014355.6605527.03920M3669.99443274360.440016406.4685603.24220M3976.210649578411.245018457745654.04520M4282.611754680462.050020508815723.94524M4288.912761083512.855022559870777.74824M4595.213366360024610940838.25124M48101.614071893614.4表16Class900带颈螺纹钢制管法兰连接尺寸公称尺寸钢管螺栓法兰法兰法兰颈螺栓孔最小螺最小沉孔外径法兰螺栓中心园厚度高度纹长度直径外径A/mm孔直径直径数量螺纹C/mmH/mmTmin / mmQmin /mmDNNPSD/mmL/mmn/个规格K/mmN/mmr/mm1521.312082.6224M2022.332382323.6326.913088.9224M2025.435442629.025133.7150101.6261M2428.64152≥42935.8321442.4160111.1264M2428.641643144.4401V48.3180123.8294M2731.844703250.623

GB/T 9124.2—2019表16（续）连接尺寸公称尺寸钢管螺栓法兰法兰法兰颈螺栓孔最小螺最小沉孔外径法兰螺栓中心圆厚度高度纹长度直径外径孔直径A/mm直径数量螺纹C/mmH/mmTmin / mmQmin /mmDNNPSD/mmL/mmK/mmn/个规格N/mmr/mm50260.3215165.1268M2438.1571053963.5652V73.0245190.5298M2741.36412448 76.280388.9240190,5268M2438.154 1274292.21004114.3290235.0328M3044.57015948117.61255141.3350279.4358M3350.879190 54 144.41506168.3380317.53212M3055.68623558171.42008219.1470393.73912M3663.510229864222.2≥425010273.0545469.93916M3669.910836872276.230012323.9610533.43920M3679.411741977328.635014355.6640558.84220M3985.813045183360.440016406.4705616.045 20M4288.913350886411.245018457785685.85120M48101.615256589462.050020508855749.35520M52108.015962293512.8600246101 040901.76720M64139.7203749102614.4表17Class1500带颈螺纹钢制管法兰连接尺寸公称尺寸钢管螺栓法兰法兰法兰颈螺栓孔最小螺最小沉孔外径法兰螺栓中心圆厚度高度纹长度直径外径孔直径A/mm直径数量螺纹C/mmH/mmTmin /mmQi / mmDNNPSD/mmL/mmn/个规格K/mmN/mmr/mm15 21.312082.6224M2022.332382323.620326.913088.9224M2025.435442629.025133.7150101.626M2428.641522935.8321442.4160111.1264M2428.64164≥43144.4401%48.3180123.829M2731.844703250.6750260.3215165.1268M2438.1571053963.5652元73.0245190.529M2741.3641244876.224

GB/T 9124.2—2019表18Class2500带颈螺纹钢制管法兰连接尺寸公称尺寸钢管螺栓孔螺栓法兰法兰法兰颈最小螺最小沉孔外径法兰螺栓中心圆厚度高度纹长度直径外径孔直径A/mm直径数量螺纹C/mmH/mmTmin /mmQmin/mmDNNPSD/mmL/mmK/mm/个规格N/mmr/mm1521.313588.922M2030.240432923.6203426.914095.222M2031.843513229.02533.7160108.026M2435.048573535.83242.4185130,2294M2738.15273≥43944,4401岁48.3205146.032M3044.560794550.650260.3235171.4298M2750.970955163.5652V73.0265196.8328M3057.2791145876.24.2.3对焊钢制管法兰的型式与尺寸对焊钢制管法兰的型式应符合图11～图15的规定，法兰密封面尺寸应符合表5～表6的规定，法兰其他尺寸应符合表19～表24的规定，表中法兰内径B相当于采用标准管表号的尺寸，对于未规定的法兰内径B或采用其他管表号的钢管，应根据用户要求或钢管尺寸确定法兰内径B。D图11平面（FF)对焊钢制管法兰25

GB/T 9124.22019

图12突面（RF)对焊钢制管法兰

图13凹凸面（MF）对焊钢制管法兰

图14槿槽面（TG对焊钢制管法兰

图15环连接面（RI)对焊钢制管法兰

GB/T9124.2—2019表19Class150对焊钢制管法兰法兰焊端连接尺寸法兰法兰法兰颈螺栓法兰公称尺寸外径（钢法兰螺栓孔中螺栓孔厚度高度内径管外径)外径心圆直径直径数量螺纹C*/mmH/mmD/mmN/mmr/mmB/mmA/mmDVNPSK/mmL/mmn/个规格1521.39060.3164M149.63015.8203426.910069.9164M1411.2513820.925133.711079.4164M1412.754 4926.6321V42.411588.9164M1414.3565935.1401岁48.312598.4164M1415.9606540.950260.3150120.7194M1617.5627852.5652%73.0180139.7194M1620.7689062.780388.9190152.4194M1622.36810877.91004114.3230190.5198M1622.375135102.31255141.3255215.9228M2022.387164128.2≥41506168.3280241.3228M2023.987192154.12008219.1345298.5228M2027.0100246202.725010273.0405362.02612 M2428.6100305254.630012323.9485431.82612M2430.2113365304.835014355.6535476.32912 M2733.412540040016406.4595539.82916M2735.0125457按用户450M3038.1规定或18457635577.93216138505根据钢50020508700635.03220M3041.3143559管尺寸55022559750692.23520M3344.5148610确定60024610815749.33520M3346.1151663对于平面法兰，法兰厚度可以按本表规定，也可以在本表的法兰厚度数据上加2mm。表 20Class300对焊钢制管法兰连接尺寸法兰焊端法兰法兰法兰颈法兰公称尺寸外径（钢法兰螺栓孔中螺栓孔螺栓厚度高度内径管外径)外径心圆直径直径数量螺纹c/mmH/mmB/mmA/mmD/mmK/mmL/mm规格N/mmr/mmDNPSn/个1521.39566.7164M1412.7513815.82026.911582.6194M1614.35648≥420.925133.712588.9194M1615.9605426.628

GB/T9124.2—2019表20（续）法兰焊端连接尺寸法兰法兰法兰颈法兰公称尺寸外径（钢法兰螺栓孔中螺栓孔螺栓厚度高度内径管外径)外径心圆直径直径数量螺纹C/mmH/mmD/mmN/mmr/mmB/mmA/mmDNNPSK /mmL/mmn/个规格321/442.413598.4194M1617.5646435.1401/248.3155114.3224M2019.1677040.950260.3165127.0198M1620.7688452.5652V73.0190149.2228M2023.97510062.780388.9210168.3228M2027.07811777.91004114.3255200.0228M2030.284146102.3125141.3280235.0228M2033.497178128.2150168.3320269.92212 M2035.097206154.12008219.1380330.22612M2439.7110260≥4202.725010273.0445387.42916M2746.1116321254.630012323.9520450.83216M3049.3129375304.835014355.6585514.43220M3052.414142540016406.4650571.53520M3355.6144483按用户58.8规定或45018457710628.63524M33157533根据钢50020508775685.83524M3362.0160587管尺寸55022559840743.04224M3965.1164640确定60024610915812.84224M3968.3167702表 21Class600对焊钢制管法兰法兰焊端连接尺寸法兰法兰法兰颈公称尺寸螺栓法兰外径（钢法兰螺栓孔中螺栓孔厚度高度内径管外径)外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmB/mmA/mmD/mmDNNPSK/mmL/mmn/个规格15 21,39566.7164M1414.3523820326.911582.6194M1615.95748由用户25133.712588.9194M1617.56254规定或321%42.413598.4194M1620.76764≥4根据钢40148.3155114.322M2022.37070管尺寸4确定50260.3165127.0198M1625.47384652岁73.0190149.2228M2028.67910029

GB/T 9124.22019

表22Class900对焊钢制管法兰

GB/T 9124.2—2019表22（续）法兰焊端连接尺寸法兰法兰法兰颈公称尺寸螺栓法兰外径（钢法兰螺栓孔中螺栓孔厚度高度内径管外径)外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmB/mmNPSA/mmDND/mmK/mmL/mmn/个规格2008219.1470393.73912 M3663.516229825010273.0545469.93916M3669.918436830012323.9610533.43920M3679.4200419由用户规定或35014355.6640558.84220M3985.8213451≥4根据钢40016406.4705616.04520M4288.9216508管尺寸45018457785685.851 20M48101.6229565确定50020508855749.35520M52108.0248622600246101 040901.76720M64139.7292749注：NPS(DN15)～NPS2%（DN65）的法兰使用Class1500法兰的尺寸。表 23Class1500对焊钢制管法兰法兰焊端连接尺寸法兰法兰法兰颈公称尺寸法兰外径（钢法兰螺栓孔中螺栓孔螺栓厚度高度内径管外径）外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmB/mmDNNPSA/mmD/mmK/mmL/mmn/个规格1521.312082.6224M2022.36038203426.913088.9224M2025.4704425133.7150101.6264M2428.67352321442.4160111.1261M2428.67364401K48.3180123.8294M2731.8837050260.3215165.1268M2438.1102105652/73.0245190.5298M2741.310512480388.9265203.2328M3047.7117133由用户1004114.3310241.3358M3354.0124162规定或125141.3375292.1428M3973.1156197≥4根据钢1506168.3395317.53912 M3682.6171229管尺寸20000219.1485393.74512 M4292.1213292确定25010273.0585482.651 12 M48108.025436830012323.9675571.55516M52123.928345135014355.6750635.06016M56133.429849540016406.4825704.86716M64146.131155245018457915774.77316M70162.032759750020508985831.87916M76177.8356641600246101170990.69316M90203.240676231

GB/T 9124.22019

表24Class2500对焊钢制管法兰

4.2.4带颈平焊钢制管法兰的型式与尺寸

带颈平焊钢制管法兰的型式应符合图16～图20的规定，法兰密封面尺寸应符合表5～表6的规 定，法兰其他尺寸应符合表25～表29的规定

图16平面（FF)带颈平焊钢制管法兰

图17突面（RF)带颈平焊钢制管法兰

图18凹凸面（MF）带颈平焊钢制管法兰

GB/T 9124.22019

凸出部分高度与梯形槽深度尺寸E相同，但不受尺寸E公差的限制 允许采用如虚线所示轮廊的全平面型式

图19椎槽面（TG）带颈平焊钢制管法兰

图20环连接面（RD)带颈平焊钢制管法兰

GB/T 9124.2—2019表25Class150带颈平焊钢制管法兰连接尺寸法兰法兰法兰颈螺栓法兰公称尺寸钢管外径法兰螺栓孔中螺栓孔厚度高度内径A/mm外径心圆直径直径数量螺纹C* /mmH/mmN/mmr/mmB/mmDVNPSD/mmK/mmL/mmn/个规格1521.39060.3164M149.6143022.2203426.910069.9164M1411.2143827.725133.711079.4164M1412.7164934.5321V42.411588.9164M1414.3195943.2401岁48.312598.4164M1415.9216549.550260.3150120.7194M1617.5247861.9652%73.0180139.7194M1620.7279074.680388.9190152.4194M1622.32910890.71004114.3230190.5198M1622.332135116.11255141.3255215.9228M2022.335164143.8≥41506168.3280241.3228M2023.938192170.72008219.1345298.5228M2027.043 246221.525010273.0405362.02612M2428.648305276.230012323.9485431.82612M2430.254365327.035014355.6535476.32912 M2733.456400359.240016406.4595539.82916M2735.062457410.545018457635577.93216M3038.167505461.850020508700635.03220M3041.371559513.155022559750692.23520M3344.578610564.460024610815749.33520M3346.181663616.0对于平面法兰，法兰厚度可以按本表规定，也可以在本表的法兰厚度数据上加上2mm。表26Class300带颈平焊钢制管法兰连接尺寸法兰法兰法兰颈法兰公称尺寸钢管外径法兰螺栓孔中螺栓孔螺栓厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmB/mmD/mmK/mmL/mmN/mmr/mmDNPSn/个规格1521.39566.7164M1412.7213822.226.911582.6194M1614.348≥427.725133.712588.9194M1615.9255434.535

GB/T 9124.2—2019表26（续）连接尺寸法兰法兰法兰颈螺栓法兰公称尺寸钢管外径法兰螺栓孔中螺栓孔厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmD/mmH/mmN/mmr/mmB/mmDNNPSK /mmL/mmn/个规格321442.413598.4194M1617.5256443.2401/248.3155114.3224M2019.1297049.550260.3165127.0198M1620.7328461.9652V73.0190149.2228M2023.93710074.680388.9210168.3228M2027.04111790.71004114.3255200.0228M2030.246146116.1125141.3280235.0228M2033.449178143.8150168.3320269.92212 M2035.051206170.72008219.1380330.22612M2439.760260≥4221.525010273.0445387.42916M2746.165321276.230012323.9520450.83216M3049.371375327.035014355.6585514.43220M3052.475425359.240016406.4650571.53520M3355.681483410.545018457710628.63524M3358.887533461.850020508775685.83524M3362.094587513.155022559840743.04224M3965.1100640564.460024610915812.84224M3968.3105702616.0表 27Class600带颈平焊钢制管法兰连接尺寸法兰法兰法兰颈公称尺寸螺栓法兰钢管外径法兰螺栓孔中螺栓孔厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmB/mmD/mmDNK/mmNPSL/mmn/个规格15 21,39566.7164M1414.3223822.220326.911582.6194M1615.9254827.725133.712588.9191M1617.5275434.5321X42.413598.4194M1620.72964≥443.2401K48.3155114.3224M2022.3327049.550260.3165127.0198M1625.4378461.92V73.0190149.2228M2028.64110074.636

GB/T9124.2—2019表27（续）连接尺寸法兰法兰法兰颈螺栓法兰公称尺寸钢管外径法兰螺栓孔中螺栓孔厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmD/mmN/mmr/mmB/mmDVNPSK /mmL/mmn/个规格388.9210168.3228M2031.84611790.71004114.3275215.9268M2438.154152116.1125141.3330266.7298M2744.560189143.81506168.3355292.12912M2747.767222170.72008219.1420349.23212 M3055.676273221.525010273.0510431.83516M3363.586343276.230012323.9560489.03520M3366.792400≥4327.035014355.6605527.03920M3669.994432359.240016406.4685603.24220M3976.2106495410.545018457745654.04520M4282.6117546461.850020508815723.94524 M4288.9127610513.155022559970777.74824M4595.2133663564.460024610940838.251 24M48101.6140718616.0表 28Class900带颈平焊钢制管法兰连接尺寸法兰法兰法兰颈公称尺寸螺栓法兰钢管外径法兰螺栓孔中螺栓孔厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmB/mmDNNPSD/mmK/mmL/mmn/个规格1521.312082.6224M2022.3323822.2203426.913088.9224M2025.4354427.725133.7150101.6264M2428.6415234.5321442.4160111.1264M2428.6416443.2401/48.3180123.8294M2731.8447049,550260.3215165.1268M2438.157105≥461.9652%73.0245190.5298M2741.36412474.680388.9240190.5268M2438.15412790.71004114.3290235.0328M3044.570159116.11255141.3350279.4358M3350.879190143.81506168.3380317.53212 M3055.686235170.737

GB/T 9124.2—2019表28（续）连接尺寸法兰法兰法兰颈法兰公称尺寸钢管外径法兰螺栓孔中螺栓孔螺栓厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmB/mmDNNPSD/mmK/mmL/mmn/个规格20000219.1470393.73912 M3663.5102298221.525010273.0545469.93916M3669.9108368276.230012323.9610533.43920M3679.4117419327.035014355.6640558.84220M3985.8130451359.2≥440016406.4705616.04520M4288.9133508410.545018457785685.85120M48101.6152565461.850020508855749.35520M52108.0159622513.1600246101 040901.76720M64139.7203749616.0注：NPS(DN15)～NPS2K（DN65）的法兰使用Class1500法兰的尺寸。表 29Class1500带颈平焊钢制管法兰连接尺寸法兰法兰法兰颈螺栓法兰公称尺寸钢管外径法兰螺栓孔中螺栓孔厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmN/mmr/mmB/mmDNNPSD/mmK/mmL/mmn/个规格1521.312082.6224M2022.3323822.22026.913088.9224M2025.4354427.725133.7150101.6264M2428.6415234.5321442.4160111.1264M2428.64164≥443.2401/48.3180123.829M2731.8447049.550260.3215165.1268M2438.110561.9652/273.0245190.5298M2741.36412474.64.2.5带颈承插焊钢制管法兰的型式与尺寸带颈承插焊钢制管法兰的型式应符合图21～图25的规定，法兰密封面尺寸应符合表5～表6的规定，法兰其他尺寸应符合表30～表33的规定，38

图21平面（FF）带颈承插焊钢制管法兰

图22突面（RF）带颈承插焊钢制管法兰

GB/T 9124.22019

面（MF）带颈承插焊钢制

维槽面（TG）带颈承插焊

GB/T 9124.2—2019)23°凸出部分高度与梯形槽深度尺寸E相同，但不受尺寸E公差的限制。允许采用如虚线所示轮廊的全平面型式图25环连接面（RJ)带颈承插焊钢制管法兰表30Class150带颈承插焊钢制管法兰连接尺寸钢管法兰法兰公称尺寸螺栓法兰颈法兰法兰螺栓孔中螺栓孔承插孔外径厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmB/mmD/mmK/mmL/mmDNNPS规格N/mmr/mmB,/mmT/mm15/221.39060.316M149.6143015.822.2102026.910069.916M1411.2143820.927.711 2533.711079.416M112.7164926.634.5133242.411588.916M145935.143.214401%48.312598.41615.96540.949.5165060.3150120.719M1617.5247852.561.917 652%73.0180139.7194M1620.7279062.774.61980388.9190152.419M1622.32910877.990.721对于平面法兰，法兰厚度可以按本表规定，也可以在本表的法兰厚度数据值上加上2mm。41

GB/T 9124.2—2019表311Class300带颈承插焊钢制管法兰连接尺寸公称尺寸钢管法兰法兰法兰颈法兰法兰螺栓孔中螺栓孔螺栓承插孔外径厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmB/mmDNNPSD/mmK/mmL/mm规格N/mmr/mmB,/mmT/mm1521.39566.716M1412.7213815.822.2102026.911582.619M1614.3244820.927.7112533.712588.919M1615.9255426.634.513321442.413598.419M1617.5256435.143.21440148.3155114.322M2019.1297040.949.51650260.3165127.0198M1620.7328452.561.917652%73.0190149.2228M2023.93710062.774.6198088.9210168.3228M2027.04111777.990.721表32Class600带颈承插焊钢制管法兰连接尺寸钢管螺栓法兰法兰法兰公称尺寸法兰螺栓孔中螺栓孔法兰颈承插孔外径厚度高度内径A/mm外径心圆直径直径数量螺纹C/mmH/mmB/mmDNNPSD/mmK/mmL/mmn/个规格N/mmr/mmB/mmT/mm15221.39566.716M1414.3223822.21020小26.911582.619M1615.9254827.71125133.712588.919M1617.5275434.513321V13598.419M1629由用42.420.76443.214>4户规401岁48.3155114.322M2022.33270定49.51650260.3165127.0198M1625.4378461.917652/273.0190149.2228M2028.64)10074.61980388.9210168.3228M2031.84611790.72142

GB/T 9124.2—2019表33Class900和Class1500带颈承插焊钢制管法兰连接尺寸钢管螺栓法兰法兰法兰颈法兰公称尺寸法兰螺栓孔中螺栓孔承插孔外径厚度高度内径外径A/mm心圆直径直径数量螺纹C/mmH/mmB/mmDNNPSD/mmK/mmL/mm个规格N/mmr/mmB, /mmT/mm1521.312082.6224M2022.3323822.2103426.913088.922M2025.4354427.711 25133.7150101.626M2428.64152由用34.513321V42.4160111.126M2428.64164>4户规43.2141%48.3180123.829M2731.870定4044449.51650260.3215165.1268M2438.15710561.917652%73.0245190.5298M2741.36412474.6194.2.6对焊环带颈松套钢制管法兰的型式与尺寸对焊环带颈松套钢制管法兰的型式应符合图26～图27的规定，法兰密封面尺寸应符合表5～表6的规定，法兰其他尺寸应符合表34～表39的规定Rt1为短节壁厚，一般为钢管壁厚；t2应不小于钢管最小壁厚，图26突面(RF)对焊环带颈松套钢制管法兰43

GB/T 9124.22019

为短节壁厚，一般为钢管壁厚；1.应不小于钢管最

图27环连接面（RI）对焊环带颈松套钢制管法兰

表34Class150对焊环带颈松套钢制管法兰

表35Class300对焊环带颈松套钢制管法兰

GB/T9124.2—2019表35（续）连接尺寸钢管螺栓螺栓孔法兰法兰法兰颈法兰对焊环公称尺寸外径法兰螺栓孔厚度高度部直径内径r/r2/中心圆高度外径直径A/mm数量螺纹C/mmBmia /mmmmmm直径H/mmN/mmh/mmD/mmL/mmK/mmn/个规格DNNPS1506168.3320269.92212M2036.652206171.41313902008219.1380330.22612M2441.362260222.2131310025010273.0445387.42916M2747.795321277.4131325030012323.9520450.83216 M3050.8102375328.213 13 25035014355.6585514.43220M3054.0111425360.2131330040016406.4650571.535M3357.2121483411.2131330045018457710628.63524M3360.4130533462.313 1330050020508775685.83524M3363.5140587514.4131330055022559840743.04224M3966.7145640565.2131330060024610915812.84224M3969.9152702616.01313300表36Class600对焊环带颈松套钢制管法兰连接尺寸钢管螺栓公称尺寸螺栓孔法兰法兰法兰颈法兰对焊环外径法兰螺栓孔厚度高度部直径内径r/r2/中心圆高度外径直径A/mm数量螺纹C/mmnH/mmN/mmBmin /mmmmmm直径h/mmD/mmK/mmL/mmn/个规格DNNPS1521.39566.7164M1414.3223822.93350203426.911582.619 4M1615.9254828.2336525133.712588.919 4M1617.5275434.93365321/442.413598.419 M1620.7296443.75565401/248.3155114.322M2022.332 7050.0667550260.3165127.0198M1625.4378462.5875652/273.0190149.2228M2028.64110075.4889080388.9210168.3228M2031.84611791.410101001004114.3275215.92680M2438.154152116.811 11125125141.3330266.72980M2744.560189144.4115111501506168.3355292.12912 M2747.767222171.413 13 175200219.1420349.23212M3055.676273222.213 1319046

表37Class900对焊环带颈松套钢制管法兰

固定资产标准GB/T 9124.22019

表38Class1500对焊环带颈松套钢制管法兰

表39Class2500对焊环带颈松套钢制管法

4.2.7钢制管法兰盖的型式与尺寸

盖的型式应符合图28～图32的规定，密封面尺寸应符合表5～表6的规定，其他尺寸 45的规定。

钢制管法兰盖的型式应符合图28～图32的规定，密封面尺寸应符合表5～表6的规定， 应符合表40~表45的规定

电力弱电管理、论文图28平面(FF)钢制管法兰盖

GB/T 9124.22019