標(biāo)準(zhǔn)解讀

《GB/T 9118.2-2000 環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭》是一項國家標(biāo)準(zhǔn)，主要針對的是工業(yè)管道系統(tǒng)中使用的特定類型法蘭。這類法蘭設(shè)計用于高壓或高溫環(huán)境下的流體輸送系統(tǒng)，其特點是具有一個可分離的環(huán)形墊圈和一個可以與管道焊接的頸部，這使得法蘭在安裝時更加靈活，并且能夠承受較高的壓力。

根據(jù)該標(biāo)準(zhǔn)，法蘭的制造需遵循嚴(yán)格的尺寸、材料選擇及加工要求，以確保其性能符合安全使用的需求。標(biāo)準(zhǔn)詳細(xì)規(guī)定了法蘭的公稱壓力（PN）、公稱直徑（DN）等關(guān)鍵參數(shù)，同時對法蘭面的形式也有明確說明，比如采用哪種密封方式來保證連接處的密封性。

此外，《GB/T 9118.2-2000》還涉及到了法蘭與其他部件（如閥門、泵等）之間的配合問題，通過標(biāo)準(zhǔn)化的設(shè)計使這些組件能夠相互兼容，從而簡化了安裝過程并提高了系統(tǒng)的整體可靠性。對于制造商而言，遵守這一標(biāo)準(zhǔn)意味著產(chǎn)品需要經(jīng)過嚴(yán)格的質(zhì)量控制流程，包括但不限于材料測試、尺寸測量以及最終產(chǎn)品的檢驗等步驟，以此來確保每一件出廠的產(chǎn)品都達(dá)到了規(guī)定的性能指標(biāo)。

該標(biāo)準(zhǔn)適用于化工、石油、天然氣等多個行業(yè)領(lǐng)域內(nèi)的管道連接應(yīng)用，為相關(guān)工程項目的規(guī)劃與實施提供了重要的參考依據(jù)。


如需獲取更多詳盡信息，請直接參考下方經(jīng)官方授權(quán)發(fā)布的權(quán)威標(biāo)準(zhǔn)文檔。

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  • 被代替
  • 已被新標(biāo)準(zhǔn)代替，建議下載現(xiàn)行標(biāo)準(zhǔn)GB/T 9118-2010
  • 2000-09-28 頒布
  • 2001-07-01 實施
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中華人民共和國國家標(biāo)準(zhǔn)環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭Loose hubbed steel pipe flanges with weldingneck collar with ring-joint faceGB/T 9118.22000代替GB/T 9118.39118.819881 范圍本標(biāo)準(zhǔn)規(guī)定了公稱壓力PN為2.0、5.0、11.0、15.0、26.0和42.0MPa的環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭的型式和尺寸。本標(biāo)準(zhǔn)適用于公稱壓力PN2.0PN42.0MPa的環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭。2 引用標(biāo)準(zhǔn)下列標(biāo)準(zhǔn)所包含的條文，通過在本標(biāo)準(zhǔn)中引用而構(gòu)成為本標(biāo)準(zhǔn)的條文。本標(biāo)準(zhǔn)出版時，所示版本均為有效。所有標(biāo)準(zhǔn)都會被修訂，使用本標(biāo)準(zhǔn)的各方應(yīng)探討使用下列標(biāo)準(zhǔn)最新版本的可能性。GB/T 91122000 鋼制管法蘭 類型與參數(shù)GB/T 91242000 鋼制管法蘭 技術(shù)條件3 法蘭的型式與尺寸 PN2.0、PN5.0、PN11.0、PN15.0、PN26.0和PN42.0MPa環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭的型式應(yīng)符合圖1的規(guī)定，尺寸應(yīng)符合表l表6的規(guī)定。4 法蘭的技術(shù)要求4.1 法蘭的技術(shù)要求應(yīng)符合GB/T 9124的規(guī)定。4.2 法蘭在不同溫度下的最大無沖擊工作壓力應(yīng)符合GB/T 91242000附錄A(標(biāo)準(zhǔn)的附錄)的規(guī)定。4.3 法蘭的焊接接頭型式和坡口尺寸應(yīng)符合GB/T 91242000附錄B(提示的附錄)的規(guī)定。5 標(biāo)記5.1 法蘭應(yīng)按公稱通徑、公稱壓力、密封面型式代號和標(biāo)準(zhǔn)編號進行標(biāo)記。5.2 法蘭密封面的型式代號應(yīng)符合GB/T 9112的規(guī)定。5.3 標(biāo)記示例公稱通徑80mm、公稱壓力5.0MPa(50bar)的環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭：法蘭 DN80-PN50 RJ GB/T 9118.22000國家質(zhì)量技術(shù)監(jiān)督局2000-09-28批準(zhǔn) 2001-07-01實施nL兩法蘭間距離S(近似值)NBAL1(L2)t2HCR2REEIR123FIPJKD注：t1為短節(jié)壁厚，一般為鋼管壁厚；t2應(yīng)不小于鋼管最小壁厚。圖1 環(huán)連接面（RJ）對焊環(huán)帶頸松套鋼制管法蘭（適用于PN2.0、PN5.0、PN11.0、PN15.0、PN26.0和PN42.0MPa）表1 PN2.0MPa(20bar)環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭 mm公稱通徑DN焊環(huán)端部外徑(鋼管外徑)A連 接 尺 寸密 封 面法蘭厚度C法蘭高度H頸部直徑N法蘭孔焊環(huán)高度兩法蘭間距離近似值S法蘭外徑D螺栓孔中心圓直徑K螺栓孔徑L螺栓槽號J minPEFR1 maxB minR、R2型L1型L2數(shù)量n螺紋規(guī)格2533.711079.5164M14R1563.547.626.358.740.814.517493531005043242.412089164M14R1773.057.156.358.740.816215943.551005044048.313098.5164M14R1982.565.076.358.740.817.522655061005045060.3150120.5184M16R22102.082.556.358.740.819.5257862.581506546573.0180139.5184M16R25121.0101.606.358.740.822.5299075.581506548088.9190152.5184M16R29133.0114.306.358.740.8243010891.51015065GB/T 9118.220004100114.3230190.5188M16R36171.0149.226.358.740.8243313511711150754125141.3255216228M20R40194.0171.456.358.740.82436164144.511200754150168.3280241.5228M20R42219.0193.686.358.740.825.540192171.513200904200219.1345298.5228M20R48273.0247.656.358.740。82945246222132001004250273.04053622612M24R52330.0304.806.358.?40.830.549305277.5132501254300323.94854322612M24R56406.0381.006.358.740.83256365328132501504350355.653547629.512M27R59425.0396.886.358.?40.8357940036013由用戶規(guī)定3400406.460054029.516M27R64483.0454.026.358.740.8378745741113345045763557832.516M30R68546.0517.526.358.740.84097505462.513350050870063532.520M30R72597.0558.806.358.740.843103559514.5133600610815749.535.520M33R76711.0673.106.358.740.84811166461613334表2 PN5.0MPa(50bar)環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭 mm公稱通徑DN焊環(huán)端部外徑(鋼管外徑)A連 接 尺 寸密 封 面法蘭厚度C法蘭高度H頸部直徑N法蘭孔焊環(huán)高度兩法蘭間距離近似值S法蘭外徑D螺栓孔中心圓直徑K螺栓孔徑L螺栓槽號J minPEFR1 maxB minR、R2型L1型L2數(shù)量n螺紋規(guī)格1521.39566.5164M14R1151.034.145.567.140.814.522382331005032026.912082.5184M16R1363.542.886.358.740.816.025482831005042533.712589.0184M16R1670.050.806.358.740.817.527543531005043242.413598.5184M16R1879.560.326.358.740.819.5276443.551005044048.3155114.5224M20R2090.568.286.358.740.821.030705061005045060.3165127.0188M16R22108.082.557.9211.910.822.5338462.5815065GB/T 9118.2200066573.0190149.0228M20R26127.0101.607.9211.910.825.53810075.581506568088.9210168.5228M20R31146.0123.827.9211.910.829.04311891.510150656100114.3255200.0228M20R37175.0149.227.9211.910.832.04814611711150756125141.3280235.0228M20R41210.0180.987.9211.910.835.051178144.511200756150168.3320270.02212M20R45241.0211.127.9211.910.837.052206171.513200906200219.1380330.02612M24R49302.0269.887.9211.910.841.562260222132001006250273.0445387.529.516M27R53356.0323.857.9211.910.848.095321277.5132501256300323.9520451.032.516M30R57413.0381.007.9211.910.851.0102375328132501506350355.6585514.532.520M30R61457.0419.107.9211.910.854.011142636013由用戶規(guī)定6400406.4650571.535.520M33R65508.0469.907.9211.910.857.5121483411136450457710628.535.524M33R69575.0533.407.9211.910.860.5130533462.5136500508775686.035.524M33R73635.0584.209.5213.491.563.5140587514.5136600610915813.04224M39R77749.0692.1511.1316.661.570.0152702616136表3 PN11.0MPa(110bar)環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭 mm公稱通徑DN焊環(huán)端部外徑(鋼管外徑)A連 接 尺 寸密 封 面法蘭厚度C法蘭高度H頸部直徑N法蘭孔焊環(huán)高度兩法蘭間距離近似值S法蘭外徑D螺栓孔中心圓直徑K螺栓孔徑L螺栓槽號J minPEFR1 maxB minR、 R2型L1型L2數(shù)量n螺紋規(guī)格1521.39566.5164M14R1151.034.145.567.140.814.522382331005032026.912082.5184M16R1363.542.886.358.740.816.025482831506542533.712589.0184M16R1670.050.806.358.740.817.527543531506543242.413598.5184M16R1879.560.326.358.740.821.0296443.551506544048.3155114.5224M20R2090.568.286.358.740.822.532705061507545060.3165127.0188M16R23108.082.557.9211.910.825.5378462.5815075GB/T 9118.2200056573.0190149.0228M20R26127.0101.607.9211.910.829.04110075.582009058088.9210168.5228M20R31146.0123.827.9211.910.832.04611791.5102001005100114.3275216.0268M24R37175.0149.227.9211.910.838.554152117112501255125141.3330267.029.58M27R41210.0180.987.9211.910.844.560189144.5112501505150168.3355292.029.512M27R45241.0211.127.9211.910.848.067222171.5133001755200219.1420349.032.512M30R49302.0269.887.9211.910.855.574273222133001905250273.0510432.035.516M33R53356.0323.857.9211.910.863.5111343277.5133502005300323.9560489.035.520M33R57413.0381.007.9211.910.867.0117400328133502503350355.6605527.03920M36R61457.0419.107.9211.910.870.012743236013由用戶規(guī)定5400406.4685603.04220M39R65508.0469.907.9211.910.876.5140495411135450457745654.04520M42R69575.0533.407.9211.910.883.0152546462.5135500508815724.04524M42R73635.0584.209.5213.491.589.0165610514.51355600610940838.05124M48R77749.0692.1511.1316.661.5102.01847186161366表4 PN15.0MPa(150bar)環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭 mm公稱通徑DN焊環(huán)端部外徑(鋼管外徑)A連 接 尺 寸密 封 面法蘭厚度C法蘭高度H頸部直徑N法蘭孔焊環(huán)高度兩法蘭間距離近似值S法蘭外徑D螺栓孔中心圓直徑K螺栓孔徑L螺栓槽號J minPEFR1 maxB minR、R2型L1型L2數(shù)量n螺紋規(guī)格15GB/T 9118.22000使用PN26.0MPa法蘭尺寸2025324050658088.9240190.5268M24R31156.0123.827.9211.910.838.55412791.5102501254100114.3290235.032.58M30R37181.0149.227.9211.910.844.570159117113001754125141.3350279.535.58M33R41216.0180.987.9211.910.851.079190144.5113002004150168.3380317.532.512M30R45241.0211.127.9211.910.856.086235171.5133002004200219.1470393.53912M36R49308.0269.887.9211.910.863.5114298222133002004250273.0545470.03916M36R53362.0323.857.9211.910.870.0127368277.5133502504300323.9610533.53920M36R57419.0381.007.9211.910.879.5143419328133502504350355.6640559.04220M39R62467.0419.1011.1316.661.586.015645136013由用戶規(guī)定4400406.4705616.04520M42R66524.0469.9011.1316.661.589.0165508411134450457785686.05120M48R70594.0533.4012.7019.841.5102.0191565462.5135500508855749.55520M52R74648.0584.2012.7019.841.5108.0210622514.51356006101040901.56820M64R78772.0692.1515.8826.972.4140.0292749616136表5 PN26.0MPa(260bar)環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭 mm公稱通徑DN焊環(huán)端部外徑(鋼管外徑)A連 接 尺 寸密 封 面法蘭厚度C法蘭高度H頸部直徑N法蘭孔焊環(huán)高度兩法蘭間距離近似值S法蘭外徑D螺栓孔中心圓直徑K螺栓孔徑L螺栓槽號J minPEFR1 maxB minR、R2型L1型L2數(shù)量n螺紋規(guī)格1521.312082.5224M20R1260.539.676.358.740.822.532382331507542026.913089.0224M20R1466.544.456.358.740.825.535442831507542533.7150101.5264M24R1671.550.806.358.740.829.041523532009043242.4160111.0264M24R1881.060.326.358.740.829.0416443.552009044048.3180124.029.54M27R2092.068.286.358.740.832.044705062009045060.3215165.0268M24R24124.095.257.9211.910.838.55710562.58250125GB/T 9118.2200036573.0245190.529.58M27R27137.0107.957.9211.910.841.56412475.5825015038088.9265203.032.58M30R35168.0136.527.9211.910.848.07313391.5102501503100114.3310241.535.58M33R39194.0161.927.9211.910.854.090162117113002003125141.3375292.0428M39R44229.0193.687.9211.910.873.5105197144.5113002003150168.3395317.53912M36R46248.0211.127.9213.491.583.0119229171.5133502503200219.1485393.54512M42R50318.0269.8811.1316.661. 592.0143292222133502504250273.0585482.55112M48R54371.0323.8511.1316.661.5108.0178368277.5134003004300323.9675571.55516M52R58438.0381.0014.2723.011.5124.0219451328134003005350355.6750635.06016M56R63489.0419.1015.8826.972.4133.524149536013由用戶規(guī)定6400406.4825705.06816M64R67546.0469.9017.4830.182.4146.5260552411138450457915774.57416M70R71613.0533.4017.4830.182.4162.0276597462.5138500508985832.08016M76R75673.0584.2017.4833.322.4178.0292641514.5131076006101170990.59416M90R79794.0692.1520.6236.532.4203.533076261613118表6 PN42MPa(420bar)環(huán)連接面對焊環(huán)帶頸松套鋼制管法蘭 mm公稱通徑DN焊環(huán)端部外徑(鋼管外徑)A連 接 尺 寸密 封 面法蘭厚度C法蘭高度H頸部直徑N法蘭孔焊環(huán)高度兩法蘭間距離近似值S法蘭外徑D螺栓孔中心圓直徑K螺栓孔徑L螺栓槽號J minPEFR1 maxB minR、R2型L1型L2數(shù)量n螺紋規(guī)格1521.313589.0224M20R1365.042.886.358.740.830.540432332009042026.914095.0224M20R1673.050.806.358.740.

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