机械部法兰标准JBT82.294.doc
中华人民共和国机械行业标准JB/T 82.2-94凹凸面对焊钢制管法兰代替JB82-59机械工业部 1994-12-09 批准1995-10-01 实施1范围本标准规定了公称压力PN为4.0、6.3、10、16、20 MPa的凹凸面对焊钢制管法兰的型式和尺寸。本标准适用于公称压力4.020 MPa 的低温压力容器用凹凸面对焊钢制管法兰。引用标准JB/T74-94 管路法兰 技术条件3 法兰的型式和尺寸应符合图1及表1表5。4 法兰的技术要求按JB/T74的规定。5 法兰的公称压力和不同温度下的最大允许工作压力按JB/T74附录B的规定。6 标记示例 公称通径300 mm、公称压力4.0MPa尺寸为系列2的凸面对焊钢制管法兰: 法兰 300-40A JB/T82.2-94 公称通径300 mm、公称压力4.0MPa尺寸为系列1的凹面对焊钢制管法兰: 法兰 300-40B(系列1) JB/T82.2-94）表1 PN4.0MPa凹凸面对焊钢制管法兰尺寸 mm公称通径DN法兰焊端外径(管子外径)A连接尺寸密封面尺寸法兰厚度C法兰高度H法兰内径B颈部直径Nmax圆角半径R法兰理论重量Kg法兰外径D系列1/系列2K螺栓孔直径L系列1/系列2螺栓螺柱dX系列1/系列2Y系列1/系列2ff1f2A型B型数量n螺纹Th 系列1/系列21015202532405065801001251501752002252503003504004505001418253238455773891081331581942192452733253774264805309095105115140/135150/145165/160185/180200/195235/230270300350375415450/445515/510580/570660/655685/680755606575851001101251451601902202502953203553854505105856106701414141418181818182326/2526/25303034343436/34414142/48444444488888121212121616162020M12M12M12M12M16M16M16M16M16M20M24/M22M24/M22M27M27M30M30M30M33/M30M36M36M39/M4240455565788510012013516018821825828231534540846553556061234395057657587109120149175203233259286312363421473523575354051586676881101211501752042342602873133644224745245762222233333333333444444444444444.54.54.54.54.54.54.54.55555161616161818202224262830363840424652586062353536384548485258686872888898102116120142146156812182531384866789612014517720022625230135139844849526303845566476961121381601862262502803103684184805305804555555666881010101012121214150.770.871.091.312.172.513.344.345.528.3911.0614.1621.8025.5632.4839.8755.9775.30112.02112.82142.700.670.770.971.181.982.142.923.855.037.7110.2713.3020.9724.7231.6039.0053.2172.29108.44109.70138.60表2 PN6.3MPa凹凸面对焊钢制管法兰尺寸 mm公称通径DN法兰焊端外径(管子外径)A连接尺寸密封面尺寸法兰厚度C法兰高度H法兰内径B颈部直径Nmax圆角半径R法兰理论重量Kg法兰外径D系列1/系列2K螺栓孔直径L系列1/系列2螺栓螺柱dX系列1/系列2Y系列1/系列2ff1f2A型B型数量n螺纹Th 系列1/系列2101520253240506580100125150175200225250300350400141825323845577389108133159194219245273325377426100105130/125140/135155/150170/165180/175205/200215/210250295345/340375/370415/405430470530600/59567070759010011012513516017020024028031034537040046052558514141818232323232326/2530343436/3436/3436/4136/414142/4844444448888812121212161616M12M12M16M16M20M20M20M20M20M24/M22M27M30M30M33/M30M33/M30M33/M36M33/M36M36M39/M42505568788295105130140168202240270300325352412475525343950576575871091201491752032332592863123634214733540515866768811012115017620423426028731336442247422222333333333334444444444444.54.54.54.54.54.54.54.555181820222424262830323638424446485460664848565862687075758098108110116120122136154170812182531374764779411814217419822224629434238634384852647486106120140172206232264290316370430484455555566688101010101212121.121.252.122.643.54.355.257.008.0711.5118.0226.4530.6339.6843.3453.6473.10103.5143.31.021.141.962.463.283.914.806.437.5010.817.0925.2929.6138.5143.3252.4769.97100.10138.90表3 PN10.0MPa 凹凸面对焊钢制管法兰尺寸 mm公称通径DN法兰焊端外径(管子外径)A连接尺寸密封面尺寸法兰厚度C法兰高度H法兰内径B颈部直径Nmax圆角半径R法兰理论重量Kg法兰外径D系列1/系列2K螺栓孔直径L系列1/系列2螺栓螺柱dX系列1/系列2Y系列1/系列2ff1f2A型B型数量n螺纹Th 系列1/系列2101520253240506580100125150175200225250300350400141825323845577389108133159194219245273325377426100105130/125140/135155/150170/165195220230265315/310355/350385/380430470505/50058566571570759010011012514517018021025029032036040043050056062014141818232326/2526/2526/253034343436/41414142/4848/5448/5444444448888812121212161616M12M12M16M16M20M20M24/M22M24/M22M24/M22M27M30M30M30M33/M36M36M36M39/M42M45/M48M45/M48505568788295112138148172210250280312352382442498558343950576575871091201491752032332592863123634214733540515866768811012115017620423426028731336442247422222333333333334444444444444.54.54.54.54.54.54.54.55518202224242628323438424648545660707680454856586270728490100115130135145165170195210220812182531374562759211213616619021223628433237634384852647686110124146180214246276312340400460510455555566688101010101212121.121.372.302.863.504.726.589.2010.6115.5425.1034.4341.6057.1473.3089.30107.45186.00223.501.011.262.132.673.284.286.028.609.9714.7024.0033.2640.4755.8071.9087.90130.10175.20218.50表4 PN16.0MPa 凹凸面对焊钢制管法兰尺寸 mm公称通径DN法兰焊端外径(管子外径)A连接尺寸密封面尺寸法兰厚度C法兰高度H法兰内径B颈部直径Nmax圆角半径R法兰理论重量Kg法兰外径D系列2K螺栓孔直径L系列2螺栓螺柱dX系列2Y系列2ff1f2A型B型数量n螺纹Th 系列215202532405065801001251501752002252503001825323845577389108133159194219245273325110130140165175215245260300355390460480545580665759010011512516519020524028531838040045048557018232325272530303441414848545454444444888881212121216M16M20M22M24M22M27M30M27M30M36M36M42M42M48M48M4855627285921321521682002382703253453904255103950576575871091201491752032332592863123634051586676881101211501762042342602873133642223333333333344444444444.54.54.54.54.54.54.54.52426283032364446486066767882881005055556065901051101201401551801852152302751118233237486270901181361581782002242684045526274106128138170206234270298346380460444555888101010101010101.732.503.164.705.7310.3316.0318.9226.9644.7250.8592.26104.66150.22184.30287.001.602.332.974.465.269.7615.2918.1325.9843.5556.5590.54102.85147.95182.00282.00表5 PN20.0MPa凹凸面对焊钢制管法兰尺寸 mm公称通径DN法兰焊端外径(管子外径)A连接尺寸密封面尺寸法兰厚度C法兰高度H法兰内径B颈部直径Nmax圆角半径R法兰理论重量Kg法兰外径D系列2K螺栓孔直径L系列2螺栓螺柱dX系列2Y系列2ff1f2数量n螺纹Th 系列2A型B型152025324050658010012515017520022525022283542486089108133168194219245273325120130150160170210260290360385440475535580670829010211512416020323029231836039444048357223232525272530344141484854585844444888881212121216M20M20M22M22M24M22M27M30M36M36M42M42M48M52M525562728590128165190245270305340380418508273441495569951151371691892132442673182835425056709711613817019021424526831922223333333333355555555666666626283032344048546676828492100110505555607095110125165170180190210240290141925313646688010213015017019221225440465464741051381622082342662943403744605555558881010101010102.052.643.784.685.6810.7619.6327.8054.0264.6289.73109.8156.7203.00319.61.942.523.624.525.3610.3619.0927.1953.3364.2289.30109.50156.00202.60319.60注:表1表5中系列1法兰连接尺寸与国标及德国法兰标准尺寸互换;系列2尺寸与原机标法兰尺寸互换;新产品设计应优先采用系列1尺寸. 表1表5中列出的法兰理论重量是指系列2法兰.企业补充规定：1 法兰选用规格 选用PN4、6.3、10、20MPa,尺寸为系列2的全部规格法兰,非本企业选用规格未经批准不得选用。2 材料：20，16Mn、1Cr18Ni9Ti；当DN250时应附材质证明。3 技术要求3.1表面粗糙度:密封面Ra12.5m,其余Ra25m，当采用模锻时，法兰背面、颈部表面和焊接管子端外圆表面为 。3.2加工完毕后,在法兰外圈柱面适当部位打上材料牌号和公称通径和10倍公称压力标志。例:DN100mm、PN4MPa的法兰打印通径压力标志为:DN100 PN40.3.3倒锐角去毛刺.3.4.法兰尺寸公差及其它技术要求按JB/T74规定.4 附加说明本标准由四川空分设备(集团)有限责任公司工程部负责转化本标准转化人:郭金道 杨乐本标准转化审核人:李铁林本标准转化批准人:景士衡本标准转化实施日期:1997-12-01
