JB-T 81-1994（JB81-1994）板式平焊法兰 完整规格尺寸表

JB/T81-1994（JB81-1994）板式平焊法兰完整规格尺寸表一、标准说明标准全称：JB/T81-1994板式平焊钢制管法兰（替代旧代号JB81-1994）适用类型：板式平焊法兰（PL）、钢制、光滑密封面（RF）、常压/中低压管道通用压力等级：PN0.6、PN1.0、PN1.6、PN2.5（bar）适用介质：水、蒸汽、空气、油品等常规工业介质常用材质：20#、Q235B、16Mn、不锈钢系列结构特点：平焊板式、无颈、角焊缝焊接、结构简单、造价低、应用最广二、尺寸符号释义DN：公称通径；D：法兰外径；b：法兰厚度；d：密封面直径；K：螺栓中心圆直径；n：螺栓数量；M：螺栓规格；理论重量：单法兰净重（kg）三、PN0.6（6公斤）板式平焊法兰尺寸表DN公称通径管子外径法兰外径D螺栓中心圆K密封面d法兰厚度b螺栓数量n螺栓规格M理论重量(kg)1518805540124M100.3352025906550144M100.53625321007560144M100.64132381209070144M120.925404513010080144M121.060505714011090144M121.3486573160130110144M121.6708089185150125164M162.480100108205170145164M162.890125133235200175188M163.940150159260225200188M164.470175194290255230208M165.540200219315280255208M166.0702502733703353102212M168.0303003254303953622212M2010.3003503774804454122412M2012.5904004265304954622416M2015.2004504805805455122416M2017.7005005296305955622616M2020.670四、PN1.0（10公斤）板式平焊法兰尺寸表DN公称通径管子外径法兰外径D螺栓中心圆K密封面d法兰厚度b螺栓数量n螺栓规格M理论重量(kg)1518956545144M120.51120251057555164M120.74825321158565164M120.890323814010078184M161.400404515011088184M161.5805057165125102204M162.0906573185145122204M162.8408089200160138228M163.240100108220180158228M164.010125133250210188248M165.400150159285240212248M206.120175194310270238268M207.440200219340300268268M208.8002502733953553202812M2010.7003003254454003702812M2012.9003503775054604303016M2015.9004004265655154823216M2421.8004504806155655323220M2424.4005005296706205853420M2427.700五、PN1.6（16公斤）板式平焊法兰尺寸表DN公称通径管子外径法兰外径D螺栓中心圆K密封面d法兰厚度b螺栓数量n螺栓规格M理论重量(kg)1518956545144M120.71120251057555164M120.86725321158565164M121.174323814010078184M161.600404515011088184M161.8005057165125102204M162.6106573185145122228M163.4508089200160138248M163.710100108220180158248M164.800125133250210188268M166.100150159285240212268M207.9201751943102702382812M208.8102002193403002683012M2010.2002502734053603203212M2215.7003003254604103703412M2218.1003503775204704303616M2223.3004004265805254823816M2729.4004504806405855324020M2734.9005005297056505854220M3055.100六、PN2.5（25公斤）板式平焊法兰尺寸表DN公称通径管子外径法兰外径D螺栓中心圆K密封面d法兰厚度b螺栓数量n螺栓规格M理论重量(kg)1518956545164M120.80420251057555184M120.98525321158565184M121.174323814010078204M161.700404515011088224M162.0005057165125102244M162.7106573185145122248M163.2208089200160138268M164.060100108235190162288M206.000125133270220188308M227.800150159300250218308M2210.4001751943302802453212M2211.9002002193603102783412M2214.2002502734253703353612M2719.9003003254854303904016M2727.5003503775504904504416M3034.3504004266105505054816M3344.7004504806606005555020M3351.3005005297306606105220M3667.300七、标准配套说明（工程必看）1.密封面形式：本表全部为RF光滑突面密封，适配普通橡胶垫、四氟垫、石棉垫。2.焊接要求：板式平焊法兰为内外双面角焊缝焊接，不得单面焊接。3.