SN 565-2003 Welding-neck and blind flanges PN 250(

January2003Welding-neckandblindflangesPN250SN565DimensionsinmmThisstandardonflangeswasdevelopedonthebasisofDIN2628DesignationofaweldingneckflangeofsizeDN125withpipedimensions168.3x28.0insteelC22.8(C22G2)WeldingneckflangeSN565–125/168.3x28.0C22.8Table1PNbarNom.dia.offlangeDbkd1d2d3d4h1h2rs1)BoltsDIN2510Orderingexample1)Weightkg/pc.250401853413548,3268488801066,34xM2440/48,3x6,3C22.86,6250401853413560,3268488801068,04xM2440/60,3x8,0C22.87,2250502003815076,126951028510610,08xM2450/76,1x10,0C22.89,2250652304218088,9261241229512611,08xM2465/88,9x11,0C22.814,32508025546200114,33013613810212814,28xM2780/114,3x14,2C22.820,025010030054235139,73316416212014825,08xM30100/139,7x25,0C22.832,025012534060275168,33320018814016828,012xM30125/168,3x28,0C22.846,025015039068320193,736240218160181032,012xM33150/193,7x32,0C22.872,025020048582400273,042305285190251045,012xM39200/273,0x45,0C22.8120,0Material:C22.8(C22G2)Design:TechnicaldeliveryconditionsasinDIN2519IndicationofsurfaceroughnessRainµm1)Otherwallthicknessesarepossible(ensureconformitywithpipe-classspecifications)Continuedonpages2and3Bearbeitet:Normung/Standardisierung18.05.25WeldseampreparationasinDIN2559Edgeform3Edgeform22NoguaranteecanbegiveninrespectofthistranslationInallcasesthelatestGerman-languageversionofthisstandardshallbetakenasauthoritativeThiscopywillnotbeupdatedincaseofchanges!Page2SN565:2003-01DesignationofablindflangeofsizeDN125inS355J2G3BlindflangeSN565-125S355J2G3Table2PNbarNom.dia.offlange(DN)DbKd2NumberofboltholesForthreadWeightkg/pc.2504018534135264M246,62505020038150268M248,12506523042180268M2412,32508025546200308M2716,325010030054235338M3027,0250125340602753312M3037,9250150390683203612M3357,2250200485824004212M39108,2Material:S355J2G3(St52-3)Design:Technicaldeliveryconditionsacc.toDIN2519IndicationofsurfaceroughnessRainµmPage3SN565:2003-01Flange-typecouplingFlangeconnectionTable3BoltsandnutsaccordingtoDIN2510Nom.dia.offlange(DN)ForflangecouplingForflangeconnectionb2)t1t3NutTighteningtorqueSpiralgasketSN904404xLM24x1304xHRM24x1103138,545NFM24165Nm48x109508xLM24x1408xHRM24x1203138,545NFM24125Nm57x124658xLM24x1508xHRM24x1203138,545NFM24165Nm73x153808xLM27x1658xHRM27x13033,54148NFM27240Nm86x1701008xLM30x1858xHRM30x15037,546,554,5NFM30370Nm108x20212512xLM30x20012xHRM30x15037,546,554,5NFM30330Nm134x24215012xLM33x22012xHRM33x170404958NFM33475Nm162x28420012xLM39x26012xHRM39x200475767,5NFM391000Nm213x358Inthecombinationofweldingneckflangeandblindflange,thelengthsoftheboltsareidenticalwiththoseofacompleteflange-typecoupling.Thesameapplieswhenablindflangeisusedforclosingaconnectionbore.AssemblynoteDuringassemblyitisabsolutelyimportantthatthenutsbetighteneduniformlyandindiagonallyoppositesequencewithatorquewrench.Materialofboltandnut:25CrMo4+QTRevisionofJanuary2003PreviouseditionAdditionofsealaccordingtoSN,2001-02,2001-03,2001-07,2001-11revisionofnominaldiameter(DN)data,additionofnoteonassembly.2)b=usefulthreadlengthSpiralgasketacc.toSN904