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这个是用来表达管件连接形式的；给楼主一份中英文对照还有缩写吧缩写中文名称英文名称P管子PipeEL弯头ElbowELL长半径弯头LongradiuselbowELS短半径弯头ShortradiuselbowMEL斜接弯头（虾米腰弯头）MitreelbowREL异径弯头ReducingelbowT三通TeeLT斜三通LateralteeRT异径三通ReducingteeR异径管接头（大小头）ReducerCR同心异径管接头（同心大小头）ConcentricreducerER偏心异径管接头（偏心大小头）EccentricreducerCPL管箍CouplingFCPL双头管箍FullcouplingHCPL单头管箍HalfcouplingRCPL异径管箍ReducingcouplingBU内外螺纹接头BushingUN活接头UnionHC软管接头HosecouplerSE翻边短节StubendNIP短节PipenippleorstraightnippleSNIP异径短节SwagednippleCP管帽（封头）CapPL管堵（丝堵）PlugBLK盲板BlankSB8字盲板Spectacleblind（blank）RP补强板Reinforcingpad法兰缩写中文名称英文名称PLG法兰FlangeWNF对焊法兰WeldingneckflangeSOF平焊法兰Slip-onflangeSWF承插焊法兰Socket-weldingflangeT螺纹法兰ThreadedflangeLJ松套法兰LappedjointflangeREDF异径法兰ReducingflangeBF法兰盖（日法兰）BlindflangeFSF法兰密封面FlangescalingfaceFF全平面FlatfaceRF凸台面RaisedfaceMFF凹凸面MaleａndfemalefaceLF凹面FemalefaceLM凸面MalefaceRJ环连接面RingjointfaceTG榫槽面TongueａndgroovefaceTF榫面TonguefaceGF槽面Grooveface垫片缩写中文名称英文名称G垫片GasketNMG非金属垫片Non-metallicgasketAG石棉垫片AsbestosgasketRG橡胶垫片RubbergasketTEG聚四氟乙烯包复垫片PTFEenvelopegasketSMG半金属垫片SemimetallicgasketMJG金属包垫片Meta-jacketgasketSWG缠绕式垫片SpiralwoundgasketMG金属垫片MetallicgasketFMG金属平垫片FlatmetallicgasketSMSG齿形金属垫片SolidmetalserratedgasketLER透镜式金属环垫LensringgasketOCR八角形金属环垫OctagonalringgasketOVR椭圆形金属环垫OvalringgaksetIR/OR内外定位环InnerringａndouterringIR内定位环InnerringOR外定位环Outerring坚固件缩写中文名称英文名称B螺栓BoltSB螺柱StudboltNU螺母NutTB花蓝螺母TurnbuckleWSR垫圈WasherSWSR弹簧垫圈Springwasher阀门缩写中文名称英文名称GV闸阀GatevalveGLV截止阀GlobevalveCHV止回阀CheckvalveBUV蝶阀ButterflyvalveBAV球阀BallvalvePV旋塞阀Plugvalve（cock）CV调节阀ControlvalveSV安全阀SafetyvalveRV减压阀PressurereducingvalveST蒸汽疏水阀SteamtrapPRV泄压阀PressurreliefvalveBV呼吸阀BreathervalveNV针形阀NeedlevalveAV角阀DV隔膜阀TWV三通阀SGV插板阀管道上用的小型设备缩写中文名称英文名称SPR气液分离器SeparatorFA阻火器FlamearresterSR过滤器StrainerSRYY型过滤器Y-typestrainerSRTT型过滤器T-typestrainerSRB桶式过滤器BuckettypestrainerTSR临时过滤器TemporarystrainerSIL消声器SilencerSG视镜SlightglassSC取样冷却器SamplecoolerDF排液漏斗DrainfunnelLM管道混合器LinemixerRO限流孔板RestrictionorificeMO混合孔板MixingorificeRD爆破片（爆破膜）RupturediskEJ补偿器Expansionjoint隔热、伴热中文名称英文名称INS隔热ThermalinsulationH保温HotinsulationC保冷ColdinsulationP防烫伤隔热PersonnelprotectioninsulationT&I伴热Tracingａndinsulation管道伴热（冷）TracingEST蒸汽外伴热ExternalsteamtracingIST蒸汽内伴热InternalsteamtracingSJT蒸汽夹套伴热Steam-jackettracingET电伴热Electrictracing配管材料和等级缩写中文名称英文名称M金属材料MetallicmaterialCS碳钢CarbonsteelCAS铸钢CaststeelFS锻钢ForgedsteelAS合金钢AlloysteelSS不锈钢StainlesssteelAUST奥氏体不锈钢Austeniticstainless-steelCI铸铁CastironMI可锻铸铁MalleableironDI球墨铸铁DuctileironAL铝AluminumBRS黄铜BrassBRZ青铜BronzeCU紫铜CopperLAS低合金钢LowalloysteelFLAS低合金锻钢ForgedlowalloysteelCLAS低合金铸钢CastlowalloysteelTHK壁厚ThicknessSCH表号SchedulenumberSTD标准StandardXS加强ExtrastrongXXS特强Doubleextrastrong装置布置缩写中文名称英文名称CN建北ConstructionnorthE东EastW西WestS南SouthN北NorthH水平HorizontalV竖直、铅直、直立VerticalGRD地坪GroundUG地下UndergroundBL装置边界线BatterylimitlineESEW事故沐浴洗眼器EmergencyshowerａndeyewasherHS软管站HosestationML接续分界线MatchlinePS管道支架（管架）PipingsupportPR管桥PiperackSTRU构架（构筑物）StructureBLDG建筑物BuildingPD清扫设施PurgedevicePT池PitSHLT棚ShelterCOFF围堰CofferdamFL楼板FloorPF平台Plateform尺寸标注缩写中文名称英文名称EL标高ElevationBOP管底BottomofpipeCOP管中心CenterofpipeTOP管顶TopofpipeFOB底平FlatonbottomFOT顶平FlatontopCL（屯）中心线CenterlineTL切线TangentlineSYM对称的SymmetricalBOS支架底BottomofsupportTOS支架顶TopofsupportCL净距（净空）ClearanceCTC中心至中心CentertocenterCTF中心至面CentertofaceCTE中心至端部CentertoendETE端到端EndtoendFEF法兰端面FlangeａndfaceFTF面到面FacetofaceD直径DiameterDN公称直径NominaldiameterID内径InsidediameterOD外径OutsidediameterDIM尺寸DimensionMAX最大MaximumMIN最小MinimumAVG平均AverageAPP约、近似ApproximatePT.EL点标高Pointelevation图表缩写中文名称英文名称PFD工艺流程图ProcessflowdiagramPID管道和仪表流程图Piping&instrumentdiagramCOD接续图ContinuedondrawingDTL详图DatailSPDWG（ISODWG）管段图Spooldrawing（eachlineisometricdrawing）DWGNO图号DrawingnumberDWGI所在图号DrawingidentificationLOW材料表ListofmaterialMTO汇料Materialtake-offAPPX附录AppendixJOB.No.工号JobNumberBEDD基础工程设计数据BasicengineeringdesigndataDEDD详细工程设计数据DetailengineeringdesigndataREV.No.修改号RecisionnumberREFDWG参考图ReferencedrawingSC采样接口Sampleconnection操作方式及工作参数缩写中文名称英文名称AUT自动AutomaticML手动ManualcontrolCHOP链条操作ChainoperatedCSC铅封关CarsealcloseCSO铅封开CarsealopenLC锁闭LockclosedLO锁开LockopenNC正常关NormallycloseNO正常开NormallyopenATM大气压AtmospherePN公称压力NominalpressureA绝压G表压（T）温度Temperature（P）压力Pressure施工缩写中文名称英文名称W焊接WeldingAW电弧焊ArcweldingGSAW气体保护电弧焊Gasshielded-acrweldingEFW电熔焊ElecricfusionweldingERW电阻焊ElectricResistanceweldingGW气焊GasweldingLW搭接焊LapweldingBW对焊ButtweldingTW定位焊TackweldingSW承插焊SocketweldingCW连续焊ContinuousweldingSEW密封焊SealweldingSFG堆焊SurfacingFW现场焊接FieldweldingHT热处理HeattreatmentPH预热PreheatingSR应力消除StressreliefPWHT焊后热处理PostweldheattreatmentEIT检查、探伤和实验Examination,inspection&testingVE外观检查VisualexaminationUI（UT）超声探伤Ultrasonicinspection（test）RI（RT）射线探伤Radiographicinspection（test）MPI（MT）磁粉探伤Magneticparticleinspection（test）LPI（PT）液体渗透检验Liquidpenterantinspection（test）HADT硬度实验HardnesstestingHYDT水压实验HydraulictestingPNET气压实验Pneumatictesting焊条CoveredelectrodeWW焊丝WeldingwireASSY装配、组合AssemblyF现场FieldF/F现场制造FieldfaricatedSF现场决定SuitinfieldCSP冷紧ColdspringBCT螺栓冷紧BoltcoldtighteningBHY螺栓热紧BolthottighteningCO清洗口CleanoutANNY退火AnnealedPE平端面PlainendBE坡口端BelelledendTHR螺纹ThreadHB布氏