化工设计常用管道仪表流程图物料代号和缩写词

《化工设计常用管道仪表流程图物料代号和缩写词》由会员分享，可在线阅读，更多相关《化工设计常用管道仪表流程图物料代号和缩写词（30页珍藏版）》请在装配图网上搜索。

1、管道仪表流程图物料代号和缩写词 1996-1215发布 1997-0101实施 中国石化兰州设计院目 次1 说明 （1)2 管道仪表流程图上的物料代号 （1）3 管道仪表流程图上的缩写词 （6)附加说明 (30)1管 道 仪 表 流 程 图物料代号和缩写词工程设计标准 中国石化兰州设计院 SLDI 233A08-96 实施日期： 199701-01 第 1 页 共 30 页1 说明1.1 在本规定中列入的物料代号和缩写字母是最基本的。当工程设计中需要补充本规定所列以外的物料代号和缩写字母时,不要与本规定相矛盾。1.2 当必须指明物料代号是供给或返回时，可在物料代号后加S(Supply)表示供给

2、，加R（Return）表示返回.例如,本文中冷却水供水为CWS，冷却水回水为CWR.1。3 要指明气相或液相等相特性时，可在物料代号后加G(Gas)表示气相，加L(Liquid)表示液相，例如氨作为冷冻剂，AMG为气氨，AML为液氨.1。4 本规定中，不包括自控专业用的代号和缩写字母，不包括计量单位和符号，不列入单位、协会、标准等的缩写字母。2 管道仪表流程图上的物料代号2.1 分类 物料代号用于管道编号，分为工艺物料代号及化学品、辅助物料和公用物料代号两类。2。2 工艺物料代号缩写代号英 文中 文 词 义PProcess stream工艺物料(通用代号）PGProcess gas工艺气体PL

3、Process liquid工艺液体PSProcess solid工艺固体2。3 化学品、辅助物料和公用物料代号缩写代号英 文中 文 词 义AAir空气ACAcid酸、酸液ACGAcidily gas酸性气体ACLAcidily liqiud酸性液体ACSAcidily sewage酸性污水ADAdditive添加剂AMAmmonia氨AMGGaseous ammonia氨气（作制冷剂)AMLLiquid ammonia液氨(作制冷剂）AMWAmmonia water氨水BABlowing Air鼓风空气BDBlow down排污BRBrine盐卤水29SLDI 233A0896BW Boil

4、er feed water锅炉给水CSteamy condensate水蒸汽凝液CACaustic碱、碱液CAGCaustic gas碱性气体CALCaustic liquid碱性液体CASCaustic sewage碱性污水CATCatalyst催化剂CCACarrier catalyst Air催化剂载运空气CDRChemical Drain化学污水放净CHWChilled water冷冻冷水(指0以上)CLChlorine氯CMChemicals化学品CNSClean sewage清净下水COCooling oil冷油（冷却油)COOCarbon dioxide二氧化碳CRSContam

5、inated rain and sewage污染下水(指污染的雨水、冲洗水、放净水、排水)CSWChilled salt water冷冻盐水(指0以下)CTMCooling transfer material冷载体CWCooling water冷却水CWRCooling water return冷却水回水CWSCooling water supply冷却水供水DAWDealkalized water脱碱水（用于除盐水系统)DEWDemineralized water除盐水(脱盐水)DFDry Flare干火炬排放气DRDrain排水、排液DWDomestic water生活用水、饮用水EAEx

6、haust air排出空气EREthane(or ethylene)refrigerant乙烷(或乙烯）冷冻剂ESExhaust steam排出蒸汽FFlare exhaust火炬排放气FAFilling Air填充空气FGFuel gas燃料气FLGFlue gas 烟道气FLWFiltrated water 过滤水FOFuel oil燃料油FOSFoaming solution泡沫液FRFreon refrigerant氟里昂冷冻剂FTFused salt熔盐FWFire water 消防水GOGland oil填料油GWGased water加气水、溶气水HHydrogen氢气HAHyd

7、rochloric acid盐酸HCHigh pressure condensate高压蒸汽凝液HFHot Flare热火炬排放气HOHeating oil热油、加热油、热载油HSHigh pressure steam高压蒸汽HSSHigh pressure saturated steam高压饱和蒸汽HSUHigh pressure super steam高压过热蒸汽HTMHeat transfer material热载体HWHot water 热水HWRHot water return热水回水(用于采暖、加热、空调等)HWSHot water supply热水给水（用于采暖、加热、空调等)H

8、YLHydraulic liquid液压液体HYOHydraulic oil液压油HYWHydraulic water液压水IAInstrument air仪表空气ICWIntermadiate cooling water冷却水二次用水IDWIndustrial snd domestic water生产和生活用水IGInert gas惰性气体ISIndustrial sewage生产污水（泛指工艺过程产生的污水）IWIndustrial water生产用水LCLow pressure condensate低压蒸汽凝液LDLiquid drain排液（泛指工艺排液)LOLubricating o

9、il润滑油LSLow pressure steam低压蒸汽LSSLow pressure saturated steam低压饱和蒸汽LSULow pressure super steam低压过热蒸汽MCMedium pressure condensate中压蒸汽凝液MRMethane refrigerant甲烷冷冻剂MSMedium pressure steam中压蒸汽MSSMedium pressure saturated steam中压饱和蒸汽MSUMedium pressure super steam中压过热蒸汽NNitrogen氮气NGNatural gas天然气OLOil油（泛指除原

10、料外的油)OSOily sewage含油污水OXOxygen氧气PAPlant air工厂空气PCProcess Condensate工艺冷凝液PRPropane（or propylene）refrigerant丙烷（或丙烯）冷冻剂PWPolished water精制水QOQuench Oil急冷油QWQuench water急冷水RRefrigerant冷冻剂、冷媒、制冷剂RAWRaw water原水RCSRain water and clean sewage雨水及清净下水(指清净的雨水、冲洗水、放净水、排水)RWRaw water雨水SSteam蒸汽SASulphuric acid硫酸SE

11、WSea water海水SFWSoft water软水(软化水)SGStack Gas烟道气SLSealing liquid密封液SOSealing oil密封油SSSanitary sewage生活污水STAStarting Air开车空气SUSludge,slurry污泥、泥浆SWSealing water密封水TCTurbine Condensate透平凝液TWTreated waste water处理后的废（污）水TWFFiltration Treated Water过滤水TWPPurified Treated Water澄清水VEVacuun exhaust真空排放气VGVent g

12、as放（排）空气体WWater水WACWaste acid废酸WCAWaste caustic废碱WFWet Flare湿火炬排放气WGWaste gas废气WLWaste liquid废液WOWaste oil废油WSWaste solid废渣WWWaste water废水（各种污水统称）WWCChemical Waste Water化学污水WWPProduction Waste Water生产污水WWSSanitary Waste Water生活污水3 管道仪表流程图上的缩写词3。1 按英文字母顺序排列的缩写词 缩写词用于图纸上的说明和标注。缩写词英 文中 文 词 义AAir drive气

13、力（空气)驱动AAnalysis分析ABSAbsolute绝对的ABSAcrylonitrile-butadienestyrene丙烯腈丁二烯苯乙烯ABS。EI.Absolute elevation绝对标高ACFAdvanced certified final先期确认图纸资料ADPTAdapter连接头AFCApproved for construction批准用于施工AFDApproved for design批准用于设计AFPApproved for planning批准用于规划设计AGLAngle角度AGL.VAngle valve角阀(角式截止阀）ALTAltitude高度、海拔ALU

14、M.Aluminum铝ALY。STL.Alloy steel.合金钢AMTAmount总量、总数APPROXApproximate近似的ASB。Asbestos石棉ASPH.Asphalt沥青A。S.S.Austenitic stainless steel奥氏体不锈钢ATMAtmosphere大气、大气压AUTOAutomatic自动的AVGAverage平均的、平均值BBuyer买方、买主BARBarometer气压计、气压表BA。VBall valve球阀B/B（BB）Back to back背至背B.BBy buyer买方负责BBL（bbl）Barrel桶、桶装B。CBetween ce

15、nters二者中心之间（中心距）BD。VBiowdown valve泄料阀、排污阀BFBlind flange盲法兰B.INSTBy instrument由仪表(专业）负责BLBattery limit界区线范围、装置边界BLDBlind挡板、盲板BLC.VBlock valve切断阀B.MBench mark基准点、水准BOMBill of material材料表、材料单BOPBottom of pipe管底BOTBottom底BPBack pressure背压B。PBursting pressure爆破压力B.PTBoiling point沸点BRS。Brass黄铜BR。VBreather

16、 valve呼吸阀BRZ。Bronze青铜B。SBy seller由卖主负责BTF。VButterfly valve蝶阀BURBurner燃烧器、烧嘴B.VBy vendor由制造厂（卖主)负责CCap管帽CABCellulose acetate butyrate醋酸丁酸纤维素 CATCatalyst催化剂C。BCatch basin雨水井（池)、集水井(池）、滤污器C/C(C-C）Center to center中心到中心CCNClient change notice用户变更通知C。DClosed drain密闭排放C/E（C-E)Center to end中心到端头(面）CEM I.NDC

17、ement lined衬水泥的CENTCentrifugal离心式、离心力、离心机CERA。Ceramic陶瓷C/F(CF）Center to face中心到面CFCertified final最终确认图纸资料CGCenter of gravity重心CHCondensate header 冷凝液收集管CHA.OPERChain operated链条操纵的C。I.Cast iron铸铁CIRCCirculate循环CIRC。Circumference圆周C。L(）Center line中心线CLClass等级CLNCClearance间距、容积、间隙CNDConduit水管、导管、管道CNDS

18、Condensate冷凝液C.OClean out清扫(口）、清除(口）CODContinued on drawing接续图COEFCoefficient系数COLColumn塔、柱、列COMBCombination组合、联合COMBUCombustion燃烧COMPRCompressor压缩机CONCConcentric同心的CONC.Concrete混凝土CONC.REDConcentric reducer同心异径管CONDENCondenser冷凝器COND。Condition条件、情况CONNConnect,connecting连接、管接头CONTControl控制CONTDConti

19、nued连接、续CONT。VControl valve控制阀COP。Copper铜、紫铜CPEChlorinated polyether氯化聚醚CPMSSConsolidated piping material summary sheet综合管道材料表CPLGCoupling联轴器、管箍、管接头CPVCChlorinated polyvinyl chloride氯化聚氯乙烯C.S。Carbon steel碳钢CSCCar seal close关闭状态下铅封（未经允许不得开启）CSOCar seal open开启状态下铅封(未经允许不得关闭）C。STL。Cast steel铸钢CSTGCasti

20、ng铸造、铸件、浇注CTRCenter中心C。VCheck valve止回阀、单向阀CYLCylinder钢瓶、汽缸、圆柱体DDensity密度DDriver驱动机、发动机 DAMPDamper调节挡板DA。PDash pot缓冲筒（器）DBLDouble双、复式的DC。Design condition设计条件DDIDetail design issue详细设计版DEGDegree度、等级DF。Design flow设计流量D。FDrinking fountain喷嘴式饮水龙头DHDistribute header分配管（蒸汽分配管）DIADiameter直径、通径DIMDimension尺寸

21、、因次DISCHDischarge排料、出口、排出DISTRDistribution分配DIVDivision部分、分割、隔板DNNominal diameter公称(名义）通径DNDown下DP。Design pressure设计压力D.PTDew point露点DP。VDiaphragm valve隔膜阀DR.Drive驱动、传动DRNDrain排放、排水、排液DSGNDesign设计DSSSDesign specification summary sheet设计规定汇总表DT。Design temperature设计温度DV.VDiverting valve（reversing valv

22、e）换向阀DWGDrawing图纸、制图DWG NO。Drawing number图号EEast东ECombustion engine内燃机EGas engine燃气机ECCEccentric偏心的、偏心器（轮、盘、装置）ECC REDEccentric reducer偏心异径管E。FElectric furnace电炉ELElevation标高、立面ELECElectricity，electric电、电的EMEREmergency事故、紧急ENCLEnclosure外壳、罩、围墙EPExplosion proof防爆EPDMEthylene propylene diene monomer乙烯

23、丙烯二烃单体EPREthylene propylene rubber乙丙橡胶EQEquation公式、方程式E。S。SEmergency shutdown system紧急关闭系统ESTEstimate估计etc.And so on(et cetera)等等ETLEffective tube length有效管长EXHExhaust排气、抽空、取尽EXISTExisting现有的、原有的EXPExpansion膨胀EXP.JTExpansion joint伸缩器、膨胀节、补偿器FBT.VFlushbottom tank valve罐底排污阀FCFail closed故障（能源中断）时阀关闭FD

24、Flanged and dished法兰式的和碟形的(圆板形的）F。DFloor drain地面排水口、地漏FEFlanged end法兰端部F/F(FF）Face to face面到面FFFlat faced（full face）平面（全平面、满平面）F。HFire hose消防水龙带FHFlat heab平盖FIFail indeterminate故障（能源中断）时阀处任意位置FIG.Figure图FLFail locked(last position)故障（能源中断）时阀保持原位（最终位置）FLFloor楼板、楼面FLGFlange法兰FLGDFlanged法兰式的FL。PTFlash

25、point闪点FMFFemale fsce凹面FOFail open故障(能源中断）时阀开启FOBFlat on bottom底平FOTFlat on top顶平FPC。VFlap check valve翻板止回阀FPRFFireproof防火F.PTFreezing point冰点FSFlushing supply冲洗源F。STL。Forged steel锻钢FS.VFlush valve冲洗阀FTFFitting to fitting管件直连FTGFitting管件FT。VFoot valve底阀F。W。Field weld现场焊接G（GENR)Generator发电机、动力发生机、发生器

26、GALVGalvanize电镀、镀锌G。CIGrey cast iron灰铸铁GENGeneral一般的、通用的、总的GLGlass玻璃G。LGround level地面标高GL.VGlobe valve截止阀G。OPERGear operator齿轮操作器GOVGovernor调速器GRGrade等级、度GRDGround地面GRPGroup组、类、群GR.WTGross weight总（毛）重GSGas supply气体源GSKTGasket垫片、密封垫G。V Gate valve 闸阀HHeight高HA.PHand pump(wobble pump）手摇泵HAZHeat affecte

27、d zone热影响区H。C.Hand control手工操作(控制)HC。Hose connection软管连接、软管接头H.C.S.Highcarbon steel高碳钢HCVHand control valve手动控制阀HDRHeader总管、主管、集合管HHHandhole手孔HHHighest（higher）最高(较高）HLLHigh liquid level高液位HORHorizontal水平的、卧式的H.P。High pressure高压HPTHigh point高点HSHose station软管站(公用工程站、公用物料站)HSHydraulic supply液压源HS。C.IH

28、igh silicon cast iron高硅铸铁HS。VHose valve软管阀HTHigh temperature高温HTRHeater加热器(炉)HYRHydraulic operator液压操纵器IDInside diameter内径i。e。That is (id est)即、也就是IGRIgnitor点火器INL.PMPInline pump管道泵INInlet进口、入口INInput输入INSInsulation隔热、绝缘、隔离INSTInstrument仪表、仪器INSTI。Installation装置、安装INST。VInstrument valve仪表阀INTMTInter

29、mittent间歇的、断续的IS.B.I.Inside battery limit装置边界内侧JOB NO。Job number项目号KRKnuckle radius转向半径LLength长度、段、节、距离LLow低L.N。BLDLine blind管道盲板LNB。VLine-blind valve管道盲板阀LCLocked closed关闭状态下加锁(锁闭）L.C.S.Lowcarbon steel低碳钢LC。VLift check valve升降式止回阀LEPLarge end plain大端为平的LETLarge end thread大端带螺纹LGLevel glass玻璃管(板）液位计

30、LIQLiquid液体LJFLap joint flange松套法兰LLLowest(lower）最低（较低)LLLLow liquid level低液位LNDLined衬里LOLocked open开启状态下加锁(锁开)L.P。Low pressure低压LPTLow point低点L.RLoad ratio载荷比LRLong redius长半径LTRLetter符号、字母、信LUBLubricant润滑油、润滑剂MMotor（motor actuator)电动机、马达、电动执行机构MACHMachine机器MATLMaterial材料、物质MAXMaximum最大的M。C。S.Medium

31、carbon steel中碳钢MDL(M）Middle（medium) 中间的、中等的、正中、当中MFMale face凸面M&FMale and female阳的与阴的(凸面和凹面）MHMan hole人孔M。I.Malleable iron可锻铸铁MINMinimum最小的M。LMatch line接续线MOL WTMolecular weight分子量MOVMotor operated valve电动阀M.P.Middle(medium）pressure 中压M。S。S.Martensitic stainless steel马氏体不锈钢MTDMean temperature differ

32、ence平均温差MTOMaterial take-off材料统计MWMinimum wall最小壁厚M.WMineral wool矿渣棉NNorth北NBNominal bore公称孔径NCAmerican national coarse thread美国标准粗牙螺纹N。CNormally closed正常状态下关闭N。C。I。Nodular cast iron(nodular graphite iron）球墨铸铁NFAmerican national fine thread美国标准细牙螺纹NIL。Normal interface level正常界面NIPNipple管接头、螺纹管接头NLLN

33、ormal liquid level正常液位N.ONormally open正常状态下开启NOMNominal名义上的、公称的、额定的NO。PKTNo pocket不允许出现袋形NORNormal正常的、正规的、标准的NOZNozzle喷嘴、接管嘴NPSNational pipe size国标管径NPSAmerican standard straight pipe thread美国标准直管螺纹NPSHNet positive suction head净(正) 吸入压头NPSHANet positive suction head available净(正）吸入压头有效值NPSHRNet posi

34、tive suction head required净(正）吸入压头必需值NPTAmerican standard taper pipe thread美国标准锥管螺纹NSNitrogen supply氮源NUMNumber号码、数目N.VNeedle valve针形阀OC.Operating condition操作条件、工作条件ODOutside diameter外径OETOne end threaded一端制成螺纹(一端带螺纹）OF.Operating flow操作流量、工作流量O/O(OO)Out to out总尺寸、外廊尺寸OOCOrigin of coordinate坐标原点OP.Op

35、erating pressure操作压力、工作压力OPEROperating操作的、控制的、工作的OPPOpposite相对的、相反的OROutside radius外半径ORFOrifice孔板、小孔OS。B。LOutside battery limit装置边界外侧OT.Operating temperature操作温度、工作温度PAPolyamide聚酰胺PAPPiping arrangement plan (Piping assem管道平面布置图bly，piping layout）PARParallel平行的、并联的PARAParagraph段、节、款PBPolybutylene聚丁烯P

36、BPush button按钮PB STAPush button station控制（按钮)站PCPolycarbonate聚碳酸酯PEPlain end平端PEPolyethylene聚乙烯P.FPermanent filter永久过滤器PFPlatform平台、操作台PFDProcess flow diagram工艺流程图PGPlug塞子、丝堵、栓PIPoint of intersection交叉点PIDPiping and instrument diagram管道仪表流程图P。IR.Pig iron生铁PLPlate板、盘PLSPlastic塑料PMMAPolymethel methacr

37、ylate聚甲基丙烯酸甲酯PNPressure rating（nominal pressure） 公称压力PNEUPneumatic气动的、气体的PN。VPinch valve夹套式胶管阀（用于泥浆、粉尘等）POPolyolefin聚烯烃POSPoint of support支撑点PPPolypropylene聚丙烯P。PROTPersonnel protection人员保护PRESS（P）Pressure压力PSPolystrene聚苯乙烯P.SPTPipe support管架PSRProject status report项目进展情况报告PSSSPurchasing specificati

38、on summary sheet订货单、采购说明汇总表PTPoint点PTFEPolytetrafluoroethylene聚四氟乙烯PT。VPiston type valve柱塞阀P.VPlug valve旋塞阀PVCPolyvinyl chloride聚氯乙烯PVC LNDPolyvinyl chloride lined聚氯乙烯衬里PVDFPoly vinylidene fluoride聚偏二氟乙烯Q CPLGQuick coupling快速接头QC。VQuick closing valve快闭阀QO。VQuick opening valve快开阀QTYQuantity数量RRadius半

39、径RADRadiator辐射器、散热器R。CRodding connection棒桶口（孔）RECPReceptacle储罐、容器、仓库REDReducer异径管、减压器、还原器REGENRegenerator再生器REVRevision修改RFRaised face突面RESSmooth raised face光滑突面R。H.Relative humidity相对湿度RJRing joint环形接头（环接)RL。VRelief valve泄压阀RORestriction orifice限流孔板RPRupture piece（disk)爆破片RSRising stem升杆式(明杆）RSPRem

40、ovable spool piece可拆卸短管(件)RUB LNDRubber lined衬橡胶RVReducing valve减压阀SSample取样口、取样点SSeller卖方、卖主S.Shell壳体、壳程、壳层SSouth南SSpecial(traced）特殊（伴管)SA。VSampling valve取样阀SCSampling cooler取样冷却器SCH.NO。Schedule number壁厚系列号SCRDScrewed螺纹、螺旋SECTSection剖面图、部分、章、段、节SEPSmall end plane小端为平的SETSmall end thread小端带螺纹S.EWSec

41、urity eye washer安全洗眼器S。EW.SSecurith eye washer sprayer安全喷淋洗眼器SGSight glass视镜SH.ABRShock absorber减震器、振动吸收器SKSketch草图、示意图SLRSilencer消音器SL.VSlide valve滑阀SN.Swaged nipple锻制螺纹短管SNRSnubber缓冲器、锚链制止器、掏槽眼、减震器SO.Steam out蒸汽吹出（清除）SPSpecial piece特殊件SP。Static pressure静压S.P。Set point设定点S。PSet pressure设定压力、整定压力SPE

42、CSpecification说明、规格特性、明细表SP GRSpecific gravity比重SP HTSpecific heat比热SRStyrenerubber苯乙烯橡胶S.SSecurity sprayer安全喷淋器S.S。Stainless steel不锈钢SSSteam supply蒸汽源STSteam trace蒸汽伴热ST.Steam turbine蒸汽（透平)STDStandard标准S.TEStructural teeT型结构STL.Steel钢STMSteam蒸汽STRStrainer过滤器SUCTSuction吸入、入口SVSafety valve安全阀SWSocket

43、 welded承插焊的SWSwitch开关SYMSymmetrical对称的SYMBSymbol符号、信号TTeeT型、三通TSteam trap蒸汽疏水阀T.Tube管子、管程、管层T.BTop and bottom顶和底T/B（T-B）Top to bottom顶到底TEThreaded end螺纹端TEMP(T)Temperature温度TEDThreaded螺纹的THKThick厚度TIT.Titanium钛TLTangent line切线TL/TL（TLTangent line to tangent line切线到切线TL)TOPTop kf pipe顶、管顶TOSTop of su

44、pport，top of steel架顶面、钢结构顶面TR.VThrottle valve节流阀T.STemporary strainer临时过滤器TURBTurbine透平机、涡轮机、汽轮机U.CUtility coupling公用工程连接口（公用物料连接口)UFDUtility flow daigram公用工程流程图(公用物料流程图）UG(U)Underground埋地、地下UHUnit heater单元加热器、供热机组UNUnion活接头、联合、结合VValve阀VVendor制造商、卖主VACVacuum真空VARNVarnish清漆VBKVaccum breaker破真空(阀）VCM

45、Vendor coordinative meeting厂商协调会VELVelocity速度VERTVertical垂直的、立式、垂线VISCViscosity粘度VITVitreous玻璃状的、透明的VOLVolume体积、容量、卷、册VTVent connection放空V。TVitrified tile缸瓦质、陶瓷质VTHVent hole放气孔、通气孔VT.VVent valve放空阀WWest西WDWidth宽度、幅度、阔度WEWith equipment随设备(配套）供货W。I.Wrought iron熟(锻） 铁W。LDWorking load工作荷载、操作荷载WNFWeld ne

46、ck flange对焊法兰WPWeather proof全天侯、防风雨的W.P。Working point工作点、操作的WSWater supply水源WTWall thickness壁厚WT.Weight重量XRX-rayX射线3.2 按中文笔画顺序排列的缩写词 同笔画的中文按中文的拼音字母顺序排列。中文词义缩 写 词英 文一画：一般的、通用的、总的GENGeneral一端制成螺纹(一端带螺纹)OETOne end threaded乙丙橡胶EPREthylene propylene rubber乙烯丙烯二烃单体EPDMEthylene propylene diene monomer二画：厂商

47、协调会VCMVendor coordinative meeting二者中心之间（中心距）B.CBetween centers人孔MHMan hole人员保护P.PROTPersonnel protectionT型、三通TTeeT型结构S.TEStructural teeX射线XRX-ray三画：大气、大气压ATMAtmosphere大端为平的LEPLarge end plane大端带螺纹LETLarge end thread工艺流程图PFDProcess flow diagram工作点、操作的W。P。Working point工作荷载、操作荷载W。LDWorking load下DNDown小端

48、为平的SEPSmall end plane小端带螺纹SETSmall end thread四画：不允许出现袋形NO.PKTNo pocket比重SP GRSpecific gravity比热SP HTSpecific heat不锈钢S.S.Stainless steel尺寸、因次DIMDimension订货单PSSSPurchasing specification summary sheet分子量MOL WTMolecular weight分析AAnalysis分配DISTRDistribution分配管(蒸汽分配管）DHDistribute header公用工程连接口（公用物料连接口)U.C

49、Utility coupling公用工程流程图（公用物料流程图）UFDUtility flow diagram公式、方程式EQEquation公称孔径NBNominal bore公称（名义)通径DNNominal diameter公称压力PNPressure rating (nominal pressure)开关SWSwitch开启状态下加锁(锁开)LOLocked open开启状态下铅封（未经允许不得关闭）CSOCar seal open孔板、小孔ORFOrifice马氏体不锈钢M。S.S。Martensitic stainless steel内径IDInside diameter内燃机EC

50、ombustion engine气力(空气）驱动AAir drive气动的、气体的PNEUPneumatic气压计、气压表BARBarometer气体源GSGas supply切线TLTangent line切线到切线TL/TL（TLTL)Tangent line to tangent line切断阀BLC.VBlock valve手工操作（控制)H。C。Hand control手孔HHHandhole水平的、卧式的HORHorizontal手动控制阀HCVHand control valve升杆式（明杆)RSRising stem升降式止回阀LC.VLift check valve双、复式的DBLDouble水源WSWater supply手摇泵HA。PHand pump(wobble pump)水管、导管、管道CNDConduit中心CTRCenter中心到中心C/C（CC)Center to center中心到面C/F（C-F）Center to face中心线C。L()Center line中心到端头（面）C/E(CE）Center to end止回阀、单向阀C.VCheck v