ASMEBoilerandPressureVesselCodeANINTERNATIONALCODEIIMaterialsPartAFerrousMaterialSpecifications(BeginningtoSA)ASMEFINALCoversIIPartAMECHindd:PMIIMATERIALSPartAFerrousMaterialSpecifications(BeginningtoSA)ASMEBoilerandPressureVesselCommitteeonMaterialsANINTERNATIONALCODEASMEBoilerPressureVesselCodeEditionJuly,TwoParkAvenue•NewYork,NY•USADateofIssuance:July,ThisinternationalcodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandardsanditisanAmericanNationalStandardTheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipateTheproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublicatlargeASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivityASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliabilityUsersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibilityParticipationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandardASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestablishedASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividualsTheendnotesinthisdocument(ifany)arepartofthisAmericanNationalStandardASMEcollectivemembershipmarkCertificationMarkTheaboveASMEsymbolisregisteredintheUSPatentOffice“ASME”isthetrademarkofTheAmericanSocietyofMechanicalEngineersTheSpecificationspublishedandcopyrightedbytheAmericanSocietyforTestingandMaterialsarereproducedwiththeSociety’spermissionNopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisherLibraryofCongressCatalogCardNumber:PrintedintheUnitedStatesofAmericaAdoptedbytheCouncilofTheAmericanSocietyofMechanicalEngineers,latesteditionTheAmericanSocietyofMechanicalEngineersTwoParkAvenue,NewYork,NYCopyrightbyTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllrightsreservedTABLEOFCONTENTSListofSectionsxForewordxiiStatementofPolicyontheUseoftheCertificationMarkandCodeAuthorizationinAdvertisingxivStatementofPolicyontheUseofASMEMarkingtoIdentifyManufacturedItemsxivSubmittalofTechnicalInquiriestotheBoilerandPressureVesselStandardsCommitteesxvPersonnelxviiASTMPersonnelxxxiiPrefacexxxiiiSpecificationsListedbyMaterialsxxxivSpecificationRemovalxliiSummaryofChangesxliiiListofChangesinRecordNumberOrderxlvCrossReferencingandStylisticChangesintheBoilerandPressureVesselCodexlviiSASAMSpecificationforGeneralRequirementsforRolledStructuralSteelBars,Plates,Shapes,andSheetPilingSASAMSpecificationforGeneralRequirementsforSteelPlatesforPressureVesselsSASAMSpecificationforSteelBars,CarbonandAlloy,HotWrought,GeneralRequirementsforSASpecificationforSteelRivetsandBarsforRivets,PressureVesselsSASAMSpecificationforCarbonStructuralSteelSASAMSpecificationforFerriticMalleableIronCastingsSASAMSpecificationforPipe,Steel,BlackandHotDipped,ZincCoated,WeldedandSeamlessSASAMSpecificationforCarbonSteelForgings,forPipingApplicationsSASAMSpecificationforSeamlessCarbonSteelPipeforHighTemperatureServiceSASpecificationforPipe,Steel,ElectricFusion(ARC)Welded(SizesNPSandOver)SASpecificationforElectricResistanceWeldedSteelPipeSASAMSpecificationforElectricResistanceWeldedCarbonSteelandCarbonManganeseSteelBoilerandSuperheaterTubesSASAMSpecificationforSeamlessColdDrawnLowCarbonSteelHeatExchangerandCondenserTubesSASAMSpecificationforCarbonSteelForgings,forGeneralPurposePipingSASAMSpecificationforForgedorRolledAlloyandStainlessSteelPipeFlanges,ForgedFittings,andValvesandPartsforHighTemperatureServiceSASAMSpecificationforSeamlessCarbonSteelBoilerTubesforHighPressureServiceSASAMSpecificationforAlloySteelandStainlessSteelBoltingMaterialsforHighTemperatureorHighPressureServiceandOtherSpecialPurposeApplicationsSASAMSpecificationforCarbonandAlloySteelNutsforBoltsforHighPressureorHighTemperatureService,orBothSASAMSpecificationforPressureVesselPlates,AlloySteel,ChromiumManganeseSiliconSASAMSpecificationforPressureVesselPlates,AlloySteel,NickelSASAMSpecificationforPressureVesselPlates,AlloySteel,MolybdenumSASAMSpecificationforSeamlessCarbonMolybdenumAlloySteelBoilerandSuperheaterTubesiiiSASAMSpecificationforSeamlessMediumCarbonSteelBoilerandSuperheaterTubesSASAMSpecificationforSeamlessFerriticandAusteniticAlloySteelBoiler,Superheater,andHeatExchangerTubesSASAMSpecificationforElectricResistanceWeldedCarbonSteelHeatExchangerandCondenserTubesSASAMSpecificationforSteelCastings,Carbon,SuitableforFusionWeldingforHighTemperatureServiceSASAMSpecificationforSteelCastings,MartensiticStainlessandAlloy,forPressureContainingParts,SuitableforHighTemperatureServiceSASAMSpecificationforPressureVesselPlates,AlloySteel,ManganeseVanadiumNickelSASAMSpecificationforChromiumVanadiumAlloySteelSpringWireSASAMSpecificationforChromiumVanadiumAlloySteelValveSpringQualityWireSASAMSpecificationforPipingFittingsofWroughtCarbonSteelandAlloySteelforModerateandHighTemperatureServiceSASAMSpecificationforChromiumandChromiumNickelStainlessSteelPlate,Sheet,andStripforPressureVesselsandforGeneralApplicationsSASAMSpecificationforWeldedAusteniticSteelBoiler,Superheater,HeatExchanger,andCondenserTubesSASAMSpecificationforElectricResistanceWeldedFerriticAlloySteelBoilerandSuperheaterTubesSASpecificationforStainlessChromiumSteelCladPlateSASpecificationforStainlessChromiumNickelSteelCladPlateSASpecificationforNickelandNickelBaseAlloyCladSteelPlateSASAMSpecificationforCarbonSteelForgingsforPressureVesselComponentsSASAMSpecificationforSeamlessandWeldedFerriticandMartensiticStainlessSteelTubingforGeneralServiceSASpecificationforStainlessSteelBarsandShapesSASAMSpecificationforGrayIronCastingsforPressureContainingPartsforTemperaturesuptoF(C)SASAMSpecificationforLowandIntermediateTensileStrengthCarbonSteelPlatesSASAMSpecificationforPressureVesselPlates,CarbonSteel,LowandIntermediateTensileStrengthSASAMSpecificationforPressureVesselPlates,CarbonSteel,ManganeseSiliconSASAMSpecificationforPressureVesselPlates,AlloySteel,ManganeseMolybdenumandManganeseMolybdenumNickelSASpecificationforCarbonSteelBoltsandStuds,PSITensileStrengthSASAMSpecificationforColdDrawn,StressRelievedCarbonSteelBarsSubjecttoMechanicalPropertyRequirementsSASAMSpecificationforSeamlessandWeldedAusteniticStainlessSteelPipesSASAMSpecificationforAlloySteelandStainlessSteelBoltingMaterialsforLowTemperatureServiceSASpecificationforStructuralBolts,Steel,HeatTreated,ksiMinimumTensileStrengthSASAMSpecificationforSeamlessandWeldedSteelPipeforLowTemperatureServiceSASAMSpecificationforSeamlessandWeldedCarbonandAlloySteelTubesforLowTemperatureServiceSASAMSpecificationforSeamlessFerriiticAlloySteelPipeforHighTemperatureServiceSASAMSpecificationforAlloySteelForgingsforPressureandHighTemperaturePartsSASAMSpecificationforCarbonandLowAlloySteelForgings,RequiringNotchToughnessTestingforPipingComponentsivSASAMSpecificationforCastings,Austenitic,AusteniticFerritic(Duplex),forPressureContainingPartsSASAMSpecificationforSteelCastings,FerriticandMartensitic,forPressureContainingParts,SuitableforLowTemperatureServiceSASAMSpecificationforPressureVesselPlates,AlloySteel,DoubleNormalizedandTemperedNickelSASpecificationforQuenchedandTemperedAlloySteelBolts,Studs,andOtherExternallyThreadedFastenersSASAMSpecificationforElectricFusionWeldedAusteniticChromiumNickelAlloySteelPipeforHighTemperatureServiceSASAMSpecificationforCarbonandFerriticAlloySteelForgedandBoredPipeforHighTemperatureServiceSATestMethodsandDefinitionsforMechanicalTestingofSteelProductsSASAMSpecificationforCarbonandAlloySteelForgingsforThinWalledPressureVesselsSASAMSpecificationforSeamlessAusteniticSteelPipeforHighTemperatureCentralStationServiceSASAMSpecificationforPressureVesselPlates,AlloySteel,ChromiumMolybdenumSASAMSpecificationforFerriticDuctileIronPressureRetainingCastingsforUseatElevatedTemperaturesSASAMSpecificationforWroughtAusteniticStainlessSteelPipingFittingsSASAMSpecificationforWeldedLargeDiameterAusteniticSteelPipeforCorrosiveorHighTemperatureServiceSASAMSpecificationforSteel,Sheet,Carbon,forPressureVesselsSASAMSpecificationforPipingFittingsofWroughtCarbonSteelandAlloySteelforLowTemperatureServiceSASAMSpecificationforSeamlessandElectricWeldedLowAlloySteelTubesSASAMSpecificationforCentrifugallyCastFerriticAlloySteelPipeforHighTemperatureServiceSASAMSpecificationforStraightBeamUltrasonicExaminationofSteelPlatesSASAMSpecificationforAlloySteelTurbineTypeBoltingMaterialSpeciallyHeatTreatedforHighTemperatureServiceSASpecificationforHexCapScrews,BoltsandStuds,Steel,HeatTreated,ksiMinimumTensileStrength,GeneralUseSASAMSpecificationforGeneralRequirementsforCarbon,FerriticAlloy,andAusteniticAlloySteelTubesSASAMSpecificationforCentrifugallyCastAusteniticSteelPipeforHighTemperatureServiceSASAMSpecificationforHighTemperatureBoltingMaterialsWithExpansionCoefficientsComparabletoAusteniticStainlessSteelsSASAMSpecificationforPressureVesselPlates,CarbonSteel,HighStrengthManganeseSASAMSpecificationforDuctileIronCastingsforPaperMillDryerRollsSASAMSpecificationforStainlessSteelBarsandShapesforUseinBoilersandOtherPressureVesselsSASAMSpecificationforGeneralRequirementsforFlatRolledStainlessandHeatResistingSteelPlate,Sheet,andStripSASAMSpecificationforGeneralRequirementsforStainlessSteelBars,Billets,andForgingsSASAMSpecificationforSteelCastingsSuitableforPressureServiceSASAMSpecificationforQuenchedandTemperedVacuumTreatedCarbonandAlloySteelForgingsforPressureVesselsSASpecificationforElectricResistanceWeldedCarbonandAlloySteelMechanicalTubingSASAMSpecificationforPressureVesselPlates,CarbonSteel,forIntermediateandHigherTemperatureServicevSASAMSpecificationforPressureVesselPlates,CarbonSteel,forModerateandLowerTemperatureServiceSASAMSpecificationforPressureVes

ASMEBoilerandPressureVesselCodeANINTERNATIONALCODEIIMaterialsPartAFerrousMaterialSpecifications(BeginningtoSA)ASMEFINALCoversIIPartAMECHindd:PMIIMATERIALSPartAFerrousMaterialSpecifications(BeginningtoSA)ASMEBoilerandPressureVesselCommitteeonMaterialsANINTERNATIONALCODEASMEBoilerPressureVesselCodeEditionJuly,TwoParkAvenue•NewYork,NY•USADateofIssuance:July,ThisinternationalcodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandardsanditisanAmericanNationalStandardTheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipateTheproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublicatlargeASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivityASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliabilityUsersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibilityParticipationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandardASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestablishedASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividualsTheendnotesinthisdocument(ifany)arepartofthisAmericanNationalStandardASMEcollectivemembershipmarkCertificationMarkTheaboveASMEsymbolisregisteredintheUSPatentOffice“ASME”isthetrademarkofTheAmericanSocietyofMechanicalEngineersTheSpecificationspublishedandcopyrightedbytheAmericanSocietyforTestingandMaterialsarereproducedwiththeSociety’spermissionNopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisherLibraryofCongressCatalogCardNumber:PrintedintheUnitedStatesofAmericaAdoptedbytheCouncilofTheAmericanSocietyofMechanicalEngineers,latesteditionTheAmericanSocietyofMechanicalEngineersTwoParkAvenue,NewYork,NYCopyrightbyTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllrightsreservedTABLEOFCONTENTSListofSectionsxForewordxiiStatementofPolicyontheUseoftheCertificationMarkandCodeAuthorizationinAdvertisingxivStatementofPolicyontheUseofASMEMarkingtoIdentifyManufacturedItemsxivSubmittalofTechnicalInquiriestotheBoilerandPressureVesselStandardsCommitteesxvPersonnelxviiASTMPersonnelxxxiiPrefacexxxiiiSpecificationsListedbyMaterialsxxxivSpecificationRemovalxliiSummaryofChangesxliiiListofChangesinRecordNumberOrderxlvCrossReferencingandStylisticChangesintheBoilerandPressureVesselCodexlviiSASAMSpecificationforGeneralRequirementsforRolledStructuralSteelBars,Plates,Shapes,andSheetPilingSASAMSpecificationforGeneralRequirementsforSteelPlatesforPressureVesselsSASAMSpecificationforSteelBars,CarbonandAlloy,HotWrought,GeneralRequirementsforSASpecificationforSteelRivetsandBarsforRivets,PressureVesselsSASAMSpecificationforCarbonStructuralSteelSASAMSpecificationforFerriticMalleableIronCastingsSASAMSpecificationforPipe,Steel,BlackandHotDipped,ZincCoated,WeldedandSeamlessSASAMSpecificationforCarbonSteelForgings,forPipingApplicationsSASAMSpecificationforSeamlessCarbonSteelPipeforHighTemperatureServiceSASpecificationforPipe,Steel,ElectricFusion(ARC)Welded(SizesNPSandOver)SASpecificationforElectricResistanceWeldedSteelPipeSASAMSpecificationforElectricResistanceWeldedCarbonSteelandCarbonManganeseSteelBoilerandSuperheaterTubesSASAMSpecificationforSeamlessColdDrawnLowCarbonSteelHeatExchangerandCondenserTubesSASAMSpecificationforCarbonSteelForgings,forGeneralPurposePipingSASAMSpecificationforForgedorRolledAlloyandStainlessSteelPipeFlanges,ForgedFittings,andValvesandPartsforHighTemperatureServiceSASAMSpecificationforSeamlessCarbonSteelBoilerTubesforHighPressureServiceSASAMSpecificationforAlloySteelandStainlessSteelBoltingMaterialsforHighTemperatureorHighPressureServiceandOtherSpecialPurposeApplicationsSASAMSpecificationforCarbonandAlloySteelNutsforBoltsforHighPressureorHighTemperatureService,orBothSASAMSpecificationforPressureVesselPlates,AlloySteel,ChromiumManganeseSiliconSASAMSpecificationforPressureVesselPlates,AlloySteel,NickelSASAMSpecificationforPressureVesselPlates,AlloySteel,MolybdenumSASAMSpecificationforSeamlessCarbonMolybdenumAlloySteelBoilerandSuperheaterTubesiiiSASAMSpecificationforSeamlessMediumCarbonSteelBoilerandSuperheaterTubesSASAMSpecificationforSeamlessFerriticandAusteniticAlloySteelBoiler,Superheater,andHeatExchangerTubesSASAMSpecificationforElectricResistanceWeldedCarbonSteelHeatExchangerandCondenserTubesSASAMSpecificationforSteelCastings,Carbon,SuitableforFusionWeldingforHighTemperatureServiceSASAMSpecificationforSteelCastings,MartensiticStainlessandAlloy,forPressureContainingParts,SuitableforHighTemperatureServiceSASAMSpecificationforPressureVesselPlates,AlloySteel,ManganeseVanadiumNickelSASAMSpecificationforChromiumVanadiumAlloySteelSpringWireSASAMSpecificationforChromiumVanadiumAlloySteelValveSpringQualityWireSASAMSpecificationforPipingFittingsofWroughtCarbonSteelandAlloySteelforModerateandHighTemperatureServiceSASAMSpecificationforChromiumandChromiumNickelStainlessSteelPlate,Sheet,andStripforPressureVesselsandforGeneralApplicationsSASAMSpecificationforWeldedAusteniticSteelBoiler,Superheater,HeatExchanger,andCondenserTubesSASAMSpecificationforElectricResistanceWeldedFerriticAlloySteelBoilerandSuperheaterTubesSASpecificationforStainlessChromiumSteelCladPlateSASpecificationforStainlessChromiumNickelSteelCladPlateSASpecificationforNickelandNickelBaseAlloyCladSteelPlateSASAMSpecificationforCarbonSteelForgingsforPressureVesselComponentsSASAMSpecificationforSeamlessandWeldedFerriticandMartensiticStainlessSteelTubingforGeneralServiceSASpecificationforStainlessSteelBarsandShapesSASAMSpecificationforGrayIronCastingsforPressureContainingPartsforTemperaturesuptoF(C)SASAMSpecificationforLowandIntermediateTensileStrengthCarbonSteelPlatesSASAMSpecificationforPressureVesselPlates,CarbonSteel,LowandIntermediateTensileStrengthSASAMSpecificationforPressureVesselPlates,CarbonSteel,ManganeseSiliconSASAMSpecificationforPressureVesselPlates,AlloySteel,ManganeseMolybdenumandManganeseMolybdenumNickelSASpecificationforCarbonSteelBoltsandStuds,PSITensileStrengthSASAMSpecificationforColdDrawn,StressRelievedCarbonSteelBarsSubjecttoMechanicalPropertyRequirementsSASAMSpecificationforSeamlessandWeldedAusteniticStainlessSteelPipesSASAMSpecificationforAlloySteelandStainlessSteelBoltingMaterialsforLowTemperatureServiceSASpecificationforStructuralBolts,Steel,HeatTreated,ksiMinimumTensileStrengthSASAMSpecificationforSeamlessandWeldedSteelPipeforLowTemperatureServiceSASAMSpecificationforSeamlessandWeldedCarbonandAlloySteelTubesforLowTemperatureServiceSASAMSpecificationforSeamlessFerriiticAlloySteelPipeforHighTemperatureServiceSASAMSpecificationforAlloySteelForgingsforPressureandHighTemperaturePartsSASAMSpecificationforCarbonandLowAlloySteelForgings,RequiringNotchToughnessTestingforPipingComponentsivSASAMSpecificationforCastings,Austenitic,AusteniticFerritic(Duplex),forPressureContainingPartsSASAMSpecificationforSteelCastings,FerriticandMartensitic,forPressureContainingParts,SuitableforLowTemperatureServiceSASAMSpecificationforPressureVesselPlates,AlloySteel,DoubleNormalizedandTemperedNickelSASpecificationforQuenchedandTemperedAlloySteelBolts,Studs,andOtherExternallyThreadedFastenersSASAMSpecificationforElectricFusionWeldedAusteniticChromiumNickelAlloySteelPipeforHighTemperatureServiceSASAMSpecificationforCarbonandFerriticAlloySteelForgedandBoredPipeforHighTemperatureServiceSATestMethodsandDefinitionsforMechanicalTestingofSteelProductsSASAMSpecificationforCarbonandAlloySteelForgingsforThinWalledPressureVesselsSASAMSpecificationforSeamlessAusteniticSteelPipeforHighTemperatureCentralStationServiceSASAMSpecificationforPressureVesselPlates,AlloySteel,ChromiumMolybdenumSASAMSpecificationforFerriticDuctileIronPressureRetainingCastingsforUseatElevatedTemperaturesSASAMSpecificationforWroughtAusteniticStainlessSteelPipingFittingsSASAMSpecificationforWeldedLargeDiameterAusteniticSteelPipeforCorrosiveorHighTemperatureServiceSASAMSpecificationforSteel,Sheet,Carbon,forPressureVesselsSASAMSpecificationforPipingFittingsofWroughtCarbonSteelandAlloySteelforLowTemperatureServiceSASAMSpecificationforSeamlessandElectricWeldedLowAlloySteelTubesSASAMSpecificationforCentrifugallyCastFerriticAlloySteelPipeforHighTemperatureServiceSASAMSpecificationforStraightBeamUltrasonicExaminationofSteelPlatesSASAMSpecificationforAlloySteelTurbineTypeBoltingMaterialSpeciallyHeatTreatedforHighTemperatureServiceSASpecificationforHexCapScrews,BoltsandStuds,Steel,HeatTreated,ksiMinimumTensileStrength,GeneralUseSASAMSpecificationforGeneralRequirementsforCarbon,FerriticAlloy,andAusteniticAlloySteelTubesSASAMSpecificationforCentrifugallyCastAusteniticSteelPipeforHighTemperatureServiceSASAMSpecificationforHighTemperatureBoltingMaterialsWithExpansionCoefficientsComparabletoAusteniticStainlessSteelsSASAMSpecificationforPressureVesselPlates,CarbonSteel,HighStrengthManganeseSASAMSpecificationforDuctileIronCastingsforPaperMillDryerRollsSASAMSpecificationforStainlessSteelBarsandShapesforUseinBoilersandOtherPressureVesselsSASAMSpecificationforGeneralRequirementsforFlatRolledStainlessandHeatResistingSteelPlate,Sheet,andStripSASAMSpecificationforGeneralRequirementsforStainlessSteelBars,Billets,andForgingsSASAMSpecificationforSteelCastingsSuitableforPressureServiceSASAMSpecificationforQuenchedandTemperedVacuumTreatedCarbonandAlloySteelForgingsforPressureVesselsSASpecificationforElectricResistanceWeldedCarbonandAlloySteelMechanicalTubingSASAMSpecificationforPressureVesselPlates,CarbonSteel,forIntermediateandHigherTemperatureServicevSASAMSpecificationforPressureVesselPlates,CarbonSteel,forModerateandLowerTemperatureServiceSASAMSpecificationforPressureVes