Designation:F1298−90(Reapproved2018)AnAmericanNationalStandardStandardSpecificationforFlexible,Expansion-TypeBallJointsforMarineApplications1ThisstandardisissuedunderthefixeddesignationF1298;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthedesign,manufacture,andtestingofballjointsutilizedforaccommodatingthermalexpansionandcontraction,ormechanicalmovementofapipelinecarryingfluid.Theballjointsareintendedforuseinsystemsoperatingabove0°F(18°C).1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section7,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2A395/A395MSpecificationforFerriticDuctileIronPressure-RetainingCastingsforUseatElevatedTempera-turesF722SpecificationforWeldedJointsforShipboardPipingSystems2.2ANSIStandard:3B31.1PowerPiping2.3AmericanSocietyofMechanicalEngineers:4ASMEBoilerandPressureVesselCode,SectionVIII,Division1PressureVesselsSectionIX,WeldingandBrazingRequirements3.OrderingInformation3.1Eachpurchaseorderorinquiryforballjointstothisspecificationshallincludethefollowingasa...
