Designation:A334/A334M−04a(Reapproved2016)StandardSpecificationforSeamlessandWeldedCarbonandAlloy-SteelTubesforLow-TemperatureService1ThisstandardisissuedunderthefixeddesignationA334/A334M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecification2coversseveralgradesofminimum-wall-thickness,seamlessandwelded,carbonandalloy-steeltubesintendedforuseatlowtemperatures.Someproductsizesmaynotbeavailableunderthisspecificationbecauseheavierwallthicknesseshaveanadverseaffectonlow-temperatureimpactproperties.1.2SupplementaryRequirementS1ofanoptionalnatureisprovided.Thisshallapplyonlywhenspecifiedbythepur-chaser.NOTE1—Fortubingsmallerthan1⁄2in.[12.7mm]inoutsidediameter,theelongationvaluesgivenforstripspecimensinTable1shallapply.Mechanicalpropertyrequirementsdonotapplytotubingsmallerthan1⁄8in.[3.2mm]inoutsidediameterandwithawallthicknessunder0.015in.[0.4mm].1.3Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecifi-cation.Theinch-poundunitsshallapplyunlessthe“M”designationofthisspecificationisspecifiedintheorder.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3A370TestMethodsandDefinitionsforMechanicalTestingofSteelProductsA1016/A1016MSpecificationforGeneralRequirementsforFerriticAlloySteel,AusteniticAlloySteel,andStainlessSteelTubesE23TestMethodsforNotchedBarImpactTestingofMe-t...
