Designation:C662−16AnAmericanNationalStandardStandardSpecificationforImperviousGraphitePipeandThreading1ThisstandardisissuedunderthefixeddesignationC662;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversthestandardizationofthepipesizesandtypesofthreadsusedtojoinimperviousgraphitepipeandfittings.Thethreadstandardsmayalsobeappliedtoimperviouscarbonpipeandfittings.Itislimitedtophysicaldimensions.2.Terminology2.1Definitions:2.1.1imperviousgraphite,n—manufacturedgraphitethathasbeenimpregnatedwitharesinousmaterialtomakethefinalarticleimpervioustoliquidsintherecommendedoperatingrange.2.1.2imperviouscarbon,n—manufacturednon-graphitizedstructuralcarbonthathasbeenimpregnatedwitharesinousmaterialtomakethefinalarticleimpervioustoliquidsintherecommendedoperatingrange.3.RequirementsforImperviousGraphitePipe3.1TheeightstandardpipesizesareshowninTable1withpermissiblevariationsindimensions.3.2Fig.1givesthemalethreaddimensionsforimperviousgraphitepipe.3.3Fig.2givesthefemalethreaddimensionsforimpervi-ousgraphitefittings.4.Keywords4.1imperviouscarbonpipe;imperviousgraphitepipe;threadingspecifications1ThisspecificationisunderthejurisdictionofASTMCommitteeD02onPetroleumProducts,LiquidFuels,andLubricantsandisthedirectresponsibilityofSubcommitteeD02.F0onManufacturedCarbonandGraphiteProducts.CurrenteditionapprovedJan.1,2016.PublishedFebruary2016.Originallyapprovedin1970.Lastpreviouseditionapprovedin2010asC662–70(2010).DOI:10.1520/C0662-16.*ASummaryofChangessectionappearsattheendofthisstandardCopyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959.UnitedStates1TABLE1PhysicalDimensionsofImperviousGraphitePipePipeSize(nominalInsideDiameter),in.TypicalLimitsLengthAInsideDiameterOutsideDiameterminmaxminmaxin.+1⁄4−0mm+6...
