Designation:D3350−21StandardSpecificationforPolyethylenePlasticsPipeandFittingsMaterials1ThisstandardisissuedunderthefixeddesignationD3350;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoverstheidentificationofpolyeth-yleneplasticpipeandfittingsmaterialsinaccordancewithacellclassificationsystem.Itisnotthefunctionofthisspecifi-cationtoprovidespecificengineeringdatafordesignpurposes,tospecifymanufacturingtolerances,ortodeterminesuitabilityforuseforaspecificapplication.1.1.1SomeplasticpipeandfittingPEcompoundsclassifiedbythisstandardaresoldasabasematerialandthencombinedwithothermaterial(s)(forexample,colororadditiveconcen-trate)bythepipeorfittingmanufacturerintoafinalclassifiedcompoundeitherpriortoorduringproductionofthefinalarticle.Thisstandard,excludingtherequirementsofTable1,properties5and6,and6.1.1,canbeusedforpropertyverificationoftheincomingbasematerial(s)inaccordancewith8.1.1.1.2InthecaseofPEcompoundssoldasthecompoundclassifiedbythestandard,see8.1regardingpropertyverifica-tionoftheincomingclassifiedcompound.1.1.3Compoundswithacellclassificationvalueotherthan‘0’fortheHydrostaticStrengthClassification(property6)relyonadefinedformulation.Thecompositionofthedefinedformulationcanbeobtainedfromtheowneroftheformulation.NOTE1—DeviationsfromthedefinedformulationmayaffecttheHydrostaticStrengthClassification.1.2Polyethyleneplasticmaterials,beingthermoplastic,arereprocessableandrecyclable(Note3).Thisspecificational-lowsfortheuseofthosepolyethylenematerials,providedthatallspecificrequirementsofthisspecificationaremet.NOTE2—Thenotesinthisspecificationareforinformationonlyandshallnotbeconsideredpartofthisspecification.NOTE3—SeeGuideD5033forinformationanddefinitionsrelatedtorecycledplastics.1.3ThevaluesstatedinSIunitsaretoberegardedas...
