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BRITISHSTANDARDBSEN448:2003Districtheatingpipes—Preinsulatedbondedpipesystemsfordirectlyburiedhotwaternetworks—Fittingassembliesofsteelservicepipes,polyurethanethermalinsulationandoutercasingofpolyethyleneTheEuropeanStandardEN448:2003hasthestatusofaBritishStandardICS23.040.40

 
 CopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--``````-`-`,,`,,`,`,,`---BSEN448:2003ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon27February2003©BSI27February2003ISBN0580413160NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN448:2003.ItsupersedesBSEN448:1995whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteeRHE/9,Thermalinsulatingmaterials,toSubcommitteeRHE/9/3,Insulationofundergroundpipelines,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthissubcommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to28,aninsidebackcoverandabackcover.TheBSIcopyrightdatedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsCopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--``````-`-`,,`,,`,`,,`---EUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN448February2003ICS23.040.40SupersedesEN448:1994EnglishversionDistrictheatingpipes-Preinsulatedbondedpipesystemsfordirectlyburiedhotwaternetworks-Fittingassembliesofsteelservicepipes,polyurethanethermalinsulationandoutercasingofpolyethyleneTuyauxdechauffageurbain-Systèmesbloquésdetuyauxpré-isoléspourlesréseauxd'eauchaudeenterrésdirectement-Raccordspré-isolésenacierpourtubesdeserviceenacier,isolationthermiqueenpolyuréthaneettubedeprotectionenpolyéthylèneFernwärmerohre-WerkmäßiggedämmteVerbundmantelrohrsystemefürdirekterdverlegteFernwärmenetze-Verbund-Formstücke,bestehendausStahl-Mediumrohr,Polyurethan-WärmedämmungundAußenmantelausPolyethylenThisEuropeanStandardwasapprovedbyCENon28November2002.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,SlovakRepublic,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2003CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN448:2003ECopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--``````-`-`,,`,,`,`,,`---EN448:2003(E)2ContentspageForeword......................................................................................................................................................................4Introduction.................................................................................................................................................................51Scope..............................................................................................................................................................62Normativereferences....................................................................................................................................63Termsanddefinitions....................................................................................................................................7