bs en 448-2003区域供暖管道.直埋式热水供应网用预先绝热连接的管道系统.聚氨酯热绝缘和聚乙烯外覆层钢管用成套配件_第1页
bs en 448-2003区域供暖管道.直埋式热水供应网用预先绝热连接的管道系统.聚氨酯热绝缘和聚乙烯外覆层钢管用成套配件_第2页
bs en 448-2003区域供暖管道.直埋式热水供应网用预先绝热连接的管道系统.聚氨酯热绝缘和聚乙烯外覆层钢管用成套配件_第3页
bs en 448-2003区域供暖管道.直埋式热水供应网用预先绝热连接的管道系统.聚氨酯热绝缘和聚乙烯外覆层钢管用成套配件_第4页
bs en 448-2003区域供暖管道.直埋式热水供应网用预先绝热连接的管道系统.聚氨酯热绝缘和聚乙烯外覆层钢管用成套配件_第5页
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BSEN4482003区域供暖管道直埋式热水供应网用预先绝热连接的管道系统聚氨酯热绝缘和聚乙烯外覆层钢管用成套配件BRITISHSTANDARDBSEN4482ABRITISHSTANDARDICS23ALISTOFORGANIZATIONSREPRESENTEDONTHISSUBCOMMITTEECANBEOBTAINEDONREQUESTTOITSSECRETARYCROSSREFERENCESTHEBRITISHSTANDARDSWHICHIMPLEMENTINTERNATIONALOREUROPEANPUBLICATIONSREFERREDTOINTHISDOCUMENTMAYBEFOUNDINTHEBSICATALOGUEUNDERTHESECTIONENTITLED“INTERNATIONALSTANDARDSCORRESPONDENCEINDEX”,ORBYUSINGTHE“SEARCH”FACILITYOFTHEBSIELECTRONICCATALOGUEOROFBRITISHSTANDARDSONLINETHISPUBLICATIONDOESNOTPURPORTTOINCLUDEALLTHENECESSARYPROVISIONSOFACONTRACTUSERSARERESPONSIBLEFORITSCORRECTAPPLICATIONCOMPLIANCEWITHABRITISHSTANDARDDOESNOTOFITSELFCONFERIMMUNITYFROMLEGALOBLIGATIONSAIDENQUIRERSTOUNDERSTANDTHETEXTPRESENTTOTHERESPONSIBLEINTERNATIONAL/EUROPEANCOMMITTEEANYENQUIRIESONTHEINTERPRETATION,ORPROPOSALSFORCHANGE,ANDKEEPTHEUKINTERESTSINFORMEDMONITORRELATEDINTERNATIONALANDEUROPEANDEVELOPMENTSANDPROMULGATETHEMINTHEUKSUMMARYOFPAGESTHISDOCUMENTCOMPRISESAFRONTCOVER,ANINSIDEFRONTCOVER,THEENTITLEPAGE,PAGES2TO28,ANINSIDEBACKCOVERANDABACKCOVERTHEBSICOPYRIGHTDATEDISPLAYEDINTHISDOCUMENTINDICATESWHENTHEDOCUMENTWASLASTISSUEDAMENDMENTSISSUEDSINCEPUBLICATIONAMDNODATECOMMENTSCOPYRIGHTEUROPEANCOMMITTEEFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHCENNOTFORRESALENOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,EUROPEANSTANDARDNORMEEUROP0ENNEEUROP0ISCHENORMEN448FEBRUARY2ANATIONALSTANDARDWITHOUTANYALTERATIONUPTODATELISTSANDBIBLIOGRAPHICALREFERENCESCONCERNINGSUCHNATIONALSTANDARDSMAYBEOBTAINEDONAPPLICATIONTOTHEMANAGEMENTCENTREORTOANYCENMEMBERTHISEUROPEANSTANDARDEXISTSINTHREEOFFICIALVERSIONSENGLISH,FRENCH,GERMANAVERSIONINANYOTHERLANGUAGEMADEBYTRANSLATIONUNDERTHERESPONSIBILITYOFACENMEMBERINTOITSOWNLANGUAGEANDNOTIFIEDTOTHEMANAGEMENTCENTREHASTHESAMESTATUSASTHEOFFICIALVERSIONSCENMEMBERSARETHENATIONALSTANDARDSBODIESOFAUSTRIA,BELGIUM,CZECHREPUBLIC,DENMARK,FINLAND,FRANCE,GERMANY,GREECE,HUNGARY,ICELAND,IRELAND,ITALY,LUXEMBOURG,MALTA,NETHERLANDS,NORWAY,PORTUGAL,SLOVAKREPUBLIC,SPAIN,SWEDEN,SWITZERLANDANDUNITEDKINGDOMEUROPEANCOMMITTEEFORSTANDARDIZATIONCOMIT0EUROP0ENDENORMALISATIONEUROP0ISCHESKOMITEEF0RNORMUNGMANAGEMENTCENTRERUEDESTASSART,36B1AINFORMATIVEGUIDELINESFORINSPECTIONANDTESTING21COPYRIGHTEUROPEANCOMMITTEEFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHCENNOTFORRESALENOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,EN4482A1MANUFACTURERSTYPETEST21A2MANUFACTURERSQUALITYSURVEILLANCE21A3EXTERNALINSPECTION21A4EXTENTOFINSPECTION21A5MANUFACTURERSRESPONSIBILITY21ANNEXBINFORMATIVEPROCEDURESFORPOLYETHYLENEWELDING24B1INTRODUCTION24B2REQUIREMENTSFORSITE,MACHINEANDEQUIPMENT24B3ITEMS24B4BUTTFUSIONWELDING25B41EQUIPMENT25B42WELDINGPROCEDURE26B5EXTRUSIONWELDING26B51EQUIPMENT26B52WELDINGPROCEDURE27BIBLIOGRAPHY28COPYRIGHTEUROPEANCOMMITTEEFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHCENNOTFORRESALENOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,EN4482ANATIONALSTANDARD,EITHERBYPUBLICATIONOFANIDENTICALTEXTORBYENDORSEMENT,ATTHELATESTBYAUGUST2AANDBAREINFORMATIVETHISDOCUMENTINCLUDESABIBLIOGRAPHYACCORDINGTOTHECEN/CENELECINTERNALREGULATIONS,THENATIONALSTANDARDSORGANIZATIONSOFTHEFOLLOWINGCOUNTRIESAREBOUNDIMPLEMENTTHISEUROPEANSTANDARDAUSTRIA,BELGIUM,CZECHREPUBLIC,DENMARK,FINLAND,FRANCE,GERMANY,GREECE,HUNGARY,ICELAND,IRELAND,ITALY,LUXEMBOURG,MALTA,NETHERLANDS,NORWAY,PORTUGAL,SLOVAKIA,SPAIN,SWEDEN,SWITZERLANDANDTHEUNITEDKINGDOMCOPYRIGHTEUROPEANCOMMITTEEFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHCENNOTFORRESALENOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,EN4482ASTEELSERVICEPIPEANDAPOLYETHYLENECASINGFORINFORMATIONONTHEMINIMUMEXPECTEDTHERMALLIFEWITHOPERATIONATVARIOUSTEMPERATURESWITHRESPECTTOPURFOAMPERFORMANCESEEEN2532ASTEELSERVICEFITTINGFROMDN2AOFTHISSTANDARDPROCEDURESFORPEWELDINGAREGIVENINANNEXBOFTHISSTANDARDNOTETHISSTANDARDDOESNOTINCLUDERULESFORCALCULATIONOFLOADSANDSTRESSES2NORMATIVEREFERENCESTHISEUROPEANSTANDARDINCORPORATESBYDATEDORUNDATEDREFERENCE,PROVISIONSFROMOTHERPUBLICATIONSTHESENORMATIVEREFERENCESARECITEDATTHEAPPROPRIATEPLACESINTHETEXT,ANDTHEPUBLICATIONSARELISTEDHEREAFTERFORDATEDREFERENCES,SUBSEQUENTAMENDMENTSTOORREVISIONSOFANYOFTHESEPUBLICATIONSAPPLYTOTHISEUROPEANSTANDARDONLYWHENINCORPORATEDINITBYAMENDMENTORREVISIONFORUNDATEDREFERENCESTHELATESTEDITIONOFTHEPUBLICATIONREFERREDTOAPPLIESINCLUDINGAMENDMENTSEN2532ADEVIATIONINDIRECTIONOFTHESTEELPIPECENTRELINES34FORGEDTPIECEMANUFACTUREDBYHOTFORMINGOFEITHERSTEELPIPESORSTEELPLATESWHICHARESUBSEQUENTLYWELDEDTOGETHER35WELDINGSADDLEBUTTWELDINGFITTINGTOBEWELDEDINTOTHEMAINPIPEFORTHEWELDEDCONNECTIONBETWEENTHEMAINPIPEANDTHEBRANCHPIPEINATPIECE36WELDEDTPIECEMANUFACTUREDBYWELDINGTOGETHERPIECESOFSTEELPIPESWITHORWITHOUTTHEUSEOFAWELDINGSADDLEORADRAWNCOLLARONTHEMAINPIPEKEY31COLDFORMEDBEND32BUTTWELDINGBEND33BENDINGANGLE,A34FORGEDTPIECE35TPIECEWITHWELDINGSADDLE36ATPIECEWITHDRAWNCOLLAR36BDIRECTLYWELDEDTPIECEFIGURE1EXAMPLESCOPYRIGHTEUROPEANCOMMITTEEFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHCENNOTFORRESALENOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,EN4482AFIXEDPOINT4REQUIREMENTS41STEELPARTS411QUALI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