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1、BRITISHSTANDARDBSEN12020-2:2001Aluminiumandaluminiumalloys-ExtrudedprecisionprofilesinalloysENAW-6060andENAW-6063-Part2:TolerancesondimensionsandformTheEuropeanStandardEN12020-2:2001hasthestatusofaBritishStandardICs77.150.10ONOCOPYINGWITHOUT--```,-`-`,,`,,`,`,,`---BSIPERMISSIONEXCEPT
2、ASPERMITTEDBYCOPYRIGHTLAWCopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNoreproductionornetworkingpermittedwithoutlicensefromIHSNotforResaleBSEN12020-2:2001NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN12020-2:2001.Togetherwith
3、thestandardslistedinthefollowingtable,itsupersedesBS1474:1987whichiswithdrawn.ThispartofBSEN12020ispublishedtogetherwith:-BSEN755-9,Aluminiumandaluminiumalloys-Extrudedrod/bar,tubeandprofiles-Part9:Profiles,tolerancesondimensionsandform;-BSEN12020-1,Aluminiumandaluminiumalloys-Extrud
4、edprecisionprofilesinalloysENAW-6060andENAW-6063-Part1:Technicalconditionsforinspectionanddelivery.ThefollowingtablegivesthefulllistofimplementedEuropeanStandardswhichsupersedeBS1474:1987.SupersededBritishSupersedingEuropeanStandardsStandardsBS1474:1987BSEN515~1993,BSEN573-3~1995,BSE
5、N573-411995,BSEN755-1~1997,BSEN755-2~1997,BSEN755-3:1996,BSEN755-4:1996,BSEN755-5:1996,BSEN755-6~1996,BSEN755-7:1998,BSEN755-8:1998,BSEN755-9:2001,BSEN12020-1:2001,BSEN12020-2~2001oTheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteeNFEí35,Lightmetalsandtheiralloys,toSu
6、bcommitteeNFE/35/5,Wroughtaluminiumandaluminiumalloys,whichhastheresponsibilityto:-aidenquirerstounderstandthetext;’-presenttotheresponsibleEuropeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;-monitorrelatedinternationalandEuropeandevel
7、opmentsandpromulgatethemintheUK.Alistoforganizationsrepresentedonthissubcommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSIStandardsCatalogueunderthesectionentitle
8、d“Internatio
