1、BRITISH STANDARD BS EN ISO 128-21:2001 Incorporating Amendment No. 1 to BS ISO 128-21:1997 (renumbers the BS ISO as BS EN ISO 128-21:2001) Technical drawings General principles of presentation Part 21: Preparation of lines by CAD systems The European Standard EN ISO 128-21:2001 has the status of a B
2、ritish Standard ICS 01.100.01; 35.240.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN ISO 128-21:2001 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Committee, was published under the authority of the Standa
3、rds Committee on 15 July 2000 BSI 24 April 2002 ISBN 0 580 36230 2 National foreword This British Standard is the official English language version of EN ISO 128-21:2001. It is identical with ISO 128-21:1997. The UK participation in its preparation was entrusted by Technical Committee TDW/4, Enginee
4、ring drawing, metrology, precision measurement and all related documentation, to Subcommittee TDW/4/-/1, General drawing principles, conventions and related documentation, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secreta
5、ry. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards E
6、lectronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to und
7、erstand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front co
8、ver, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii and iii, a blank page, pages 1 to 13 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.
9、 Date Comments 13521 24 April 2002 Implementation of the European StandardEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO12821 October2001 ICS01.100.01;35.240.10 Englishversion TechnicaldrawingsGeneralprinciplesofpresentationPart 21:PreparationoflinesbyCADsystems(ISO12821:1997) Dessinstechnique
10、sPrincipesgnrauxdereprsentation Partie21:PrparationdestraitsparsystmesdeCAO (ISO12821:1997) TechnischeZeichnungenAllgemeineGrundlagender DarstellungTeil21:AusfhrungvonLinienmitCAD Systemen(ISO12821:1997) ThisEuropeanStandardwasapprovedbyCENon30September2001. CENmembersareboundtocomplywiththeCEN/CENE
11、LECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthre
12、eofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,Fr
13、ance,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyf
14、ormandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO12821:2001EINESO821:12(1002E) 2 CORRECTED20020102 Foreword ThetextoftheInternationalStandardfromTechnicalCommitteeISO/TC10“Technicaldrawings, productdefinitionandrelateddocumentation“oftheInternationalOrganizationforStandardization
15、 (ISO),thesecretariatofwhichisheldbyCMC. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofan identicaltextorbyendorsement,atthelatestbyApril2002,andconflictingnationalstandardsshallbe withdrawnatthelatestbyApril2002. AccordingtotheCEN/CENELECInternalRegulations,thena
16、tionalstandardsorganizationsofthe followingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic, Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands, Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom. ecitontnemesrodnE TxetehtforetnI
17、ehtradnatSlanoitanOSId821sah7991:12rppaneebybdevosaNECruEanaepo radnatSwdiynatuohtmfidoica.noit NOTENormativereferencestoInternationalStandardsarelistedinannexZA(normative). 4egaP ENISO12821:20014egaP ENISO12821:20016egaP ENISO12821:20016egaP ENISO12821:2001blankENISO12821:20011ENISO12821:20012ENISO
18、12821:20013ENISO12821:20014ENISO12821:20015ENISO12821:20016ENISO12821:20017ENISO12821:20018ENISO12821:20019ENISO12821:200110ENISO12821:2001111002:12821OSINE21 ENISO12821:200112INESO821:12(1002E) 3 AnnexZA (normative) Normativereferencestointernationalpublications withtheirrelevantEuropeanpublication
19、s ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublications applytothisEuropeanStandardon
20、lywhenincorporatedinitbyamendmentorrevision.Forundated referencesthelatesteditionofthepublicationreferredtoapplies(includingamendments). NOTEWhereanInternationalPublicationhasbeenmodifiedbycommonmodifications,indicatedby (mod.),therelevantEN/HDapplies. Publication Year Title EN Year ISO12820 1996 Te
21、chnicaldrawingsGeneral principlesofpresentationPart20: Basicconventionsforlines ENISO12820 2001 ISO5455 1979 TechnicaldrawingsScales ENISO5455 1994 1002:12821OSINE51 ENISO12821:200113BS EN ISO 128-21:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independe
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