最新《标准规范》ISO 13968-2008 塑料管道及输送系统 热塑性塑料管 环挠性的测定(英文).pdf
《最新《标准规范》ISO 13968-2008 塑料管道及输送系统 热塑性塑料管 环挠性的测定(英文).pdf》由会员分享,可在线阅读,更多相关《最新《标准规范》ISO 13968-2008 塑料管道及输送系统 热塑性塑料管 环挠性的测定(英文).pdf(12页珍藏版)》请在得力文库 - 分享文档赚钱的网站上搜索。
1、BS EN ISO13968:2008ICS 23.040.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPlastics piping andducting systems Thermoplastics pipes Determination ofring flexibility(ISO13968:2008)This British Standardwas published under theauthority of the StandardsPolicy an
2、d StrategyCommittee on 30 June 2009 BSI 2009ISBN 978 0 580 56653 0Amendments/corrigenda issued since publicationDateCommentsBS EN ISO 13968:2008National forewordThis British Standard is the UK implementation of EN ISO 13968:2008.It supersedes BS EN 1446:1996 which is withdrawn.The UK participation i
3、n its preparation was entrusted to TechnicalCommittee PRI/88/4,Test methods.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract.Users are responsible for its correct ap
4、plication.Compliance with a British Standard cannot confer immunityfrom legal obligations.w w w.b z f x w.c o mEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 13968October 2008ICS 23.040.20Supersedes EN 1446:1996 English VersionPlastics piping and ducting systems-Thermoplastics pipes-Determina
5、tion of ring flexibility(ISO 13968:2008)Systmes de canalisations et de gaines en matiresplastiques-Tubes en matires thermoplastiques-Dtermination de la flexibilit annulaire(ISO 13968:2008)Kunststoff-Rohrleitungs-und Schutzrohrsysteme-Rohreaus Thermoplasten-Bestimmung der Ringflexibilitt(ISO13968:200
6、8)This European Standard was approved by CEN on 14 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists and bibliographical refe
7、rences concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions(English,French,German).A version in any other language made by translationunder the responsibility of a CEN member into i
8、ts own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria,Belgium,Bulgaria,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembour
9、g,Malta,Netherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:rue de Stassart,36 B-1050 Brussels 2008 CENAll rights of exploitation i
10、n any form and by any means reservedworldwide for CEN national Members.Ref.No.EN ISO 13968:2008:Ew w w.b z f x w.c o mBS EN ISO 13968:2008EN ISO 13968:2008(E)3 Foreword This document(EN ISO 13968:2008)has been prepared by Technical Committee ISO/TC 138 Plastics pipes,fittings and valves for the tran
11、sport of fluids in collaboration with Technical Committee CEN/TC 155“Plastics piping systems and ducting systems”the secretariat of which is held by NEN.This European Standard shall be given the status of a national standard,either by publication of an identical text or by endorsement,at the latest
12、by April 2009,and conflicting national standards shall be withdrawn at the latest by April 2009.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.CEN and/or CENELEC shall not be held responsible for identifying any or all such patent
13、 rights.This document supersedes EN 1446:1996.According to the CEN/CENELEC Internal Regulations,the national standards organizations of the following countries are bound to implement this European Standard:Austria,Belgium,Bulgaria,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Germany,Greece,H
14、ungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,Switzerland and the United Kingdom.Endorsement notice The text of ISO 13968:2008 has been approved by CEN as a EN ISO 13968:2008 without any modification.w w w.b z
15、 f x w.c o mBS EN ISO 13968:2008ISO 13968:2008(E)ISO 2008 All rights reserved iiiForeword ISO(the International Organization for Standardization)is a worldwide federation of national standards bodies(ISO member bodies).The work of preparing International Standards is normally carried out through ISO
16、 technical committees.Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.International organizations,governmental and non-governmental,in liaison with ISO,also take part in the work.ISO collaborates closely
17、with the International Electrotechnical Commission(IEC)on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,Part 2.The main task of technical committees is to prepare International Standards.Draft Internat
18、ional Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an International Standard requires approval by at least 75%of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the
19、 subject of patent rights.ISO shall not be held responsible for identifying any or all such patent rights.ISO 13968 was prepared by Technical Committee ISO/TC 138,Plastics pipes,fittings and valves for the transport of fluids,Subcommittee SC 5,General properties of pipes,fittings and valves of plast
20、ic materials and their accessories Test methods and basic specifications.This second edition cancels and replaces the first edition(ISO 13968:1997),which has been technically revised.w w w.b z f x w.c o mBS EN ISO 13968:2008w w w.b z f x w.c o mBS EN ISO 13968:2008INTERNATIONAL STANDARD ISO 13968:20
21、08(E)ISO 2008 All rights reserved 1Plastics piping and ducting systems Thermoplastics pipes Determination of ring flexibility 1 Scope This International Standard specifies a method for testing the ring flexibility of a thermoplastics pipe having a circular cross-section.The method enables determinat
22、ion of the deflection,and necessary force,at which physical damage,if any,occurs within the specified diametric deflection.2 Normative references The following referenced documents are indispensable for the application of this document.For dated references,only the edition cited applies.For undated
23、references,the latest edition of the referenced document(including any amendments)applies.ISO 9969,Thermoplastics pipes Determination of ring stiffness 3 Terms and definitions For the purposes of this document,the following terms and definitions apply.3.1 ring flexibility ability of a pipe to resist
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