1、March 2017 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.70!%c+“2640898www.din.deDIN
2、 EN ISO 8331Rubber and plastics hoses and hose assemblies Guidelines for selection, storage, use and maintenance (ISO 8331:2016);English version EN ISO 8331:2016,English translation of DIN EN ISO 8331:2017-03Gummi und Kunststoffschluche und schlauchleitungen Richtlinien fr die Auswahl, Lagerung, Ver
3、wendung und Wartung (ISO 8331:2016);Englische Fassung EN ISO 8331:2016,Englische bersetzung von DIN EN ISO 8331:2017-03Tuyaux et flexibles en caoutchouc et en plastique Lignes directrices pour la slection, le stockage, lutilisation et la maintenance (ISO 8331:2016);Version anglaise EN ISO 8331:2016,
4、Traduction anglaise de DIN EN ISO 8331:2017-03SupersedesDIN EN ISO 8331:201411www.beuth.deDocument comprises 19 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.17 DIN EN ISO 8331:2017-03 2 A comma is used as the decimal mark
5、er. National foreword This document (EN ISO 8331:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” (Secretariat: BSI, United Kingdom). The responsible German body
6、involved in its preparation was DIN-Normenausschuss Elastomertechnik (DIN Standards Committee Elastomer Technology), Working Committee NA 045-02-12 AA Gummi- und Kunststoffschluche sowie Schlauchleitungen (Spiegelgremium zu CEN/TC 218; ISO/TC 45/SC 1). The DIN Standards corresponding to the Internat
7、ional Standards referred to in this document are as follows: ISO 1402 DIN EN ISO 1402 ISO 8031 DIN EN ISO 8031 ISO 8330 DIN EN ISO 8330 Amendments This standard differs from DIN EN ISO 8331:2014-11 as follows: a) the standard has been editorially and technically revised; b) Clause 3 “Terms and defin
8、itions” has been added; c) Clause 4.9 “Hydraulic hoses” has been deleted; d) ISO 8330 has been added to the Bibliography. Previous editions DIN EN ISO 8331: 2011-08, 2014-11 National Annex NA (informative) Bibliography DIN EN ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testin
9、g DIN EN ISO 8031, Rubber and plastics hoses and hose assemblies Determination of electrical resistance and conductivity DIN EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8331 November 2016 ICS 23.040.70 Supersedes EN I
10、SO 8331:2014English Version Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use and maintenance(ISO 8331:2016) Tuyaux et flexibles en caoutchouc et en plastique - Lignes directrices pour la slection, le stockage, lutilisation et la maintenance (ISO 8331:2016) Gummi
11、- und Kunststoffschluche und -schlauchleitungen - Richtlinien fr die Auswahl, Lagerung, Verwendung und Wartung (ISO 8331:2016)This European Standard was approved by CEN on 19 October 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
12、ving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three of
13、ficial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies
14、of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain
15、, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide f
16、or CEN national Members. Ref. No. EN ISO 8331:2016 EEuropean foreword .31 Scope . 52 Normative references 53 Terms and definitions . 54 General recommendations 54.1 Selection criteria 54.2 Storage conditions . 64.2.1 General 64.2.2 Storage period 64.2.3 Temperature 74.2.4 Humidity . 74.2.5 Light 74.
17、2.6 Ozone . 74.2.7 Environment 74.2.8 Sources of heat . 74.2.9 Electric and magnetic fields . 74.2.10 Method of storing 74.2.11 Rodents 74.2.12 Issue from storage 84.2.13 Return to storage . 84.3 Use and maintenance 84.3.1 Handling 84.3.2 Pressure . 84.3.3 Temperature 84.3.4 Products conveyed . 84.3
18、.5 Environment 84.3.6 Bending radii . 84.3.7 Torsional stress . 84.3.8 Tensile stress . 94.3.9 Vibration . 94.3.10 Assembly of end fittings 94.3.11 Leakage 94.3.12 Electrical properties . 94.3.13 Fixed installations . 94.3.14 Moving parts 94.3.15 Marking/identification . 94.3.16 Maintenance . 104.3.
19、17 Repairing of hoses . 105 Additional recommendations for specific applications 105.1 General 105.2 Welding and gas-cutting hoses . 105.3 Steam hoses 105.4 Hoses for the conveyance of foodstuffs and drinking water. 105.5 Hoses for the conveyance of abrasive products . 105.6 Hoses for the conveyance
20、 of corrosive or aggressive products . 115.7 Hoses for the conveyance of flammable products . 115.8 Automotive hoses 125.9 Fire-fighting hoses 125.9.1 General. 125.9.2 Special points to be observed 135.10 Oil-industry hoses and hose assemblies 145.10.1 General. 145.10.2 Special points to be observed
21、 14Contents PageBibliography.17DIN EN ISO 8331:2017-03 EN ISO 8331:2016 (E) 2Foreword 4European foreword This document (EN ISO 8331:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products“ in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses an
22、d hose assemblies” the secretariat of which is held by BSI. 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 by May 2017, and conflicting national standards shall be withdrawn at the latest by May 201
23、7. 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 rights. This document supersedes EN ISO 8331:2014. According to the CEN-CENELEC Internal Re
24、gulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,
25、 Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8331:2016 has been approved by CEN as EN ISO 8331:2016 without any modification. DIN EN ISO
26、8331:2017-03 EN ISO 8331:2016 (E)3 ForewordISO (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 technical committees. Each member body int
27、erested 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 with the International Electrotechnic
28、al Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO docu
29、ments should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsib
30、le for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for
31、the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (T
32、BT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.This fourth edition cancels and replaces the third edition (ISO 8331:2014), which has been t
33、echnically revised with the following change: 4.9 has been deleted.DIN EN ISO 8331:2017-03 EN ISO 8331:2016 (E) 4 1 ScopeThis document sets out recommendations designed to maintain rubber and plastics hoses and hose assemblies, prior to use, in a condition as close as possible to the condition they
34、were in when they were received and to obtain the expected service life.NOTE It is intended that this document be used in conjunction with any applicable national statutory regulations.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their c
35、ontent constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testingISO 2230, Rubber
36、 products Guidelines for storageISO 8031, Rubber and plastics hoses and hose assemblies Determination of electrical resistance and conductivity3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 8330 apply.ISO and IEC maintain terminological databases for
37、 use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 General recommendations4.1 Selection criteriaIt is in the best interests of the user to select hoses or hose assemblies com
38、plying with national or international standards whenever such standards exist for the intended application. For applications outside the scope of such standards, needing special requirements or for which the necessary information is not available, the hose manufacturer or trade association should be
39、 consulted.The following points should be taken into consideration when selecting a hose or hose assembly for a specific application:a) Operational environment: ambient temperature; atmospheric conditions; contact with chemically aggressive liquids;DIN EN ISO 8331:2017-03 EN ISO 8331:2016 (E)5 conta
40、ct with other deleterious media.b) Media conveyed: liquid; gaseous; solids; combinations of the above.c) Method of conveyance: pressure (including rate of flow); suction (including rate of flow); gravity (including rate of flow); assisted (mixture of solid/fluid, solid/air).d) Operating conditions:
41、pressure and temperature of product conveyed; frequency of use.e) Installation: degree of curvature (minimum bend radius); vibration of system; risk of damage by impact and abrasion; use of correct type of connection; type of movement and frequency.4.2 Storage conditions4.2.1 GeneralDuring storage,
42、especially for long periods, and when hoses and hose assemblies are exposed to certain adverse influences, the physical properties of hoses and hose assemblies can undergo changes that may result in them no longer having the optimum characteristics corresponding to their application when they are pu
43、t into service. The storage conditions should be such as will offer maximum protection and minimize deterioration of the articles during storage.4.2.2 Storage periodThe storage period should be kept to a minimum. Rotation of stock is therefore essential and the “first-in first-out” rule applied. For
44、 long-term storage, the following maximum storage periods are recommended: for bulk hoses (without fittings attached), maximum of 4 years; for hose assemblies, maximum of 2 years.These two periods can be interpreted as consecutive for a maximum storage duration of 6 years (4 years as bulk hose + 2 y
45、ears as hose assembly).DIN EN ISO 8331:2017-03 EN ISO 8331:2016 (E) 6 4.2.3 TemperatureThe storage temperature should be below 25 C and articles stored away from direct heat sources. Storage above 25 C may shorten the life of the hose or hose assembly. Articles should not be subjected to temperature
46、s over 50 C or below 30 C or to abnormal fluctuations in temperature during the storage period. See ISO 2230 for information on the effect of higher and lower temperatures on the storage time.4.2.4 HumidityThe relative humidity should not exceed 70 % or 65 % for polyurethane hose products.4.2.5 Ligh
47、tThe articles should be stored in a dark place away from sunlight and strong artificial light. If the storage area has windows or glazed openings, they should be obscured with red, orange or white coverings.4.2.6 OzoneDue to the harmful effect of ozone on rubber-based articles, storage areas should
48、not contain equipment capable of generating ozone, for example mercury vapour lamps or tubes, high-voltage electrical equipment, electric motors or other equipment likely to cause sparks or electrical discharges.4.2.7 EnvironmentArticles should not be placed in contact with certain products or exposed to their vapours, particularly solvents, oils, greases, acids, disinfectants, etc. Some metals, such as copper, iron and mangan
