1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Plastics hoses and hose assemblies - Textile-reinforced types for hydraulic applications - SpecificationBS EN ISO 3949:2018National forewordThis British Standard is the UK implementation of EN ISO 3949:2018. It is ident
2、ical to ISO 3949:2018. It supersedes BS EN ISO 3949:2014, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.A list of organizations represented on this committee can be obtained on request to
3、its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 89085 7ICS 23.100.40; 83.140.40Compliance with a Brit
4、ish Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 3949:2018EUROPEAN STANDARDNORME
5、EUROPENNEEUROPISCHE NORMEN ISO 3949July 2018ICS 23.040.70; 23.100.40; 83.140.40 Supersedes EN ISO 3949:2014EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 3949:
6、2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersPlastics hoses and hose assemblies - Textile-reinforced types for hydraulic applications - Specification (ISO 3949:2018)Tuyaux et flexibles en plastique - Types hydrauliques avec armature textil
7、e - Spcifications (ISO 3949:2018)Kunststoffschluche und -schlauchleitungen - Textilverstrkte Typen fr hydraulische Anwendungen - Spezifikationen (ISO 3949:2018)This European Standard was approved by CEN on 6 July 2018.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st
8、ipulate the conditions for giving 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
9、 Standard exists in three official 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
10、 national standards bodies 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
11、, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 3949:2018 (E)European forewordThis document (EN ISO 3949:2018) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” in collaboration with Technical Committee CEN/TC 21
12、8 “Rubber and plastics hoses and 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 January 2019, and conflicting national standards shall be
13、withdrawn at the latest by January 2019.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN ISO 3949:2014.According to the CEN
14、-CENELEC Internal Regulations, the national standards organisations 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, Hungar
15、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 3949:2018 has been approved by CEN as EN ISO 3949:2018 without any
16、 modification.iiBS EN ISO 3949:2018ISO 3949:2018Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 24 Classification 25 Materials and construction . 25.1 Hoses . 25.2 Hose assemblies . 26 Dimensions and tolerances . 26.1 Diameters 26.2 Concentricity. 37 Physical properties 37.1
17、Hydrostatic requirements . 37.2 Change in length 47.3 Minimum bend radius 47.4 Resistance to impulse 57.5 Leakage of hose assemblies . 57.6 Cold flexibility 57.7 Ozone resistance 57.8 Electrical conductivity 57.9 Fluid resistance 67.9.1 Test pieces . 67.9.2 Oil resistance . 67.9.3 Water-based fluid
18、resistance . 67.9.4 Water resistance . 67.10 Visual examination 68 Frequency of testing 69 Designation 610 Marking 710.1 Hoses . 710.2 Hose assemblies . 711 Recommendations for packing and storage 712 Recommendations for length of supplied hoses and tolerances on lengths of hose assemblies . 713 Tes
19、t certificate . 7Annex A (normative) Type and routine testing of hoses . 8Annex B (informative) Production testing 9Annex C (informative) Recommendations for lengths of supplied hoses and tolerances on lengths of hose assemblies 10Annex D (normative) Test method for electrical conductivity .11Biblio
20、graphy .12 ISO 2018 All rights reserved iiiContents PageBS EN ISO 3949:2018ISO 3949:2018ForewordISO (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 t
21、hrough ISO 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 colla
22、borates closely with the International Electrotechnical 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 approva
23、l criteria needed for the different types of ISO documents 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 subj
24、ect of patent rights. ISO shall not be held responsible 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
25、 name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherenc
26、e to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.htmlThis document was prepared by technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.Th
27、is fifth edition cancels and replaces the fourth edition (ISO 3949:2009), which has been technically revised. The main changes compared to the previous edition are as follows: Clause 1 has been updated to be more precise; Requirements for type R8, hose nominal size 8 have been added in Tables 1, 3,
28、4 and 5; Reference to method A1 of ISO 10619-1:2017, has been added in 7.3; Additional requirement for marking of hoses has been added in 10.1; Reference to ISO 17165-1 has been made in 10.2.iv ISO 2018 All rights reservedBS EN ISO 3949:2018Plastics hoses and hose assemblies - Textile-reinforced typ
29、es for hydraulic applications - Specification1 ScopeThis document specifies requirements for three types of textile-reinforced thermoplastics hose and hose assembly of nominal size from 3,2 to 25. Each type is divided into two classes dependent on electrical conductivity requirements.They are suitab
30、le for use with: oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from 40 C to +93 C; water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from 0 C to +60 C water at temperatures ranging from 0 C to +60 C.This do
31、cument does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies.NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility of the hose with the fluid to be used.2 Normative referencesThe f
32、ollowing documents are referred to in the text in such a way that some or all of their content 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
33、 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testingISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquidsISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of the dimensions of hoses and the lengths of hose assembliesISO
34、6743-4, Lubricants, industrial oils and related products (class L) Classification Part 4: Family H (Hydraulic systems)ISO 6803, Rubber or plastics hoses and hose assemblies Hydraulic-pressure impulse test without flexingISO 7326:2016, Rubber and plastics hoses Assessment of ozone resistance under st
35、atic conditionsISO 8330, Rubber and plastics hoses and hose assemblies VocabularyISO 10619-1:2017, Rubber and plastics hoses and tubing Measurement of flexibility and stiffness Part 1: Bending tests at ambient temperatureISO 10619-2:2017, Rubber and plastics hoses and tubing Measurement of flexibili
36、ty and stiffness Part 2: Bending tests at sub-ambient temperaturesISO 17165-1, Hydraulic fluid power Hose assemblies Part 1: Dimensions and requirementsINTERNATIONAL STANDARD ISO 3949:2018 ISO 2018 All rights reserved 1BS EN ISO 3949:2018ISO 3949:20183 Terms and definitionsFor the purposes of this d
37、ocument, the terms and definitions given in ISO 8330 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: ISO Online browsing platform: available at https:/www.iso.org/obp IEC Electropedia: available at https:/www.electropedia.org/4 Classificatio
38、nThree types of hose are specified, distinguished by their maximum working pressure:a) Type R7: hoses with one or more layers of reinforcement;b) Type R8: hoses with one or more layers of reinforcement, for operation at higher working pressures;c) Type R18: hoses with one or more layers of reinforce
39、ment, 21,0 MPa (210 bar) working pressure based.Each type of hose is divided into two classes according to its electrical properties:1) Class 1, no electrical requirements;2) Class 2, “non-conductive” (see 7.8).5 Materials and construction5.1 HosesHoses shall consist of a seamless thermoplastic lini
40、ng resistant to hydraulic fluids, with suitable textile yarn reinforcement and a thermoplastic cover resistant to hydraulic fluids, water and the weather.For class 2 hoses, the cover shall not be perforated. The cover shall be orange (colour code RAL 2004).5.2 Hose assembliesHose assemblies shall on
41、ly be manufactured with those hose fittings whose functionality conforms to the requirements of 7.1, 7.4, 7.5 and, for class 2 only, 7.8.6 Dimensions and tolerances6.1 DiametersWhen measured in accordance with ISO 4671, the diameters of the hoses shall conform to the values given in Table 1.Table 1
42、Dimensions of hosesNominal sizeInside diametermmMaximum outside diametermmType R7 Type R8 Type R18 Type R7 Type R8 Type R18min. max. min. max. min. max. 3,2 3,4 4,0 3,4 4,0 3,4 4,0 9,5 10,5 9,55 4,6 5,4 4,6 5,4 4,6 5,4 11,4 14,6 10,82 ISO 2018 All rights reservedBS EN ISO 3949:2018ISO 3949:2018Nomin
43、al sizeInside diametermmMaximum outside diametermmType R7 Type R8 Type R18 Type R7 Type R8 Type R18min. max. min. max. min. max. 6,3 6,2 7,0 6,2 7,0 6,2 7,0 13,7 16,8 13,58 7,7 8,5 7,7 8,5 7,7 8,5 15,6 18,6 16,610 9,3 10,3 9,3 10,3 9,3 10,3 18,4 20,3 18,412,5 12,3 13,5 12,3 13,5 12,3 13,5 22,5 24,6
44、22,816 15,5 16,7 15,5 16,7 15,5 16,7 25,8 29,8 27, 219 18,6 19,8 18,6 19,8 18,6 19,8 28,6 33,0 31,525 25,0 26,4 25,0 26,4 25,0 26,4 36,7 38,6 40,46.2 ConcentricityWhen measured in accordance with ISO 4671, the concentricity of the hoses shall conform to Table 2.Table 2 Concentricity of hosesNominal
45、sizeMaximum variation in wall thickness between inside diameter and outside diametermmUp to and including 6,3 0,8Over 6,3 and including 19 1,0Over 19 1,37 Physical properties7.1 Hydrostatic requirementsWhen tested in accordance with ISO 1402 at the relevant proof pressure given in Table 3 and the re
46、levant minimum burst pressure given in Table 4, the hoses and hose assemblies shall not leak.Table 3 Proof pressureNominal sizeTypeR7 R8 R18MPa (bar) MPa (bar) MPa (bar)3,2 42,0 (420) 84,0 (840) 42,0 (420)5 42,0 (420) 70,0 (700) 42,0 (420)6,3 38,4 (384) 70,0 (700) 42,0 (420)8 35,0 (350) 62,0 (620) 4
47、2,0 (420)10 31,4 (314) 56,0 (560) 42,0 (420)12,5 28,0 (280) 49,0 (490) 42,0 (420)16 21,0 (210) 38,5 (385) 42,0 (420)19 17,4 (174) 31,4 (314) 42,0 (420)25 14,0 (140) 28,0 (280) 42,0 (420) ISO 2018 All rights reserved 3BS EN ISO 3949:2018ISO 3949:2018Table 4 Minimum burst pressureNominal sizeTypeR7 R8
48、 R18MPa (bar) MPa (bar) MPa (bar)3,2 84,0 (840) 168,0 (1 680) 84,0 (840)5 84,0 (840) 140,0 (1 400) 84,0 (840)6,3 76,8 (768) 140,0 (1 400) 84,0 (840)8 70,0 (700) 124,0 (1 240) 84,0 (840)10 62,8 (628) 112,0 (1 120) 84,0 (840)12,5 56,0 (560) 98,0 (980) 84,0 (840)16 42,0 (420) 77,0 (770) 84,0 (840)19 34
49、,8 (348) 62,8 (628) 84,0 (840)25 28,0 (280) 56,0 (560) 84,0 (840)7.2 Change in lengthWhen tested in accordance with ISO 1402, the change in length of hose at the maximum working pressure (see Table 5) shall not exceed 3 %.Table 5 Maximum working pressureNominal sizeTypeR7 R8 R18MPa (bar) MPa (bar) MPa (bar)3,2 21,0 (210) 42,0 (420) 21,0 (210)5 21,0 (210) 35,0 (350) 21,0 (210)6,3 19,2 (192) 35,0 (350) 21,0 (210)8 17,5 (175) 31,0 (310) 21,0 (210)10 15,7 (157) 28,0 (280) 21,0 (210)12,5 14,0 (140) 24,5 (245
