1、December 2014Translation by DIN-Sprachendienst.English price group 11No 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).IC
2、S 23.100.40; 83.140.40; 23.040.70!%O“2274404www.din.deDDIN EN ISO 3949Plastics hoses and hose assemblies Textile-reinforced types for hydraulic applications Specification (ISO 3949:2009);English version EN ISO 3949:2014,English translation of DIN EN ISO 3949:2014-12Kunststoffschluche und -schlauchle
3、itungen Textilverstrkte Typen fr hydraulische Anwendungen Spezifikationen (ISO 3949:2009);Englische Fassung EN ISO 3949:2014,Englische bersetzung von DIN EN ISO 3949:2014-12Tuyaux et flexibles en plastique Types hydrauliques avec armature textile Spcifications (ISO 3949:2009);Version anglaise EN ISO
4、 3949:2014,Traduction anglaise de DIN EN ISO 3949:2014-12SupersedesDIN EN 855:1997-02www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 20 pages11.14 DIN EN ISO 3949:2014-12 2 A comma is used as the decimal marker. National foreword The te
5、xt of ISO 3949:2009 has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” and has been taken over as EN ISO 3949:2014 by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” (Secretariat: BSI, United Kingdom). The responsible German body involved i
6、n its preparation was the DIN-Normenausschuss Kautschuktechnik (DIN Standards Committee Rubber Technology), Working Committee NA 045-02-12 AA Gummi- und Kunst-stoffschluche sowie Schlauchleitungen (Spiegelgremium zu CEN/TC 218; ISO/TC 45/SC 1). This document supersedes DIN EN 855:1997-02. Requiremen
7、ts for hydraulic hoses for underground mining are dealt with in separate standards. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1402 DIN EN ISO 1402 ISO 1817 DIN ISO 1817 ISO 4671 DIN EN ISO 4671 ISO 10619-2 DIN EN ISO 10619-2 ISO 6
8、743-4 DIN EN ISO 6743-4 ISO 6803 DIN EN ISO 6803 ISO 7326:2006 DIN EN ISO 7326:2009 ISO 8330 DIN EN ISO 8330 ISO 8331 DIN EN ISO 8331 Amendments This standard differs from DIN EN 855:1997-02 as follows: a) the number of the standard has been changed; b) hose type R18 has been added; c) Subclause 7.1
9、 “Hydrostatic requirements” and Subclause 7.9 “Fluid resistance” have been revised; d) Clause 8 “Frequency of testing” and Clause 11 “Recommendations for packaging and storage” have been included. Previous editions DIN 24951-2: 1982-04 DIN EN 855: 1997-02 DIN EN ISO 3949:2014-12 3 National Annex NA
10、(informative) Bibliography DIN EN ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testing DIN ISO 1817, Rubber, vulcanized Determination of the effect of liquids DIN EN ISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of the dimensions of hoses and t
11、he lengths of hose assemblies DIN EN ISO 6743-4, Lubricants, industrial oils and related products (class L) Classification Part 4: Family H (Hydraulic systems) DIN EN ISO 6803, Rubber or plastics hoses and hose assemblies Hydraulic-pressure impulse test without flexing DIN EN ISO 7326, Rubber and pl
12、astics hoses Assessment of ozone resistance under static conditions DIN EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary DIN EN ISO 8331, Rubber and plastics hoses and hose assemblies Guidelines for selection, storage, use and maintenance DIN EN ISO 10619-2, Rubber and plastics
13、hoses and tubing Measurement of flexibility and stiffness Part 2: Bending tests at sub-ambient temperatures DIN EN ISO 3949:2014-12 4 This page is intentionally blank EN ISO 3949 July 2014 ICS 23.100.40; 83.140.40 Supersedes EN 855:1996English Version Plastics hoses and hose assemblies - Textile-rei
14、nforced types for hydraulic applications - Specification (ISO 3949:2009) Tuyaux et flexibles en plastique - Types hydrauliques avec armature textile - Spcifications (ISO 3949:2009) Kunststoffschluche und -schlauchleitungen -Textilverstrkte Typen fr hydraulische Anwendungen - Spezifikationen (ISO 394
15、9:2009) This European Standard was approved by CEN on 24 July 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographica
16、l 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 official versions (English, French, German). A version in any other language made by translation under the responsibility o
17、f 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 of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Ma
18、cedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 C
19、EN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3949:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMContents Page Foreword .
20、 3 1 Scope . 4 2 Normative references. 4 3 Terms and definitions 4 4 Classification 5 5 Materials and construction . 5 5.1 Hoses . 5 5.2 Hose assemblies 5 6 Dimensions and tolerances 5 6.1 Diameters 5 6.2 Concentricity 6 7 Physical properties 6 7.1 Hydrostatic requirements 6 7.2 Change in length 8 7
21、.3 Minimum bend radius 8 7.4 Resistance to impulse . 9 7.5 Leakage of hose assemblies . 9 7.6 Cold flexibility . 9 7.7 Ozone resistance 9 7.8 Electrical conductivity . 9 7.9 Fluid resistance 9 7.10 Visual examination . 10 8 Frequency of testing 10 9 Designation . 10 10 Marking 10 10.1 Hoses . 10 10.
22、2 Hose assemblies 11 11 Recommendations for packaging and storage . 11 12 Test certificate 11 Annex A (normative) Type and routine testing of hoses . 12 Annex B (informative) Production testing . 13 Annex C (informative) Recommendations for lengths of supplied hoses and tolerances on lengths of hose
23、 assemblies 14 Annex D (normative) Test method for electrical conductivity 15 Bibliography 16 2DIN EN ISO 3949:2014-12 EN ISO 3949:2014 (E) ForewordThe text of ISO 3949:2009 has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” of the International Organization for Standard
24、ization (ISO) and has been taken over as EN ISO 3949:2014 by Technical Committee CEN/TC 218 “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
25、by endorsement, at the latest by January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. 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 f
26、or identifying any or all such patent rights. This document supersedes EN 855:1996. 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, Croatia, Cyprus, Czech Rep
27、ublic, 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, Sweden, Switzerland, Turkey and the United Kingdom. End
28、orsement notice The text of ISO 3949:2009 has been approved by CEN as EN ISO 3949:2014 without any modification. 3DIN EN ISO 3949:2014-12EN ISO 3949:2014 (E)1 Scope This International Standard specifies requirements for three types of textile-reinforced thermoplastics hose and hose assembly of nomin
29、al size from 3,2 to 25. Each type is divided into two classes dependent on electrical conductivity requirements. They are suitable for use with water-based hydraulic fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from 0 C to +60 C and oil-based hydraulic fluids HH, H
30、L, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from 40 C to +100 C; This International Standard does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies. NOTE Operating temperatures in excess of 100 C may materially reduce the l
31、ife of the hose. 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 references, the latest edition of the referenced document (including any amendments) applies. ISO 1402,
32、 Rubber and plastics hoses and hose assemblies Hydrostatic testing ISO 1817, Rubber, vulcanized Determination of the effect of liquids ISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 4672:1997, Rubber an
33、d plastics hoses Sub-ambient temperature flexibility tests ISO 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 flexing ISO 7326:2006,
34、Rubber and plastics hoses Assessment of ozone resistance under static conditions ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary ISO 8331, Rubber and plastics hoses and hose assemblies Guidelines for selection, storage, use and maintenance 3 Terms and definitions For the purposes
35、of this document, the terms and definitions given in ISO 8330 apply. 4DIN EN ISO 3949:2014-12 EN ISO 3949:2014 (E) 4 Classification Three 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 o
36、ne or more layers of reinforcement, for operation at higher working pressures. c) Type R18: hoses with one or more layers of reinforcement, 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 requi
37、rements. 2) Class 2, “non-conductive” (see 7.8). 5 Materials and construction 5.1 Hoses Hoses shall consist of a seamless thermoplastic lining resistant to hydraulic fluids, with suitable textile yarn reinforcement and a thermoplastic cover resistant to hydraulic fluids, water and the weather. For c
38、lass 2 hoses, the cover shall not be perforated. The cover shall be orange (colour code RAL 2004). 5.2 Hose assemblies Hose assemblies shall only be manufactured with those hose fittings whose functionality confirms to the requirements of 7.1, 7.4, 7.5 and, for class 2 only, 7.8. Follow the manufact
39、urers instructions for proper preparation and fabrication of hose assemblies. 6 Dimensions and tolerances 6.1 Diameters When measured in accordance with ISO 4671, the diameters of the hoses shall conform to the values given in Table 1. 5DIN EN ISO 3949:2014-12EN ISO 3949:2014 (E)Table 1 Dimensions o
40、f hoses Inside diameter mm Maximum outside diameter mm Type R7 Type R8 Type R18 Type R7 Type R8 Type R18Nominal size min. max. min. max. min. max. 3,2 3,4 4,0 3,4 4,0 3,4 4,0 9,5 10,5 9,5 5 4,6 5,4 4,6 5,4 4,6 5,4 11,4 14,6 10,8 6,3 6,2 7,0 6,2 7,0 6,2 7,0 13,7 16,8 13,5 8 7,7 8,5 7,7 8,5 15,6 18,6
41、16,6 10 9,3 10,3 9,3 10,3 9,3 10,3 18,4 20,3 18,4 12,5 12,3 13,5 12,3 13,5 12,3 13,5 22,5 24,6 22,8 16 15,6 16,7 15,6 16,7 15,5 16,8 25,8 29,8 27,2 19 18,6 19,8 18,6 19,8 18,6 19,8 28,6 33,0 31,5 25 25,0 26,4 25,0 26,4 25,0 26,4 34,7 38,6 40,4 6.2 Concentricity When measured in accordance with ISO 4
42、671, the concentricity of hoses shall conform to Table 2. Table 2 Concentricity of hoses Nominal size Maximum variation in wall thickness between inside diameter and outside diameter mm Up to and including 6,3 0,8 Over 6,3 and including 19 1,0 Over 19 1,3 7 Physical properties 7.1 Hydrostatic requir
43、ements When tested in accordance with ISO 1402 at the relevant proof pressure given in Table 3 and the relevant minimum burst pressure given in Table 4, the hoses and hose assemblies shall not leak. 6DIN EN ISO 3949:2014-12 EN ISO 3949:2014 (E) Table 3 Proof pressure Type R7 R8 R18 Nominal size MPa
44、(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 38,5 (385) 70,0 (700) 42,0 (420) 8 35,0 (350) 42,0 (420) 10 31,5 (315) 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 17,5 (175) 31,5 (315) 42,0 (
45、420) 25 14,0 (140) 28,0 (280) 42,0 (420) Table 4 Minimum burst pressure Type R7 R8 R18 Nominal size MPa (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 77,0 (770) 140,0 (1 400) 84,0 (840) 8 70,0 (700) 84,0 (840) 10 63,0 (630) 112,0 (1 120)
46、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 35,0 (350) 63,0 (630) 84,0 (840) 25 28,0 (280) 56,0 (560) 84,0 (840) 7DIN EN ISO 3949:2014-12EN ISO 3949:2014 (E)Table 5 Maximum working pressure Type R7 R8 R18 Nominal size MPa (bar) MPa (bar) MPa (bar) 3,2 21,0
47、 (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) 21,0 (210) 10 15,8 (158) 28,0 (280) 21,0 (210) 12,5 14,0 (140) 24,5 (245) 21,0 (210) 16 10,5 (105) 19,2 (192) 21,0 (210) 19 8,8 (88) 15,8 (158) 21,0 (210) 25 7,0 (70) 14,0 (140) 21,0 (21
48、0) 7.2 Change in length When tested in accordance with ISO 1402, the change in length of hose at the maximum working pressure (see Table 5) shall not exceed 3 %. 7.3 Minimum bend radius Use test pieces having a length at least 4 times the minimum bend radius. Measure the hose outside diameter with v
49、ernier callipers in the straight lay position before bending the hose. Bend the hose through 180 to the minimum bend radius and measure the flatness with the calliper. When bent to the minimum bend radius in Table 6, measured on the inside of the bend, the flatness shall not exceed 10 % of the original outside diameter. Table 6 Minimum bend radius Minimum bend radius mm Type Nominal size R7 and R8 R18 3,2
