EN 559:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Oprema za plamensko varjenje - Gumene cevi za varjenje, rezanje in sorodne postopkeGasschweißgeräte - Gummischläuche für Schweißen, Schneiden und verwandte ProzesseMatériel de soudage aux gaz - Tuyaux souples en caoutchouc pour le soudage, le coupage et les techniques connexesGas welding equipment - Rubber hoses for welding, cutting and allied processes83.140.40Gumene ceviHoses25.160.30Varilna opremaWelding equipmentICS:Ta slovenski standard je istoveten z:EN 559:2003SIST EN 559:2003en01-december-2003SIST EN 559:2003SLOVENSKI
STANDARDSIST EN 559:19971DGRPHãþD



SIST EN 559:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 559April 2003ICS 23.040.70Supersedes EN 559:1994English versionGas welding equipment - Rubber hoses for welding, cutting andallied processesMatériel de soudage aux gaz - Tuyaux souples encaoutchouc pour le soudage, le coupage et les techniquesconnexesGasschweißgeräte - Gummischläuche für Schweißen,Schneiden und verwandte ProzesseThis European Standard was approved by CEN on 28 February 2003.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 references concerning such nationalstandards may be obtained on application to the 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 its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 559:2003 ESIST EN 559:2003



EN 559:2003 (E)2ContentsForeword.31Scope.32Normative references.43Terms and definitions.44Abbreviation.55Application.56Hose designation.57Materials.57.1Construction.57.2Manufacture.68Dimensions and tolerances.68.1Internal diameter.68.2Concentricity (total indicator reading).68.3Cut lengths and tolerances.69Requirements and tests.79.1Basic requirements.79.2Special requirements.810Hose colour and gas identification.1010.1General.1010.2Gas identification.1010.3Marking.10Annex A (normative)
Method of test for non-ignition.11A.1Apparatus.11A.2Procedure.11Annex B (normative)
Method of test for resistance to n-pentane.13Annex C (normative)
Method of test for resistance to incandescent particles and hot surfaces.14Annex D (normative)
Summary of requirements and tests for type approval.16Bibliography.17SIST EN 559:2003



EN 559:2003 (E)3ForewordThis document (EN 559:2003) has been prepared by Technical Committee CEN/TC 121, "Welding", the secretariatof which is held by DS.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latestby October 2003.This document supersedes EN 559:1994.Annexes A, B, C and D are normative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.1 ScopeThis European Standard specifies requirements for rubber hoses, including twin hoses and fluxed fuel gas hoses forwelding, cutting and allied processes. The term "allied processes" means, in particular, heating, brazing andmetallization.This standard specifies requirements for rubber hoses for normal duty up to 2 MPa (20 bar) and light duty [limited tohoses for maximum operating pressure up to 1 MPa (10 bar) and with nominal bore less than or equal to 6,3 mm].This standard pertains to hoses operated at temperatures - 20 °C to + 60 °C.Thermoplastic hoses specified in EN 1327 are excluded from this standard.Different colours and markings are specified for identification of the gas.NOTEIf hoses for liquefied petrol gases are used without regulators the use of light duty rubber hoses is not allowed.This standard applies to hoses used in:¾ gas welding and cutting;¾ arc welding under the protection of an inert or active gas;¾ processes allied to welding and cutting;and assembled according to EN 1256.Hose connections for the manufacture of hose lines see EN 560.This standard does not apply to hoses used for high pressure acetylene [more than 0,15 MPa (1,5 bar)].SIST EN 559:2003



EN 559:2003 (E)42 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 1256, Gas welding equipment — Specification for hose assemblies for equipment for welding, cutting and alliedprocesses.EN 1327, Gas welding equipment — Thermoplastic hoses for welding and allied processes.EN ISO 1307:1995, Rubber and plastics hoses for general-purpose industrial applications - Bore diameters andtolerances, and tolerances on length (ISO 1307:1992).EN ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing (ISO 1402: 1994).EN ISO 1746, Rubber or plastics hoses and tubing - Bending tests (ISO 1746:1998, including technicalcorrigendum 1:1999).EN ISO 4080, Rubber and plastic hoses and hose assemblies — Determination of permeability to gas(ISO 4080: 1991).EN ISO 4671, Rubber and plastics hose and hose assemblies — Methods of measurement of dimensions(ISO 4671:1999).EN ISO 4672:1999, Rubber and plastics hoses — Sub-ambient temperature flexibility tests (ISO 4672:1997).EN ISO 8330:2000, Rubber and plastics hoses and hose assemblies - Vocabulary (ISO 8330:1998).EN 27326:1993, Rubber and plastics hoses — Assessment of ozone resistance under static conditions(ISO 7326:1991).EN 28033:1993, Rubber and plastics hose — Determination of adhesion between components (ISO 8033:1991).EN ISO 11114-3, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas contents —Part 3: Autogenous ignition test in oxygen atmosphere (ISO 11114-3:1997).ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties.ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing or heat-resistance tests.ISO 471, Rubber — Temperatures, humidities and times for conditioning and testing.ISO 1817, Rubber, vulcanized — Determination of the effect of liquids.3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN ISO 8330:2000 and thefollowing apply.3.1twin hosestwo normal rubber hoses joined together longitudinally3.2all fuel gas hoseshoses which can be used for all the fuel gases given in Table 4 except fluxed fuel gasSIST EN 559:2003



EN 559:2003 (E)53.3fluxed fuel gas hosesfuel gas hose for use with liquid flux dispenser fitted in the fuel gas supply line4 Abbreviated termsFor the purposes of this European Standard, the following abbreviated terms apply.LPGLiquefied petroleum gasesMPSMethylacetylene-propadiene-mixtures5 ApplicationHoses shall only be used for the relevant type of gas for which the colour code is specified (see Table 4).6 Hose designationThe hoses covered by this standard are designated using the following information:¾ nominal bore, see Table 1;¾ light or normal duty (pressure rating), see Table 3;¾ colour and marking (gas service), see Table 4.EXAMPLE 16,3 mm, light duty, blue.EXAMPLE 210 mm, normal duty, red.EXAMPLE 36,3 mm, light duty, red-FLUX.7 Materials7.1 Construction7.1.1 GeneralThe hose shall consist of:¾ a rubber lining of a minimum thickness of 1,5 mm;¾ reinforcement applied by any suitable technique;¾ a rubber cover of a minimum thickness of 1,0 mm.7.1.2 Fluxed fuel gas hoseThe fluxed fuel gas hose shall consist of:¾ a rubber lining with an additional inner plastic layer to give a minimum total thickness of 1,5 mm. The innerplastic layer shall be a maximum thickness of 0,5 mm;¾ reinforcement applied by any suitable technique;SIST EN 559:2003



EN 559:2003 (E)6¾ a rubber cover of a minimum thickness of 1,0 mm.7.1.3 Twin hoseEach hose used for twin hose construction shall be as detailed in 7.1.1 or 7.1.2. The two hoses shall be joinedlongitudinally during the extrusion and/or vulcanisation process. They shall be capable of being separated free ofdamage to enable end fittings to be fitted (see 9.2.7).7.2 ManufactureThe lining and cover shall be of uniform thickness and free from holes, porosity and other defects.8 Dimensions and tolerances8.1 Internal diameterThe internal diameter of the hoses shall be in accordance with the dimensions and tolerances shown in Table 1.Table 1 — Nominal bore, tolerances and concentricityNominal boreInternal diametermmTolerancemmConcentricity max.mm44556,36,3± 0,40881010± 0,5012,512,51616120202525± 0,603232± 1,01,2540405050± 1,251,50NOTE 1The tolerances and internal diameters (excluding nominal bore of 20 mm) do not complywith Table 1 of EN ISO 1307:1995.NOTE 2For intermediate dimensions, numbers should be chosen from the R20 series ofpreferred numbers with tolerances as for the next larger internal diameter shown in Table 1.8.2 Concentricity (total indicator reading)The concentricity of the hose, measured in accordance with EN ISO 4671, shall be in accordance with the valuesgiven in Table 1.8.3 Cut lengths and tolerancesThe tolerances for cut lengths shall be in accordance with EN ISO 1307.SIST EN 559:2003



EN 559:2003 (E)79 Requirements and testsNOTEThe list of tests with the corresponding number of samples are detailed in annex D.9.1 Basic requirements9.1.1 Tensile strength and elongation at breakMeasurements shall be made on test specimens cut from the hoses. The materials used in the lining and covershall, when tested in accordance with ISO 37, have a tensile strength and elongation at break not less than thevalues given in Table 2.Table 2 — Tensile strength and elongation at breakRatingTensile strengthN/mm²Elongation at break%rubber lining5200cover7250inner plastic layer51209.1.2 Accelerating ageingMeasurements shall be made on test specimens cut from the hoses. After ageing for seven days at a temperatureof 70 °C as described in ISO 188, (air oven) the tensile strength and elongation at break respectively of the liningand cover shall not decrease from the original values obtained by more than 25 % for the tensile strength and 50 %for elongation at break.9.1.3 AdhesionWhen tested in accordance with EN 28033:1993 using the type 2 or type 4 test piece, the minimum adhesionbetween adjacent components shall be 1,5 kN/m. For fluxed fuel gas hoses see 9.2.4. For fluxed fuel gas hos
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