SIST EN 4557:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Tees nipples, welded end - Inch seriesLuft- und Raumfahrt - Rohrverschraubung 37° mit Kugelbuchse, aus hochwarmfestem Stahl - T-Verschraubungen, zum Anschweißen - Inch-ReiheSérie aérospatiale - Systeme de raccordement sphérique, 37°, en acier résistant a chaud - Mamelons en Té a souder - Série inchAerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Tees nipples, welded end - Inch series49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 4557:2003SIST EN 4557:2004en01-maj-2004SIST EN 4557:2004SLOVENSKI
STANDARD



SIST EN 4557:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4557February 2003ICS 49.080English versionAerospace series - Pipe coupling 37°, spherical, in heat resistingsteel - Tees nipples, welded end - Inch seriesSérie aérospatiale - Système de raccordement sphérique,37°, en acier résistant à chaud - Mamelons en Té à souder- Série inchThis European Standard was approved by CEN on 14 September 2002.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, Slovak Republic, Spain, Sweden, Switzerland andUnited Kingdom.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 4557:2003 ESIST EN 4557:2004



EN 4557:2003 (E)2ContentsForeword.31Scope.32Normative references.33Required characteristics.43.1Configuration – Dimensions – Tolerances – Masses.43.2Materials.44Designation.95Marking.96Technical specification.9SIST EN 4557:2004



EN 4557:2003 (E)3ForewordThis document EN 4557:2003 has been prepared by the European Association of Aerospace Manufacturers(AECMA).After enquiries and votes carried out in accordance with the rules of this Association, this Standard has receivedthe approval of the National Associations and the Official Services of the member countries of AECMA, prior to itspresentation to CEN.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 August 2003, and conflicting national standards shall be withdrawn at the latest byAugust 2003.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 United Kingdom.1 ScopeThis standard specifies the characteristics of welded tees with nipple for inch series pipe couplings, 37°, spherical,in heat resisting steel, for aerospace applications.Nominal pressure: Class D per ISO 67712 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).ISO 3161Aerospace - UNJ threads - General requirements and limit dimensions.ISO 6771Aerospace - Fluid systems and components - Pressure and temperature classifications.EN 2424Aerospace series - Marking of aerospace products.EN 3363Aerospace series - Steel FE-CM38 - Solution treated - Rm ³ 485 MPa - Sand or investment casting1).EN 3468Aerospace series - Steel FE-PA13 - Softened – 500 £ Rm £ 700 MPa - Forgings – De £ 100 mm 1).EN 3487Aerospace series - Steel FE-PA13 - Softened - 500 £ Rm £ 700 MPa - Bars for machining - De £ 100mm 1).
1)Published as AECMA Prestandard at the date of publication of this standardSIST EN 4557:2004



EN 4557:2003 (E)4EN 4549Aerospace series - Pipe coupling in heat resisting steel or in heat resisting nickel alloy - Coupling end,welded - Design configuration - Inch series.EN 4550-1Aerospace series - Pipe couplings, 37°, spherical - Design configuration - Inch series - Part 1 : Malesealing ends.EN 4560Aerospace series - Pipe couplings, 37°, spherical, up to 21 000 kPa - Inch series - Technicalspecification.3 Required characteristics3.1 Configuration – Dimensions – Tolerances – MassesSee Figures 1 to 3 and Tables 1 to 3. Dimensions and tolerances are in millimetres.Table 1CodeWeld end option1Weld end on one s
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