EN 10305-2:2002
(Main)Steel tubes for precision applications - Technical delivery conditions - Part 2: Welded cold drawn tubes
Steel tubes for precision applications - Technical delivery conditions - Part 2: Welded cold drawn tubes
This Part of this European Standard specifies the technical delivery conditions for welded cold drawn steel tubes of circular cross section for precision application.
NOTE This Part of this European Standard may also be applicable to other types of cross section.
Tubes according to this Part of this European Standard are characterized by having precisely defined tolerances on dimensions and a specified surface roughness. Typical fields of application are in the vehicle, furniture and general engineering industries.
Präzisionsstahlrohre - Technische Lieferbedingungen - Teil 2: Geschweißte kaltgezogene Rohre
Dieser Teil der EN 10xyz enthält die technischen Lieferbedingungen für geschweißte kaltgezogene Präzisionsrohre mit kreisförmigem Querschnitt aus Stählen nach Tabelle 2. Rohre nach diesem Teil der EN 10xyz sind durch genau definierte Grenzabmaße und eine festgelegte Oberflächenrauheit charakterisiert.
Tubes de précision en acier - Conditions techniques de livraison - Partie 2: Tubes soudés étirés à froid
La présente partie de l'EN 10305 spécifie les conditions techniques de livraison pour les tubes en acier soudés étirés à froid, de section circulaire, destinés aux applications de précision.
NOTE La présente partie de l'EN 10305 peut aussi s'appliquer à d'autres types de section.
Les tubes conformes à la présente partie de l'EN 10305 se caractérisent par des tolérances dimensionnelles précises et par une rugosité spécifiée. Les domaines typiques d'application sont l'automobile, le mobilier et les industries de construction mécanique.
Jeklene cevi za precizno uporabo - Tehnični dobavni pogoji - 2. del: Varjene hladno vlečene cevi
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Präzisionsstahlrohre - Technische Lieferbedingungen - Teil 2: Geschweißte kaltgezogene RohreTubes de précision en acier - Conditions techniques de livraison - Partie 2: Tubes soudés étirés a froidSteel tubes for precision applications - Technical delivery conditions - Part 2: Welded cold drawn tubes77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 10305-2:2002SIST EN 10305-2:2003en01-april-2003SIST EN 10305-2:2003SLOVENSKI
STANDARD
SIST EN 10305-2:2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10305-2November 2002ICS 77.140.75English versionSteel tubes for precision applications - Technical deliveryconditions - Part 2: Welded cold drawn tubesTubes de précision en acier - Conditions techniques delivraison - Partie 2: Tubes soudés étirés à froidPräzisionsstahlrohre - Technische Lieferbedingungen - Teil2: Geschweißte kaltgezogene RohreThis European Standard was approved by CEN on 2 October 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,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10305-2:2002 ESIST EN 10305-2:2003
EN 10305-2:2002 (E)2ContentsForeword.31Scope.42Normative references.43Terms and definitions.54Symbols.55Classification and designation.55.1Classification.55.2Designation.56Information to be supplied by the purchaser.66.1Mandatory information.66.2Options.66.3Example of an order.77Manufacturing process.77.1Steelmaking process.77.2Tube manufacture and delivery condition.78Requirements.88.1General.88.2Chemical composition.88.3Mechanical properties.98.4Appearance and internal soundness.108.5Dimensions and tolerances.109Inspection.149.1Types of inspection.149.2Inspection documents.159.3Summary of inspection and testing.1510Sampling.1610.1Test unit.1610.2Preparation of samples and test pieces.1611Test methods.1711.1Tensile test.1711.2Flattening test.1711.3Drift expanding test.1811.4Dimensional inspection.1811.5Roughness measurement.1811.6Visual examination.1811.7Non-destructive testing.1811.8Retests, sorting and reprocessing.1912Marking.1913Protection and packaging.19Annex A (informative)
List of corresponding former symbols for delivery conditions and nationalsteel designations.20Bibliography.21SIST EN 10305-2:2003
EN 10305-2:2002 (E)3ForewordThis document EN 10305-2:2002 has been prepared by Technical Committee ECISS /TC 29, "Steel tubes andfittings for steel tubes" the secretariat of which is held by UNI.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 May 2003, and conflicting national standards shall be withdrawn at the latest byMay 2003.EN 10305 consists of the following Parts under the general title “Steel tubes for precision applications - Technicaldelivery conditions”:¾ Part 1: Seamless cold drawn tubes.¾ Part 2: Welded cold drawn tubes.¾ Part 3: Welded cold sized tubes.¾ Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems.¾ Part 5: Welded and cold sized square and rectangular tubes.¾ Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systems.In this European Standard the annex A is informative.This document includes a Bibliography.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, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.SIST EN 10305-2:2003
EN 10305-2:2002 (E)41 ScopeThis Part of EN 10305 specifies the technical delivery conditions for welded cold drawn steel tubes of circular crosssection for precision application.NOTEThis Part of EN 10305 may also be applicable to other types of cross section.Tubes according to this Part of EN 10305 are characterized by having precisely defined tolerances on dimensionsand a specified surface roughness. Typical fields of application are in the vehicle, furniture and general engineeringindustries.2 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 10002-1, Metallic materials — Tensile testing — Part 1 : Method of test at ambient temperature.EN 10020, Definition and classification of grades of steel.EN 10021, General technical delivery requirements for steel and iron products.EN 10027-1, Designation systems for steel — Part 1 : Steel names, principal symbols.EN 10027-2, Designation systems for steels — Part 2 : Numerical system.EN 10052, Vocabulary of heat treatment terms for ferrous products.EN 10204, Metallic products — Types of inspection documents.EN 10233, Metallic materials — Tube — Flattening test.EN 10234, Metallic materials — Tube — Drift expanding test.EN 10246-1, Non-destructive testing of steel tubes — Part 1 : Automatic electromagnetic testing of seamless andwelded (except submerged arc-welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness.EN 10246-3, Non-destructive testing of steel tubes — Part 3 : Automatic eddy current testing of seamless andwelded (except submerged arc-welded) steel tubes for the detection of imperfections.EN 10246-5, Non-destructive testing of steel tubes — Part 5 : Automatic full peripheral magnetic transducer/fluxleakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for thedetection of longitudinal imperfections.EN 10246-7, Non-destructive testing of steel tubes — Part 7 : Automatic full peripheral ultrasonic testing ofseamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal imperfections.EN 10256, Non-destructive testing of steel tubes — Qualification and competence of level 1 and 2non-destructive testing personnel.EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanicaltesting (ISO 377:1997).EN ISO 2566-1, Steel — Conversion of elongation values — Part 1 : Carbon and low alloy steels(ISO 2566-1:1984).SIST EN 10305-2:2003
EN 10305-2:2002 (E)5prEN 101681), Iron and steel products — Inspection documents — List of information and description.ENV 10220, Seamless and welded steel tubes — Dimensions and masses per unit length.prEN 102661), Steel tubes, fittings and structural hollow sections — Definitions and symbols for use in productstandards.EN ISO 4287, Geometrical product specifications (GPS) - Surface texture: Profile method - Terms, definitions andsurface texture parameters (ISO 4287:1997).CR 10260, Designation systems for steel — Additional symbols.3 Terms and definitionsFor the purposes of this European Standard the terms and definitions given in EN 10020, EN 10021, EN 10052,prEN 10266 and the following apply.3.1employerorganization for which a person works on a regular basisNOTEThe employer can be either the tube manufacturer or a third party organization providing non-destructive testing(NDT) services.4 SymbolsSee prEN 10266.NOTEIn this Part of EN 10305 "T" is the specified or the calculated wall thickness.5 Classification and designation5.1 ClassificationIn accordance with the classification system in EN 10020 the steel grades given in Table 2 are non-alloy qualitysteels.5.2 DesignationFor the tubes covered by this Part of EN 10305 the steel designation consists of :¾ the number of this Part of EN 10305; EN 10305-2;plus either:¾ the steel name in accordance with EN 10027-1 and CR 10260 ; or¾ the steel number in accordance with EN 10027-2.
1)In preparation, until this document is published as a European Standard a corresponding national standard should beagreed at the time of enquiry and order.SIST EN 10305-2:2003
EN 10305-2:2002 (E)66 Information to be supplied by the purchaser6.1 Mandatory informationThe following information shall be supplied by the purchaser at the time of enquiry and order:a) the quantity (mass or total length or number);b) the term "tube";c) the dimensions (see 8.5);d) the designation of the steel grade in accordance with this Part of EN 10305 (see 5.2);e) the delivery condition including the surface condition (see 7.2.1 and 7.2.2);f) the type of tube length and, where applicable, the length (see 8.5.2).6.2 OptionsA number of options are specified in this Part of EN 10305 and these are listed below. In the event that thepurchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the tubesshall be supplied in accordance with the basic specification (see 6.1):1) specification of a steel grade not specified in this Part of EN 10305 (see 8.2);2) surface condition for further processing (see 8.4.1.1);3) measurement of surface roughness (see 8.4.1.5);4) lower surface roughness (see 8.4.1.5);5) defined removable substances on surface (see 8.4.1.6);6) non-destructive testing for the detection of longitudinal imperfections (see 8.4.2);7) non-destructive testing for verification of leak tightness (see 8.4.2);8) tubes specified by outside or inside diameter and wall thickness (see 8.5.1.1);9) agreement on a cross section other than circular (see 8.5.1.1);10) reduced diameter tolerances (see 8.5.1.2);11) diameter tolerances unilateral (see 8.5.1.2);12) reduced wall thickness tolerance (see 8.5.1.3);13) wall thickness tolerances unilateral (see 8.5.1.3);14) agreement on a tolerance for exact lengths £ 500 mm or > 8000 mm (see Table 7);15) special end finishing (see 8.5.4);16) specific inspection (see 9.1);17) inspection certificates 3.1.A or 3.1.C (see 9.2.1);18) flattening or drift expanding test (see Table 8);SIST EN 10305-2:2003
EN 10305-2:2002 (E)719) test unit with tubes from one cast only (see 10.1);20) alternative marking (see clause 12);21) delivery without corrosion protection (see clause 13);22) specified corrosion protection (see clause 13);23) specified method of packaging (see clause 13).6.3 Example of an order12 000 m tube with an outside diameter of 60 mm and an inside diameter of 56 mm in accordance with this Part ofEN 10305, made of steel grade E235 in the normalized condition, delivered in random lengths, with a 3.1.Binspection certificate in accordance with EN 10204 :12 000 m tube - 60 x ID 56 - EN 10305-2 - E235 +N - random length – Option 167 Manufacturing process7.1 Steelmaking processThe steelmaking process is at the discretion of the manufacturer.Steels shall be fully killed.7.2 Tube manufacture and delivery condition7.2.1The tubes shall be manufactured from electric welded pre-tubes by cold drawing or other suitableprocesses. The tubes shall not include welds used for joining lengths of flat rolled strip prior to forming the pre-tube.7.2.2The tubes shall be supplied in one of the delivery conditions given in Table 1.7.2.3All non-destructive testing (NDT) activities shall be carried out by qualified and competent level 1, 2 and/or3 personnel authorized to operate by the employer.The qualification shall be in accordance with EN 10256 or, at least, an equivalent to it.It is recommended that the level 3 personnel be certified in accordance with EN 473 or, at least, an equivalent to it.The operating authorization issued by the employer shall be in accordance with a written procedure.NDT operations shall be authorized by a level 3 NDT individual approved by the employer.NOTEThe definition of level 1, 2 and 3 can be found in appropriate standards, e.g. EN 473 and EN 10256.Table 1 — Delivery conditionsDesignationSymbolaDescriptionCold drawn / hard+CNo heat treatment after the final cold drawing process.Cold drawn / soft+LCAfter the final heat treatment there is a suitable drawing pass.Cold drawn andstress relieved+SRAfter the final cold drawing process there is a stress relieve heat treatment in a controlledatmosphere.Annealed+AAfter the final cold drawing process the tubes are annealed in a controlled atmosphere.Normalized+NAfter the final cold drawing operation the tubes are normalized in a controlled atmosphere.a Former frequently used corresponding heat treatment symbols are given in Table A.1.SIST EN 10305-2:2003
EN 10305-2:2002 (E)88 Requirements8.1 GeneralThe tubes, when supplied in a delivery condition indicated in Table 1 and inspected in accordance with clauses 9,10 and 11, shall comply with the requirements of this Part of EN 10305.In addition, the general technical delivery requirements specified in EN 10021 shall apply.8.2 Chemical compositionThe cast analysis reported by the steel producer shall apply and comply with the requirements of Table 2. A steelgrade not specified in this Part of EN 10305 may be specified (see Option 1).Option 1: A steel grade not specified in this Part of EN 10305 with a maximum total content of alloying elements of5 % is specified. Chemical composition, mechanical properties and delivery condition are specified by thepurchaser.NOTEWhen subsequently welding tubes are produced in accordance with this Part of EN 10305, account should be takenof the fact that the behaviour of the steel during and after welding is dependent not only on the steel and the delivery condition,but also on the conditions of preparing for and carrying out the welding.Table 2 — Chemical composition (cast analysis) aSteel grade% by massSteel nameSteelnumberCmax.Simax.Mnmax.Pmax.Smax.E1551.00330,110,350,700,0250,025E1951.00340,150,350,700,0250,025E2351.03080,170,351,200,0250,025E2751.02250,210,351,400,0250,025E355 b1.05800,220,551,600,0250,025a Elements not included in this Table (but see footnote b) shall not be intentionally added to the steel withoutthe agreement of the purchaser, except for elements which may be added for finishing the cast. All appropriatemeasures shall be taken to prevent the addition of undesirable elements from scrap or other materials used inthe steel making process.b Additions of Nb, Ti and V are permitted at the discretion of the manufacturer. The content of these elementsshall be reported.Table 3 specifies the limit deviations of product analysis from the specified limits on cast analysis given in Table 2.SIST EN 10305-2:2003
EN 10305-2:2002 (E)9Table 3 — Permissible deviations of the product analysis from the specified limits on cast analysis given inTable 2ElementLimiting value for cast analysisin accordance with Table 2 in %by massPermissible deviation of theproduct analysis in % by massC£ 0,22+ 0,02Si£ 0,55+ 0,05Mn£ 1,60+ 0,10P£ 0,025+ 0,005S£ 0,025+ 0,0058.3 Mechanical propertiesThe mechanical properties of the tubes shall conform to the requirements of Table 4 and, if applicable, 11.2 or11.3.NOTESubsequent processing (cold or hot) may change the mechanical properties.Table 4 — Mechanical properties at room temperatureSteel gradeMinimum values for the delivery condition a b+C c+LC c+S
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