EN 10305-5:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Präzisionsstahlrohre - Technische Lieferbedingungen - Teil 5: Geschweißte und maßumgeformte Rohre mit quadratischem oder rechteckigem QuerschnittTubes de précision en acier - Conditions techniques de livraison - Partie 5: Tubes soudés et calibrés de section carrée ou rectangulaireSteel tubes for precision applications - Technical delivery conditions - Part 5: Welded and cold sized square and rectangular tubes77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 10305-5:2003SIST EN 10305-5:2003en01-november-2003SIST EN 10305-5:2003SLOVENSKI
STANDARD



SIST EN 10305-5:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10305-5April 2003ICS 77.140.75English versionSteel tubes for precision applications - Technical deliveryconditions - Part 5: Welded and cold sized square andrectangular tubesTubes de précision en acier - Conditions techniques delivraison - Partie 5: Tubes soudés et calibrés de sectioncarrée ou rectangulairePräzisionsstahlrohre - Technische Lieferbedingungen - Teil5: Geschweißte und maßumgeformte Rohre mitquadratischem oder rechteckigem QuerschnittThis European Standard was approved by CEN on 14 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 10305-5:2003 ESIST EN 10305-5:2003



EN 10305-5:2003 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.54Symbols.55Classification and designation.55.1Classification.55.2Designation.56Information to be supplied by the purchaser.56.1Mandatory information.56.2Options.66.3Example of an order.67Manufacturing process.77.1Steelmaking process.77.2Tube manufacture and delivery conditions.78Requirements.88.1General.88.2Chemical composition.88.3Mechanical properties.98.4Appearance and internal soundness.108.5Dimensions and tolerances.119Inspection.169.1Types of inspection.169.2Inspection documents.169.3Summary of inspection and testing.1710Sampling.1710.1Frequency of tests.1710.2Preparation of samples and test pieces.1711Test methods.1811.1Tensile test.1811.2Dimensional inspection.1811.3Roughness measurement.1811.4Visual examination.1811.5Non-destructive testing.1911.6Retests, sorting and reprocessing.1912Marking.1913Protection and packaging.19Annex A (informative)
List of corresponding former symbols for delivery conditions and national steeldesignations.20Bibliography.21SIST EN 10305-5:2003



EN 10305-5:2003 (E)3ForewordThis document (EN 10305-5:2003) 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 October 2003, and conflicting national standards shall be withdrawn at the latestby October 2003.This European Standard consists of the following parts under the general title Steel tubes for precision applications– Technical delivery conditions:¾ Part 1: Seamless cold drawn tubes¾ Part 2: Welded cold drawn tubes¾ Part 3: Welded cold sized tubes¾ Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems¾ Part 5: Welded and cold sized square and rectangular tubes¾ Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systemsAnnex A is informative.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.SIST EN 10305-5:2003



EN 10305-5:2003 (E)41 ScopeThis part of this European Standard specifies the technical delivery conditions for welded and sized steel tubes ofsquare and rectangular cross section for precision applications.Tubes according to this part of this European Standard are characterised by having precisely defined tolerances ondimension and a specified surface roughness. Typical fields of application are in the vehicle, furniture and generalengineering industries.2 Normative referencesThis European Standard incorporates by dated or undated references, 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 — Part1: Steel names, principal symbols.EN 10027-2, Designation systems for steel — Part2: Numerical system.EN 10052, Vocabulary of heat treatment terms for ferrous products.prEN 101681), Steel products - Inspection documents - List of information and description.EN 10204, Metallic products — Types of inspection documents.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 10246-8, Non-destructive testing of steel tubes - Part 8: Automatic ultrasonic testing of the weld seam ofelectric welded steel tubes for the detection of longitudinal imperfections.EN 10256, Non-destructive testing of steel tubes — Qualification and competence of level 1 and level 2non-destructive testing personnel.CR 10260, Designation system for steel — Additional symbols.prEN 102661), Steel tubes, fittings and structural hollow sections — Definitions and symbols for use in productstandards.EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing(ISO 377:1997).EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels(ISO 2566-1:1984).
1) In preparation, until this document is published as a European Standard a corresponding national standard should be agreedat the time of enquiry and order.SIST EN 10305-5:2003



EN 10305-5:2003 (E)5EN ISO 4287, Geometrical product specifications (GPS) - Surface texture: Profile method - Terms, definitions andsurface texture parameters (ISO 4287:1997).3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply in addition to the terms anddefinitions in EN 10020, EN 10021, EN 10052 and prEN 10266.3.1employerorganization 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.3.2parent coilcoil originating from the hot rolling process prior to any further operation (pickling, slitting, cold rolling or coating)4 SymbolsSee prEN 10266.5 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;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.NOTEA list of corresponding former national designations (of similar steel grades) is given in Table A.1.6 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 of pieces);b) the term "tube“;c) the dimensions (see 8.5);SIST EN 10305-5:2003



EN 10305-5:2003 (E)6d) the designation of the steel grade in accordance with
this part of this European Standard (see 5.2);e) the delivery condition including the surface condition (see 7.2.1 and 7.2.2).6.2 OptionsA number of options are specified in this part of this European Standard and these are listed below. In the eventthat the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, thetubes shall be supplied in accordance with the basic specification (see 6.1).1) suitability for hot dip galvanizing (see 7.2.1);2) specification of a steel grade not specified in this part of this European Standard (see 8.2);3) surface condition for further processing (see 8.4.1.1);4) position of the weld line (see 8.4.1.5);5) removal of internal weld bead (see 8.4.1.6);6) measurement of surface roughness (see 8.4.1.7);7) lower surface roughness (see 8.4.1.7);8) non-destructive testing of the weld seam for the detection of longitudinal imperfections (see 8.4.2);9) reduced wall thickness tolerance (see 8.5.3);10) wall thickness tolerance unilateral (see 8.5.3);11) exact length (see 8.5.5);12) another specified length and/or tolerance (see 8.5.5);13) special end finishing (see 8.5.10);14) specific inspection (see 9.1);15) test unit with tubes from one cast only (see 10.1.1);16) alternative marking (see clause 12);17) delivery without corrosion protection (see clause 13);18) specified corrosion protection (see clause 13);19) specified method of packaging (see clause 13).6.3 Example of an order12 000 m tube, size 50 mm ´ 30 mm with a wall thickness of 3 mm in accordance with EN 10305-5, made of steelgrade E235 in the normalized condition with strip surface condition S2 (pickled) with a 3.1.B inspection certificate inaccordance with EN 10204:12 000 m tube – 50 ´ 30 ´ 3 - EN 10305-5 - E235+N - S2 - Option 14.SIST EN 10305-5:2003



EN 10305-5:2003 (E)77 Manufacturing process7.1 Steelmaking processThe steels shall be produced by the electric process or by one of the basic oxygen processes. The process is at thediscretion of the manufacturer.Steels shall be fully killed.7.2 Tube manufacture and delivery conditions7.2.1The tubes shall be manufactured from steel strip by electric welding. The tubes shall not include weldsused for joining lengths of flat rolled strip prior to forming the tube.Possible surface conditions are:— S1 (black);— S2 (pickled);— S3 (cold rolled);— S4 (coated to an agreed condition).NOTEThe surface conditions S1 and S3 apply for the strip. The surface condition S2 and S4 can apply for thestrip or the tube ; the purchaser should, where necessary, indicate the required condition at the time of enquiry andorder.Option 1:The tubes shall be suitable for hot dip galvanizing.7.2.2Tubes made of the steel grades E155, E195, E235, E275 and E355 shall be supplied in one of the deliveryconditions given in Table 1, except +CR2. Tubes made of the grades E190, E220, E260, E320, E370 and E420shall be supplied in the delivery condition +CR2.7.2.3All non-destructive testing (NDT) activities shall be carried out by qualified and competent level 1, 2 and/or3 personnel authorised 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 operation authorisation issued by the employer shall be in accordance with a written procedure. NDToperations shall be authorised 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 conditionsDesignationSymbol aDescription+CR1 bNormally not heat treated, but suitable for final annealing.Welded and coldsized+CR2 cNot intended for heat treatment after the welding andsizing process.Annealed+AAfter the welding and sizing process the tubes areannealed in a controlled atmosphere.Normalized+NAfter the welding and sizing process the tubes arenormalized in a controlled atmosphere. This deliverycondition can be reached via direct processing.aFormer frequently used corresponding heat treatment symbols are given in Table A.1.bNOTE 1
After annealing or normalizing, the mechanical properties given in Table 4 for the delivery condition +A or +N,respectively are normally obtained.cNOTE 2
If further heat treatment is applied, the resulting mechanical properties may be outside the specified requirements.SIST EN 10305-5:2003



EN 10305-5:2003 (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 2).Option 2: A steel grade not specified in this part of EN 10305 with a maximum total content of alloyingelements of 5% is specified. Chemical composition, mechanical properties and delivery condition are specified bythe purchaser.NOTE 1Precautions regarding the silicon content should be taken if option 1 is specified.NOTE 2When subsequently welding tubes produced according to this part of EN 10305, account should be taken of the factthat the behaviour of the steel during and after welding is dependent not only on the steel, but also on th
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