Non-alloy steel tubes and fittings for the conveyance of aqueous liquids including water for human consumption - Technical delivery conditions

1.1 This European standard specifies requirements for the products listed below for the conveyance of aqueous liquids, including water for human consumption: - seamless and welded non-alloy steel tubes; - end preparation of tube ends for butt welding; - fittings fabricated from the tube; - fittings fabricated from plate or strip. 1.2 This European standard covers a range of tube outside diameters from 26,9 mm to 2 743 mm.

Rohre und Fittings aus unlegierten Stählen für den Transport wässriger Flüssigkeiten einschließlich Trinkwasser - Technische Lieferbedingungen

Diese Europäische Norm legt die Anforderungen an die nachstehend aufgeführten Erzeugnisse für den Transport wässriger Flüssigkeiten einschließlich Trinkwasser fest:
3 nahtlose und geschweißte Rohre aus unlegiertem Stahl;
3 Rohrendenvorbereitung zum Stumpfschweißen;
3 Fittings, gefertigt aus Rohren;
3 Fittings, gefertigt aus Blech oder Band.
ANMERKUNG      Diese Europäische Norm enthält informative Anhänge, in denen Hinweise auf die dem jeweiligen Herstell-verfahren entsprechenden Abmessungsbereiche der Rohre, auf die Beziehungen zwischen Nenn-außen-durchmesser (D) und Nennweite (DN), über Verbindungsarten - soweit sie nicht durch Stumpfschweißen erzeugt werden - und zum Korrosionsschutz gegeben werden.
Diese Europäische Norm gilt für Rohre mit einem Außendurchmesser von 26,9 mm bis 2743 mm.

Tubes et raccords en acier non allié pour le transport de liquides aqueux, incluant l'eau destinée a la consommation - Conditions techniques de livraison

1.1   La présente Norme européenne spécifie les prescriptions pour les produits listés ci-dessous, utilisés pour le transport de liquides aqueux, y compris l'eau destinée a la consommation humaine :
3 tubes soudés et sans soudure en acier non allié ;
3 préparation des extrémités de tubes pour la soudure par raboutage ;
3 raccords réalisés a partir du tube ;
3 raccords réalisés a partir de tôle ou bande.
NOTE   La présente Norme européenne comporte des annexes informatives qui donnent des indications sur les dimensions de tube relatives a chaque procédé de fabrication couvert, la relation entre le diametre extérieur nominal (D) et le diametre nominal (DN) pour les assemblages autres que la soudure de raboutage, et sur la protection anticorrosion.
1.2   La présente Norme européenne couvre une plage de diametre extérieur de tube compris entre 26,9 mm et 2 743 mm.

Nelegirane jeklene cevi in fitingi za transport vodnih tekočin vključno s pitno vodo - Tehnični dobavni pogoji

General Information

Status
Published
Publication Date
31-Mar-2003
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Apr-2003
Due Date
01-Apr-2003
Completion Date
01-Apr-2003

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Non-alloy steel tubes and fittings for the conveyance of aqueous liquids including water for human consumption - Technical delivery conditionsTubes et raccords en acier non allié pour le transport de liquides aqueux, incluant l'eau destinée a la consommation - Conditions techniques de livraisonRohre und Fittings aus unlegierten Stählen für den Transport wässriger Flüssigkeiten einschließlich Trinkwasser - Technische LieferbedingungenTa slovenski standard je istoveten z:EN 10224:2002SIST EN 10224:2003en23.040.4023.040.10ICS:SLOVENSKI

STANDARDSIST EN 10224:200301-april-2003

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10224December 2002ICS 23.040.10; 23.040.40English versionNon-alloy steel tubes and fittings for the conveyance of aqueousliquids including water for human consumption - Technicaldelivery conditionsTubes et raccords en acier non allié pour le transport deliquides aqueux, incluant l'eau destinée à la consommation- Conditions techniques de livraisonRohre und Fittings aus unlegierten Stählen für denTransport wässriger Flüssigkeiten einschließlichTrinkwasser - Technische LieferbedingungenThis European Standard was approved by CEN on 19 August 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 10224:2002 E

EN 10224:2002 (E)2ContentsForeword......................................................................................................................................................4Introduction.................................................................................................................................................51Scope...............................................................................................................................................52Normative references.....................................................................................................................53Terms, definitions and symbols...................................................................................................74Classification and designation.....................................................................................................74.1Classification..................................................................................................................................74.2Designation.....................................................................................................................................75Information to be supplied by the purchaser..............................................................................85.1Mandatory information..................................................................................................................85.2Options............................................................................................................................................85.3Examples of an order.....................................................................................................................96Manufacturing process..................................................................................................................96.1Steel manufacturing process........................................................................................................96.2Deoxidation process......................................................................................................................96.3Product manufacture and delivery conditions............................................................................97Requirements...............................................................................................................................117.1General..........................................................................................................................................117.2Chemical composition.................................................................................................................117.3Mechanical properties.................................................................................................................127.4Appearance...................................................................................................................................147.5Soundness....................................................................................................................................157.6Dimensions of tubes....................................................................................................................157.7Tolerances for tubes....................................................................................................................177.8Types and dimensions of fittings...............................................................................................207.9Tolerances for fittings..................................................................................................................257.10End preparation of tubes and fittings for butt welding............................................................267.11Reaction to fire.............................................................................................................................288Inspection.....................................................................................................................................288.1General..........................................................................................................................................288.2Inspection documents.................................................................................................................288.3Content of inspection document................................................................................................298.4Summary of inspection and testing...........................................................................................309Sampling of tubes and fittings....................................................................................................329.1Frequency of testing....................................................................................................................329.2Location, orientation and preparation of samples and test pieces........................................3310Test methods................................................................................................................................3510.1Chemical analysis........................................................................................................................3510.2Mechanical tests...........................................................................................................................3510.3Leak tightness test.......................................................................................................................3610.4Non-destructive test of the seam weld of welded tubes..........................................................3610.5Non destructive testing of the welds of fittings........................................................................3710.6Visual examination.......................................................................................................................3710.7Dimensional inspection...............................................................................................................3711Retests, sorting and reprocessing.............................................................................................38

EN 10224:2002 (E)312Marking..........................................................................................................................................3813Protective coating or lining.........................................................................................................38Annex A (informative)

Size range of tube manufacturing processes..................................................39Annex B (informative)

Relationship between outside diameter and nominal size (DN).....................40Annex C (informative)

Jointing.................................................................................................................41C.1General..........................................................................................................................................41C.2Sleeve joints for welding.............................................................................................................41C.3Flange joints.................................................................................................................................42C.4Slip-on type couplings.................................................................................................................42C.5Push fit and gasket type couplings............................................................................................47C.6Special joints................................................................................................................................48Annex D (informative)

Coatings and linings...........................................................................................49D.1General..........................................................................................................................................49D.2Coatings........................................................................................................................................49D.3Linings...........................................................................................................................................49D.4Relevant European Standards, published or under development..........................................50Annex ZA (informative) Clauses of this European Standard addressing the provisions ofthe EU Construction Products Directive...................................................................................51Bibliography..............................................................................................................................................58

EN 10224:2002 (E)4ForewordThis document EN 10224:2002 has been prepared by Technical Committee ECISS/TC 29, "Steeltubes and fittings 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 anidentical text or by endorsement, at the latest by June 2003, and conflicting national standards shallbe withdrawn at the latest by September 2004.This document has been prepared under a mandate given to CEN by the European Commission andthe European Free Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative annex ZA, which is an integral part of thisdocument.Annexes A to D are informative.This document includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard : Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta,Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

EN 10224:2002 (E)5IntroductionThis European Standard applies to tubular products for use with all types of aqueous liquids.In respect of potential adverse effects on the quality of water intended for human consumption,caused by the product covered by this standard:a) This standard provides no information as to whether the product may be used without restrictionin any of the Member States of the EU or EFTA;b) It should be noted that, while awaiting the adoption of verifiable European criteria, existingnational regulations concerning the use and/or the characteristics of this product remain in force.In addition to the requirements for the manufacture of tubes and fittings this European Standardcontains requirements for the end preparation of tubes and fittings for butt welding and guidance isgiven in annex C on other types of jointing commonly used in piping systems for carrying aqueousliquids.A range of commonly used coating and lining materials are identified in annex D of this standard forinformation. The purchaser may select a coating and/or lining material suitable for the applicationwhich should be applied in accordance with the appropriate standard. European Standards forcoatings and linings for steel tubes are being prepared in CEN and are listed in a table in annex D.1 Scope1.1This European Standard specifies requirements for the products listed below used for theconveyance of aqueous liquids, including water for human consumption:¾ seamless and welded non-alloy steel tubes;¾ end preparation of tube ends for butt welding;¾ fittings fabricated from the tube;¾ fittings fabricated from plate or strip.NOTEThis European Standard contains informative annexes giving guidance on tube sizes relevant toeach manufacturing process covered, the relationship between nominal outside diameter (D) and nominal size(DN), on jointing other than butt welding, and on corrosion protection.1.2This European Standard covers a range of tube outside diameters from 26,9 mm to 2 743 mm.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text, and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions of anyof these publications apply to this European Standard only when incorporated in it by amendment orrevision. For undated references the latest edition of the publication referred to applies (includingamendments).EN 287-1, Approval testing of welders - Fusion welding — Part 1: Steels.

EN 10224:2002 (E)6EN 288-1, Specification and qualification of welding procedures for metallic materials — Part 1:General rules for fusion welding.EN 288-2, Specification and approval of welding procedures for metallic materials — Part 2: Weldingprocedure specification for arc welding of steels.EN 288-3, Specification and approval of welding procedures for metallic materials — Part 3: Weldingprocedure tests for arc welding of steels.EN 571-1, Non Destructive Testing — Penetrant testing — Part 1: General principles.EN 910, Destructive tests on welds in metallic materials — Bend tests.EN 1290, Non-destructive examination of welds — Magnetic particle examination of welds.EN 1435, Non-destructive examination of welds — Radiographic examination of welded joints.EN 1714, Non-destructive examination of welds — Ultrasonic examination of welded joints.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 10052, Vocabulary of heat treatment terms for ferrous products.EN 10204, Metallic products — Types of inspection documents.ENV 10220, Seamless and welded steel tubes — Dimensions and masses per unit length.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 ofseamless and welded (except submerged arc welded) ferromagnetic steel tubes for verification ofhydraulic leak-tightness.EN 10246-3, Non-destructive testing of steel tubes — Part 3: Automatic eddy current testing ofseamless and welded (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 magnetictransducer/flux leakage testing of seamless and welded (except submerged arc welded)ferromagnetic steel tubes for the detection of longitudinal imperfections.EN 10246-7, Non-destructive testing of steel tubes — Part 7: Automatic full peripheral ultrasonictesting of seamless and welded (except submerged arc welded) steel tubes for the detection oflongitudinal imperfections.EN 10246-8, Non-destructive testing of steel tubes — Part 8: Automatic ultrasonic testing of the weldseam of electric welded steel tubes for the detection of longitudinal imperfections.EN 10246-9, Non-destructive testing of steel tubes — Part 9: Automatic ultrasonic testing of the weldseam of submerged arc welded steel tubes for the detection of longitudinal and/or transverseimperfections.EN 10246-10, Non-destructive testing of steel tubes — Part 10: Radiographic testing of the weldseam of automatic fusion arc welded steel tubes for the detection of imperfections.EN 10246-17, Non-destructive testing of steel tubes — Part 17: Ultrasonic testing of the tube ends ofseamless and welded steel tubes for the detection of laminar imperfections.EN 10256, Non-destructive testing of steel tubes — Qualification and competence of level 1 andlevel 2 non-destructive testing personnel.

EN 10224:2002 (E)7prEN 102661), Steel tubes, fittings and structural hollow sections — Definitions and symbols for use inproduct standards.CR 10261, Iron and steel — Review of available methods for chemical analysis.prEN 101681), Iron and steel products — Inspection documents — List of information and description.EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces formechanical testing (ISO 377:1997).EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels(ISO 2566-1:1984).EN ISO 14284, Steel and iron — Sampling and preparation of samples for the determination ofchemical composition (ISO 14284:1996).3 Terms, definitions and symbols3.1GeneralFor the purposes of this European Standard the terms and definitions given in EN 10020, EN 10021,EN 10052 and prEN 10266 and the following apply.The symbols used in this European Standard are defined in EN 10020, EN 10021, EN 10052 andprEN 10266.Other symbols for sampling and testing are given in the appropriate sampling and testing standardsreferenced in clauses 9 and 103.2effective lengthactual length that a tube contributes when correctly assembled in a run of piping3.3allowable operating pressure (PFA)maximum hydrostatic pressure that a component is capable of withstanding continuously in service3.4employerorganization for which a person works on a regular basis.

The employer may be either the tube orfitting manufacturer or a third party organization providing non-destructive testing (NDT) services4 Classification and designation4.1 ClassificationAll steels covered by this European Standard are classified as non-alloy steels in accordance withEN 10020.4.2 Designation4.2.1For products covered by this European Standard the steel designation consists of the numberof this European Standard (EN 10224) and either the steel name in accordance with EN 10027-1 andCR 10260 or the steel number in accordance with EN 10027-2 (see Table 1).

1)In preparation; until this document is published as a European Standard the corresponding national standardshould be agreed at the time of enquiry and order.

EN 10224:2002 (E)84.2.2The steel name consists of the following:¾ the capital letter L for line pipe;¾ the specified minimum yield strength of the steel for wall thicknesses less than or equal to16 mm, expressed in MPa2 (see Table 3).5 Information to be supplied by the purchaser5.1 Mandatory informationThe following information shall be supplied by the purchaser at the time of enquiry and order.5.1.1 Tubesa)the quantity (mass or total length or number );b)the term ‘tube’;c) the designation (see 4.2);d) the dimensions (see 7.6);e) the options required (see 5.2).5.1.2 Fittingsa) the number;b) the type of fitting (see 7.8);c) the designation (see 4.2);d) the dimensions (see 7.8);e) the maximum and, where vacuum conditions exist, the minimum, allowable operating pressure(see 7.1);f) the options required (see 5.2)5.2 OptionsA number of options are specified in this European Standard and these are listed below. In the eventthat the purchaser does not indicate his wish to implement any of these options, at the time of enquiryand order the products shall be supplied in accordance with the basic specification.Option: 1)The type of tube, seamless or welded shall be as specified (see 6.3.2.1).Option: 2)The weld area of electric welded tubes shall be heat treated (see 6.3.2.2).

2 1 N/mm2 = 1 MPa

EN 10224:2002 (E)9Option: 3)The maximum copper content shall be specified (see 7.2.1).Option: 4)A product analysis shall be supplied (see 7.2.2).Option: 5)Rectification of the body of submerged arc welded tubes and fittings by welding shall not bepermitted (see 7.4).Option: 6)The tubes shall be supplied in approximate lengths (see 7.6.2).Option: 7)The tubes shall be supplied in exact lengths (see 7.6.2).Option: 8)The ends of tubes and/or fittings shall be prepared for butt welding (see 7.10.1).Option: 9)An alternative bevel end preparation for butt welding shall be provided (see 7.10.4.2).Option: 10)Products shall be supplied with specific inspection and testing (see 8.1).Option: 11)An inspection certificate 3.1.A or 3.1.C or an inspection report 3.2 shall be supplied (see 8.2).Option: 12)The type of leak tightness test shall be as specified (see 10.3.1).Option: 13)The hydrostatic test shall be carried out at a pressure of 1,5 x P.F.A. (see 10.3.2).Option: 14)The method of non-destructive testing for the welds of fittings shall be as specified (see 10.5).Option: 15)The tubes and fittings shall be supplied with a temporary mill protection (see clause 13).Option: 16)The tubes shall be supplied with a coating and/or lining (see clause 13).5.3 Examples of an orderExample 15 km of submerged arc welded tubes in accordance with EN 10224 with an external diameter of914 mm and a thickness of 10,0 mm made from steel L275 with preparation of tube ends for buttwelding and subjected to specific inspection and testing.5000 m - tube - EN 10224 - L275 - 914 ´ 10,0 - Options 1: SAW, 8 and 10.Example 25 gusseted bends in accordance with EN 10224 with external diameter of 914 mm and thickness of10,0 mm made from steel L275, with a 30° angle for operation at 10 bar gauge pressure, suppliedwith an inspection certificate 3.1.C, and temporary mill protection.5 - gusseted bends - EN 10224 - L275 - 914 x 10,0 - 30° - 10 bar - Options 11, 3.1.C and 15.6 Manufacturing process6.1 Steel manufacturing processThe steel manufacturing process is at the discretion of the tube or fittings manufacturer.6.2 Deoxidation processThe steel shall be fully killed.6.3 Product manufacture and delivery conditions6.3.1 GeneralAll NDT activities shall be carried out by qualified and competent level 1, level 2 and/or level 3 NDTpersonnel authorized to operate by the employer.Qualification shall be in accordance with EN 10256 or, at least an equivalent to it.

EN 10224:2002 (E)10NOTE 1It is recommended that level 3 personnel are certified in accordance with EN 473, or, at least, anequivalent 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 individual approved by the employer.NOTE 2The definitions of level 1, 2 and 3 can be found in appropriate standards e.g. EN 473 or EN 10256.6.3.2 Tube6.3.2.1Tube shall be manufactured from one of the steels specified in Table 1 and by one of thefollowing processes.a) Seamless (S);b) Butt welded (BW);c) Electric welded (EW);d) Submerged arc weld (SAW).The welds of butt welded tubes shall be longitudinal; the welds of electric welded and submerged arcwelded tubes shall be either longitudinal or helical.The tube manufacturing process is at the discretion of the manufacturer unless the type of tube,seamless or welded, is specified by the purchaser.Option 1The type of tube, seamless or welded, is specified by the purchaser. The tubes shall then bemarked with an S or W as appropriate (see also 12.1e).NOTEThe manufacturing process is related to the tube diameter and thickness. Information on the typicalrange of sizes and thicknesses available for each process is given in annex A.6.3.2.2The tubes shall be supplied as welded, hot finished, cold formed or cold finished at thediscretion of the manufacturer. However, to achieve the required properties a heat treatment may beperformed.The purchaser may specify that the weld area of as welded EW tubes shall be heat treated to produceproperties similar to those in the body of the tube.Option 2The weld area of EW tubes shall be heat treated.6.3.2.3The delivered tubes shall not include welds used for joining together lengths of the hot orcold rolled strip prior to forming except as specified in 6.3.2.4.6.3.2.4For helically welded submerged arc welded tubes the weld joining lengths of strip may bepart of the delivered tube provided that the weld is made by the same method of welding as thehelical seam weld.6.3.3 Fittings6.3.3.1Fittings shall be manufactured from tubes manufactured in accordance with this standardor from plate or strip made from one of the steel grades in Table 1.6.3.3.2All welds of fittings made from plate or strip and all fabrication welds shall be arc weldsand the preparation for welding and the welding shall be carried out to qualified procedures usingcompetent welders. Procedures in accordance with EN 288-1, 2 and 3 carried out by welders qualifiedin accordance with EN 287-1 meet this requirement.

EN 10224:2002 (E)117 Requirements7.1 GeneralTubes and fittings, when inspected and tested in accordance with clauses 9 and 10, shall comply withthe requirements of 7.2 to 7.10 as appropriate. In addition to the requirements of this EuropeanStandard the general technical delivery conditions specified in EN 10021 apply.Fittings shall be designed to withstand a pressure of not less than 1,5 times the allowable operatingpressure.7.2 Chemical composition7.2.1 Cast analysisThe cast analysis of the steel shall comply with the requirements of Table 1.Table 1 — Chemical composition limits of the cast analysisSteel gradeC %Si %Mn %P %S %Steel nameSteelnumbermaxmaxmaxmaxmaxL23502520,160,351,200,0300,025L27502600,200,401,400,0300,025L355a04190,220,551,600,0300,025a For steel L355 additions of niobium, titanium and vanadium are permitted at the discretion of themanufacturer. In this case the inspection documents shall state the level of these elements.Elements not included in Table 1 may be present but shall not be intentionally added to the steelwithout the agreement of the purchaser, except for elements which may be added for finishing thecast. All appropriate measures shall be taken by the steelmaker to prevent the addition of undesirableelements from scrap or other materials used in the steelmaking process.A maximum copper content lower than that permitted by EN 10020 may be specified by the purchaserto facilitate subsequent forming operations.Option 3The maximum copper content is specified lower than that permitted byEN 10020 for non alloy steel.7.2.2 Product analysisFor products supplied with specific inspection and testing, and when specified by the purchaser, aproduct analysis shall be provided for each grade of steel supplied.Option 4A product analysis shall be provided for each grade of steel supplied.Table 2 specifies the permissible deviations of the product analysis from the specified limits for castanalysis given in Table 1.

EN 10224:2002 (E)12Table 2 — Permissible deviation of the product analysis from the specified castanalysis limits given in Table 1ElementLimiting valuesPermissible deviation%%C£ 0,20+ 0,02> 0,20+ 0,03Si£ 0,55+ 0,05Mn£ 1,60+ 0,10P£ 0,030+ 0,005S£ 0,025+ 0,005Cu£ 0,35+ 0,05> 0,35+ 0,07NOTEWhen welding tubes or fittings produced according to this European Standard account should betaken of the fact that the behaviour of the steel during and after welding is dependent not only on the steel, butalso on the conditions of preparing for and carrying out the welding.7.3 Mechanical properties7.3.1 Tensile test for tubes and fittingsThe minimum yield strength, tensile strength range and minimum elongation for the tubes and fittingscovered by this European Standard shall be in accordance with Table 3.For even curvature bends and fittings made from plate or strip the tensile test properties shall bedetermined after forming.NOTEThe tensile test properties may be affected by subsequent heating or reheat treatments. Purchaserswho intend to heat or reheat treat any of the products are advised to discuss the application and proposedheating or reheat treatment with the manufacturer.

EN 10224:2002 (E)13Table 3 — Mechanical properties at room temperaturesSteel nameTensileMinimum yield strength

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