SIST EN 10217-4:2003
(Main)Welded steel tubes for pressure purposes - Technical delivery conditions - Part 4: Electric welded non-alloy steel tubes with specified low temperature properties
Welded steel tubes for pressure purposes - Technical delivery conditions - Part 4: Electric welded non-alloy steel tubes with specified low temperature properties
This Part of EN 10217 specifies the technical delivery conditions in two test categories of electric welded tubes of circular cross section, with specified low temperature properties, made of non-alloy steel.
Geschweißte Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 4: Elektrisch geschweißte Rohre aus unlegierten Stählen mit festgelegten Eigenschaften bei tiefen Temperaturen
Dieser Teil der EN 10217 enthält die technischen Lieferbedingungen für elektrisch geschweißte Rohre mit kreisförmigem Querschnitt aus unlegiertem Stahl mit festgelegten Eigenschaften bei tiefen Temperaturen und legt dafür zwei Prüfkategorien fest.
Tubes soudés en acier pour service sous pression - Conditions techniques de livraison - Partie 4: Tubes soudés électriquement en acier non allié avec caractéristiques spécifiées a basse température
La présente partie de l'EN 10217 spécifie les conditions techniques de livraison de deux catégories d'essai des tubes soudés électriquement a section circulaire, avec carcatéristiques spécifiées a basse température, fabriqués en aciers non alliés..
Varjene jeklene cevi za tlačne posode - Tehnični dobavni pogoji - 4. del: Električno varjene nelegirane jeklene cevi s specificiranimi lastnostmi za delo pri nizkih temperaturah
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.WHPSHUDWXUDKGeschweißte Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 4: Elektrisch geschweißte Rohre aus unlegierten Stählen mit festgelegten Eigenschaften bei tiefen TemperaturenTubes soudés en acier pour service sous pression - Conditions techniques de livraison - Partie 4: Tubes soudés électriquement en acier non allié avec caractéristiques spécifiées a basse températureWelded steel tubes for pressure purposes - Technical delivery conditions - Part 4: Electric welded non-alloy steel tubes with specified low temperature properties77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific use23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:EN 10217-4:2002SIST EN 10217-4:2003en01-april-2003SIST EN 10217-4:2003SLOVENSKI
STANDARD
SIST EN 10217-4:2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10217-4May 2002ICS 23.040.10; 77.140.75English versionWelded steel tubes for pressure purposes - Technical deliveryconditions - Part 4: Electric welded non-alloy steel tubes withspecified low temperature propertiesTubes soudés en acier pour service sous pression -Conditions techniques de livraison - Partie 4: Tubes soudésélectriquement en acier non allié avec caractéristiquesspécifiées à basse températureGeschweißte Stahlrohre für Druckbeanspruchungen -Technische Lieferbedingungen - Teil 4: Elektrischgeschweißte Rohre aus unlegierten Stählen mitfestgelegten Eigenschaften bei tiefen TemperaturenThis European Standard was approved by CEN on 25 April 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 10217-4:2002 ESIST EN 10217-4:2003
EN 10217-4:2002 (E)2ContentsForeword.31SCOPE.42NORMATIVE REFERENCES.43Definitions.54Symbols.55CLASSIFICATION AND DESIGNATION.65.1Classification.65.2Designation.66Information to be supplied by the purchaser.66.1Mandatory information.66.2Options.66.3Example of an order.77Manufacturing process.77.1Steelmaking process.77.2Deoxidation process.77.3Tube manufacture and delivery conditions.78REQUIREMENTS.88.1General.88.2Chemical composition.98.3Mechanical properties.98.4Appearance and internal soundness.128.5Straightness.138.6Preparation of ends.138.7Dimensions, masses and tolerances.139Inspection.189.1Types of inspection.189.2Inspection documents.189.3Summary of inspection and testing.1810Sampling.2010.1Frequency of tests.2010.2Preparation of samples and test pieces.2011Test methods.2211.1Chemical analysis.2211.2Tensile test on the base material.2211.3Transverse tensile test on the weld.2211.4Flattening test.2211.5Ring tensile test.2211.6Drift expanding test.2311.7Ring expanding test.2311.8Impact test.2311.9Leak tightness test.2411.10Dimensional inspection.2411.11Visual examination.2511.12Non-Destructive
Testing.2511.13Retests, sorting and reprocessing.2512Marking.2512.1Marking to be applied.2512.2Additional marking.2613protection.26Annex ZA (informative).27Bibliography.28SIST EN 10217-4:2003
EN 10217-4:2002 (E)3ForewordThis document (EN 10217-4:2002) has been prepared by Technical Committee ECISS/TC 29, "Steel tubesand 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 an identicaltext or by endorsement, at the latest by November 2002, and conflicting national standards shall bewithdrawn at the latest by November 2002.This document has been prepared under a mandate given to CEN by the European Commission and theEuropean 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 this document.Other parts of EN 10217 are:Part 1:Non-alloy steel tubes with specified room temperature properties.Part 2:Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties.Part 3:Alloy fine grain steel tubes.Part 5:Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperatureproperties.Part 6:Submerged arc welded non-alloy steel tubes with specified low temperature properties.Part 7:Stainless steel tubes.Another
European Standard series covering tubes for pressure purposes is:EN 10216:Seamless
steel tubes for pressure purposes.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 10217-4:2003
EN 10217-4:2002 (E)41 ScopeThis Part of EN 10217 specifies the technical delivery conditions in two test categories of electric weldedtubes of circular cross section, with specified low temperature properties, made of non-alloy steel.2 Normative referencesThis European Standard incorporates by date or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For date references, subsequent amendments to or revisions of, any of these publications apply tothis European Standard only when incorporated in it by amendment or revision. For undated references thelatest edition of the publication referred to applies (including amendments).The requirements of this European Standard rule when they differ from those in the standards anddocuments referred to below:EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test (at ambient temperature)EN 10020, Definitions and classification of grades of steelEN 10021, General technical delivery requirements for steel and iron productsEN 10027-1, Designation systems for steels - Part 1: Steel names, principle symbols.EN 10027-2, Designation systems for steels - Part 2: Numerical systemsEN 10045-1, Metallic materials - Charpy impact test - Part 1: Test methodEN 10052, Vocabulary of heat treatment terms for ferrous productsprEN 10168 1), Iron and steel products - Inspection documents - List of information and descriptionEN 10204, Metallic products - Types of inspection documentsENV 10220, Seamless and welded steel tubes - Dimensions and masses per unit lengthEN 10233, Metallic materials - Tubes - Flattening testEN 10234, Metallic materials - Tubes - Drift expanding testEN 10236, Metallic materials - Tubes - Ring expanding testEN 10237, Metallic materials - Tubes - Ring tensile testEN 10246-1, Non-Destructive Testing of steel tubes Part 1 : Automatic electromagnetic testing of seamlessand welded (except submerged arc welded) ferromagnetic steel tubes for verification of hydraulic leak-tightnessEN 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 imperfectionsEN 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 steeltubes for the detection of longitudinal imperfectionsEN 10246-6, Non-Destructive Testing of steel tubes - Part 6 : Automatic full peripheral ultrasonic testing ofseamless steel tubes for the detection of transverse imperfectionsSIST EN 10217-4:2003
EN 10217-4:2002 (E)5EN 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 longitudinalimperfectionsEN 10246-8, Non-Destructive Testing of steel tubes – Part 8: Automatic ultrasonic testing of the weld seamof electric welded tubes for the detection of longitudinal imperfectionsEN 10246-14, Non-Destructive Testing of steel tubes - Part 7 : Automatic ultrasonic testing of seamless andwelded (except submerged arc welded) steel tubes for the detection of laminar imperfectionsEN 10256, Non-Destructive Testing of steel tubes - Qualification and competence of level 1 and level 2 NDTpersonnelprEN 10266 1), Steel tubes, fittings and structural hollow sections - Symbols and definition of terms for use inproduct standardsCR 10260, Designation systems for steel - Additional symbolsCR 10261, ECISS Information Circular IC 11 - Iron and steel - Review of available methods of chemicalanalysis.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)ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemicalcomposition3 Terms and definitionsFor the purposes of this Part of EN 10217, the terms and definitions given in EN 10020, EN 10021, EN10052, prEN 10266 and the followings apply:3.1test categoryclassification that indicates the extent and level of inspection and testing.3.2employerorganisation for which a person works on a regular basis.NOTEThe employer may be either the tube manufacturer or
supplier or a third party organisation providing Non-Destructive
Testing(NDT) services.4 SymbolsFor the purposes of this Part of EN 10217, the symbols given in prEN 10266 and the following apply: C1,C2 category conformity indicators (see 7.3.1 and 7.3.3.) TCtest category.
1)In preparation; until this document is published as a European standard, a corresponding nationalstandard should be agreed at the time of enquiry and order.SIST EN 10217-4:2003
EN 10217-4:2002 (E)65 Classification and designation5.1 ClassificationIn accordance with the classification system in EN 10020, the steel grade given in Tables 2 and 4 areclassified as non-alloy quality steels.5.2 Designation5.2.1For the tubes covered by this Part of EN 10217 the steel designation consists of: the number of this Part of EN 10217;plus either: the steel name in accordance with EN 10027-1 and CR 10260;or: the steel number allocated in accordance with EN 10027-2.5.2.2The steel name is designated by the capital letter P for pressure purposes; the indication of the specified minimum yield strength expressed in MPa, given in Table 4; the symbol of the delivery condition for the steel grade concerned (see Table 1); the symbol L for low temperature.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);b) the term "tube";c) the dimensions (outside diameter D and wall thickness T) (see Table 6);d) the designation of the steel grade in accordance with this Part of EN 10217 (see 5.2);e) the test category (see 9.3).6.2 OptionsA number of options are specified in this Part of EN 10217 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, thetubes shall be supplied in accordance with the basic specification (see 6.1).1) Tube manufacturing route (see 7.3.2).2) Restriction on copper and tin content (see Table 2).SIST EN 10217-4:2003
EN 10217-4:2002 (E)73) Product analysis (see 8.2.2).4) Specification of leak-tightness test method (see 8.4.3.1).5) Non-Destructive Testing for test category 2 tubes for the detection of transverse imperfections (see8.4.3.2).6) Non-Destructive Testing for test category 2 tubes for the detection of laminar imperfections (see8.4.3.2)7) Special end preparation (see 8.6).8) Exact lengths (see 8.7.3).9) The type of inspection document other than the standard document (see 9.2.1).10) Transverse weld tensile test (see Table 9).11) Test pressure for hydrostatic leak-tightness test (see 11.9.1).12) Wall thickness measurement away from the ends (see 11.10).13) Non-Destructive Testing method for the inspection of the weld seam (see 11.12.1).14) Non-Destructive Testing method for the inspection of the tube body (see 11.12.2)15) Additional marking (see 12.2).16) Protection (see 13).6.3 Example of an order500 m of electric welded tube with an outside diameter of 168,3 mm, a wall thickness of 4,5 mm inaccordance with EN 10217-4, made of steel grade P265NL, test category 1, with a 3.1.C inspectioncertificate in accordance with EN 10204:500 m - Tube - 168,3 x 4,5 - EN 10217-4 - P265NL - TC 1 - Option 9: 3.1.C7 Manufacturing process7.1 Steelmaking processThe steelmaking process is at the discretion of the manufacturer.7.2 Deoxidation processSteels shall be fully killed.7.3 Tube manufacture and delivery conditions7.3.1All NDT activities shall be carried out by qualified and competent level 1,2 and/or 3 personnelauthorised 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, anequivalent to it.SIST EN 10217-4:2003
EN 10217-4:2002 (E)8The operating authorisation issued by the employer shall be in accordance with a written procedure.NDT operations 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.For pressure equipment in categories III and IV (of Directive 97/23-EC) the personnel shall be approved by arecognised third-party organisation. Tubes not conforming to this requirement shall be marked “C 2”, unlessa requirement to mark "C1" (see 7.3.3) applies.7.3.2The tubes shall be manufactured by high frequency welding (HFW), minimum frequency 100 kHz, bythe manufacturing process and routes as specified in Table 1.Unless Option 1 is specified the manufacturing route is at the discretion of the manufacturer.Option 1: The manufacturing route is specified by the purchaser.The finished tubes shall not include welds used for joining together lengths of the strip prior to forming.7.3.3Welding shall be carried out by suitably qualified personnel in accordance with suitable operatingprocedures.For pressure equipment in categories II, III, and IV, (of Directive 97/23 EC) the operating procedures and thepersonnel shall be approved by a competent third-party. Tubes not conforming to this requirement shall bemarked “C 1”.7.3.4The delivery conditions of tubes covered by this Part of EN 10217 are shown in Table 1.Table 1 — Tube manufacturing route and delivery conditionRoutesDelivery conditionRouteN°Starting materialForming operation1Normalising rolled orNormalised stripCold formed (+welded)Normalising weld zone orNormalising (entire tube)2aCold formed (+welded)Normalising (entire tube)2bCold formed (+welded) + hotstretch reducedNormalising (entire tube)2cAs (hot) rolled ornormalising rolled stripCold formed (+ welded) +hot stretch reduced at acontrolled temperature togive a normalised conditionNormalised rolled8 REQUIREMENTS8.1 GeneralWhen supplied in a delivery condition indicated in clause 7.3 and inspected in accordance with clauses 9, 10and 11, the tubes shall conform to the requirements of this Part of EN 10217.Tubes shall be suitable for hot and cold bending provided the bending is carried out in an appropriatemanner.In addition, the general technical delivery requirements specified in EN 10021 shall apply.SIST EN 10217-4:2003
EN 10217-4:2002 (E)98.2 Chemical composition8.2.1 Cast analysisThe cast analysis reported by the steel producer shall apply and conform to the requirements of Table 2.NOTEWhen welding tubes produced in accordance with this Part of EN 10217, 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 the applied heattreatment and the conditions of preparing for and carrying out the welding.8.2.2 Product analysisOption 3: Product analysis for the tube shall be supplied.Table 3 specifies the permissible deviations of the product analysis from the specified limits on cast analysisgiven in Table 2.8.3 Mechanical propertiesThe mechanical properties of the tubes shall conform to the requirements in Tables 4 and 5 and in clauses11.4, 11.5,
11.6 and 11.7.SIST EN 10217-4:2003
EN 10217-4:2002 (E)10Table 2 — Chemical composition (cast analysis) a, in % by massSteel gradeCSiMnPSCrMoNiAl total bCu cNbTiVSteel nameSteelnumbermaxmaxminmaxmaxmaxmaxmaxmaxMinmaxmaxmaxmaxP215NL1.04510,150,350,401,200,0250,0200,300,080,300,0200,300,0100,030,02P265NL1.04530,200,400,601,400,0250,0200,300,080,300,0200,300,0100,030,02a Elements not included in this Table shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be addedfor finishing the cast. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steelmaking process.b Al/N
2, if nitrogen is fixed by niobium, titanium or vanadium the requirement for Altot and Al/N do not apply.cOption 2: In order to facilitate subsequent forming operation, an agreed maximum copper content lower than indicated and an agreed specified maximum tincontent shall apply.SIST EN 10217-4:2003
EN 10217-4:2002 (E)11Table 3 — Permissible deviations in the product analysis from specified limits on cast analysis given inTable 2ElementLimiting value for the castanalysis in accordance withTable 2% by massPermissible deviation of theproduct analysis% by massC 0,20
0,02Si 0,40 0,05Mn 1,40
0,10- 0,05P 0,025+ 0,005S 0,020+ 0,005Al0,020- 0,005Cr 0,30
0,05Cu 0,30
0,05Mo 0,08
0,02Nb 0,010
0,005Ni 0,30
0,05Ti 0,03+ 0,01V 0,02+ 0,01Table 4 — Mechanical properties at room temperature for wall thickness T up to and including 16 mmSteel gradeTensile propertiesSteel nameSteel numberUpper yield strengthor proof strengthReH or Rp0,2
minTensile strengthRmElongation aA min%MPa *MPa *ltP215NL b1.0451215360 to 4802523P265NL1.0453265410 to 5702422al = longitudinal
t = transversebFor wall thikness T
10 mm+ 1 MPa = 1 N/mm2SIST EN 10217-4:2003
EN 10217-4:2002 (E)12Table 5 — Impact properties at for wall thickness T up to and including 16 mmSteel gradeOrientation of test pieces withrespect to tube axisMinimum average absorbedenergyKV
Jat a temperature
of°CSteel nameSteel number-40-20+20P215NL a1.0451Longitudinal404555Longitudinal404550P265NL1.0453Transverse273035a For wall thickness T
10 mm8.4 Appearance and internal soundness8.4.1 GeneralThe weld area shall be free from cracks and lack of fusion.8.4.2 Appearance8.4.2.1The tubes shall be free from external and internal surface defects that can be detected by visualexamination.8.4.2.2The internal and external surface finish of the tubes shall be typical of the manufacturing process and,where applicable, the heat treatment employed. Normally the finish and surface condition shall be such that anysurface imperfections requiring dressing can be identified.8.4.2.3It shall be permissible to dress only by grinding or machining surface imperfections provided that afterdoing so, the wall thickness in the dressed area is not less than the specified minimum wall thickness. All dressedareas shall blend smoothly into the contour of the tube.8.4.2.4Any surface imperfection, which is demonstrated to be deeper than 5 % of the wall thickness T or 3mm whichever is the smaller, shall be dressed.This requirement does not apply to surface imperfection with a depth equal or less 0,3 mm.8.4.2.5Surface imperfections which encroach on the specified minimum wall thickness T shall be considereddefects and tubes containing these shall be deemed not to conform to this Part of EN 10217.8.4.2.6Repairs to the weld seam are not permitted8.4.3 Internal soundness8.4.3.1 Leak TightnessThe tubes shall pass a hydrostatic test (see 11.9.1) or electromagnetic test see (11.9.2) for leak-tightness.Unless option 4 is specified, the choice of the test method is at the discretion of the manufacturer.Option 4: The test method for verification of leak-tightness in accordance with 11.9.1 or 11.9.2 is specified by thepurchaser.SIST EN 10217-4:2003
EN 10217-4:2002 (E)138.4.3.2 Non-Destructive TestingThe full length of the weld seam of tubes of test category 1 shall be subjected to a Non-Destructive Testing for thedetection of imperfections in accordance with 11.12.1.The full length of the weld seam of tubes and the body of tubes of test category 2 shall be submitted to a Non-Destructive Testing for the detection of longitudinal imperfections, in accordance with 11.12.2.Option 5:
The tubes of test category 2 shall be subjected to a Non-Destructive Testing for the detection oftransverse imperfections in accordance with 11.12.3.Option 6:
The tubes of test category 2 shall be subjected to a Non-Destructive Testing for the detection of thelaminar imperfections in accordance with 11.12.4.8.5 StraightnessThe deviation from straightness of any tube length L shall not exceed 0,0015 L. Deviations from straightness overany one metre length shall not exceed 3 mm.8.6 Preparation of endsTubes shall be delivered with square cut ends. The ends shall be free from excessive burrs.Option 7 :The tubes shall be delivered with bevelled ends (see figure 1). The bevel shall have an angle
of 30°50 with a root face C of 1,6 mm
± 0,8 mm.Figure 1 — Tube end bevel8.7 Dimensions, masses and tolerances8.7.1 Diameter and
wall thicknessTubes shall be delivered by outside diameter D and wall thickness T.Preferred outside diameters D and wall thicknesses T have been selected from ENV 10220 and are given in Table6.NOTEDimensions which are different from those in Table 6 may be agreed.SIST EN 10217-4:2003
EN 10217-4:2002 (E)148.7.2 MassFor the mass per unit length the provision of ENV 10220 applies.8.7.3 LengthsUnless option 8 is specified, the tubes shall be delivered in any random lengths. The delivery range shall be agreedat the time of enquiry and order.Option 8:The tubes shall be delivered in exact lengths, the length to be specified at the time of enquiry and order.For t
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