SIST EN 10217-6:2003
(Main)Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties
Welded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Submerged arc 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 submerged arc welded tubes of circular cross section, with specified low temperature properties, made of non-alloy steel.
Geschweißte Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 6: Unterpulvergeschweißte Rohre aus unlegierten Stählen mit festgelegten Eigenschaften bei tiefen Temperaturen
Dieser Teil der EN 10217 enthält die technischen Lieferbedingungen für unterpulvergeschweißte Rohre mit kreisförmigem Querschnitt aus unlegierten Stählen 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 6: Tubes soudés a l'arc immergé sous flux en poudre en acier non allié avec caractéristiques spécifiées a basse température
La présente partie de l'EN 10217 spécifie les conditions techniques de livraison, pour deux catégories d'essai, des tubes soudés a l'arc immergé sous flux de poudre a section circulaire en aciers non allié, avec caractéristiques spécifiées a basse température.
Varjene jeklene cevi za tlačne posode - Tehnični dobavni pogoji - 6. del: Obločno pod praškom 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.Geschweißte Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 6: Unterpulvergeschweißte Rohre aus unlegierten Stählen mit festgelegten Eigenschaften bei tiefen TemperaturenTubes soudés en acier pour service sous pression - Conditions techniques de livraison - Partie 6: Tubes soudés a l'arc immergé sous flux en poudre en acier non allié avec caractéristiques spécifiées a basse températureWelded steel tubes for pressure purposes - Technical delivery conditions - Part 6: Submerged arc 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 10217-6:2002SIST EN 10217-6:2003en01-april-2003SIST EN 10217-6:2003SLOVENSKI
STANDARD
SIST EN 10217-6:2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10217-6May 2002ICS 23.040.10; 77.140.75English versionWelded steel tubes for pressure purposes - Technical deliveryconditions - Part 6: Submerged arc welded non-alloy steel tubeswith specified low temperature propertiesTubes soudés en acier pour service sous pression -Conditions techniques de livraison - Partie 6: Tubes soudésà l'arc immergé sous flux en poudre en acier non allié aveccaractéristiques spécifiées à basse températureGeschweißte Stahlrohre für Druckbeanspruchungen -Technische Lieferbedingungen - Teil 6:Unterpulvergeschweißte 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 10217-6:2002 ESIST EN 10217-6:2003
EN 10217-6:2002 (E)2ContentsForeword.31Scope.42Normative references.43Terms and definitions.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.98.1General.98.2Chemical composition.98.3Mechanical properties.118.4Appearance and internal soundness.118.5Straightness.128.6Preparation of ends.128.7Dimensions, masses and tolerances.139Inspection.169.1Types of inspection.169.2Inspection documents.169.3Summary of inspection and testing.1710Sampling.1810.1Frequency of tests.1810.2Preparation of samples and test pieces.1811Test methods.2011.1Chemical analysis.2011.2Tensile test on the base material.2011.3Tranverse tensile test on the weld.2011.4Weld bend test.2011.5Impact test.2011.6Hydrostatic leak tightness test.2111.7Dimensional inspection.2111.8Visual examination.2111.9Non-Destructive Testing.2211.10Retests, sorting and reprocessing.2212Marking.2212.1Marking to be applied.2212.2Additional marking.2313Protection.23Annex A (normative).24Annex ZA (informative).31Bibliography.32SIST EN 10217-6:2003
EN 10217-6:2002 (E)3ForewordThis document (EN 10217-6:2002) 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 November 2002, and conflicting national standards shall be withdrawn at the latestby November 2002.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree 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 4:Electric welded non-alloy steel tubes with specified low temperature properties.Part 5:Submerged arc welded non-alloy and alloy steel tubes with specified elevated 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 10217-6:2003
EN 10217-6:2002 (E)41 ScopeThis Part of EN 10217 specifies the technical delivery conditions in two test categories of submerged arc 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. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordate 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).The requirements of this European Standard rule when they differ from those in the standards and documentsreferred to below:EN 760, Welding consumables - Fluxes for submerged arc welding – Classification.EN 895, Destructive tests on welds in metallic materials - Transverse tensile test.EN 910, Destructive tests on weld in metallic materials -Bend test.EN 1321, Destructive tests on welds in metallic materials - Macroscopic and microscopic examination of welds.EN 10002-1, Metallic materials - Tensile testing - Part 1 : Method of test (at ambient temperature).EN 10020, Definitions and classification of grades of steel.EN 10021, General technical delivery requirements for steel and iron products.EN 10027-1, Designation systems for steels - Part 1 : Steel names, principle symbols.EN 10027-2, Designation systems for steels - Part 2 : Numerical systems.EN 10045-1, Metallic materials - Charpy impact test - Part 1 : Test method.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 10246-9, Non-Destructive Testing
of steel tubes – Part 9: Automatic ultrasonic testing of the weld seam ofsubmerged arc-welded steel tubes for the detection of longitudinal and/or transverse imperfections.EN 10246-10, Non-Destructive Testing
of steel tubes – Part.10: Radiographic testing of the weld seam ofautomatic fusion arc-welded steel tubes for the detection of imperfections.EN 10246-15, Non-Destructive Testing of steel tubes - Part 15: Automatic ultrasonic testing of strip/ plate used inthe manufacture of welded steel tubes for the detection of laminar imperfections.EN 10246-16, Non-Destructive
Testing of steel tubes - Part 16: Automatic ultrasonic testing of the area adjacent tothe weld seam of welded steel tubes for the detection of laminar imperfections.EN 10246-17, Non-Destructive
Testing of steel tubes - Part 17: Ultrasonic testing of tube ends of seamless andwelded steel tubes for the detection of laminar imperfections.EN 10256, Non-Destructive Testing
of steel tubes - Qualification and competence of level 1 and level 2 NDTpersonnel.SIST EN 10217-6:2003
EN 10217-6:2002 (E)5prEN 10168 1), Iron and steel products - Inspection documents - List of information and description.prEN 10266 1), Steel tubes, fittings and structural hollow sections - Symbols and definition of terms for use inproduct standardsEN 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)ISO 14284, Iron and steel products - Sampling and preparation of samples for the determination of the chemicalcomposition.CR 10260, Designation systems for steel - Additional symbols.CR 10261, ECISS Information Circular IC 11 - Iron and steel - Review of available methods of chemical analysis.3 Terms and definitionsFor the purpose of this Part of EN 10217 the definitions given in EN 10020, EN 10021, EN 10052, prEN 10266 andthe 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.3.3qualification of welding procedureTesting and inspection of the welding procedure in accordance with annex A by the manufacturer.3.4approval of welding procedureTesting and inspection of the welding procedure witnessed and approved in accordance with annex A by anauthorised body.4 SymbolsFor the purposes of this part of EN 10217. The symbols given in prEN 10266 and the following apply: C1,C2 is the 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 national standardshould be agreed at the time of enquiry and order.SIST EN 10217-6:2003
EN 10217-6:2002 (E)65 Classification and designation5.1 ClassificationIn accordance with
the classification system in EN 10020, the steel grade given in Tables 2 and 4 the are classifiedas 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, (see 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, 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 this EN 10217 and these are listed below. In the event that thepurchaser does not indicate his 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) Tube manufacturing route (see 7.3.2).2) Restriction on copper and tin content (see Table 2).3) Product analysis (see 8.2.2).4) Special end
preparation (see 8.6).SIST EN 10217-6:2003
EN 10217-6:2002 (E)75) Exact lengths (see 8.7.3).6) Type of inspection document other than the standard document (see 9.2.1).7) Transverse weld tensile test (see Table 11).8) Test pressure for hydrostatic leak-tightness test (see 11.6).9) Wall thickness measurement away from the ends (see 11.7).10) Non Destructive Testing method for the inspection of weld seam (see 11.9.1).11) Image quality class R1 of EN 10246-10 for the non-destructive radiographic
inspection of the weld seam(see 11.9.1).12) Additional marking (see 12.2).13) Protection (see 13).6.3 Example of an order500 m of submerged arc welded tube with an outside diameter of 508 mm, a wall thickness
of 4,5 mm inaccordance with EN 10217-6, made of steel grade P265NL, test category 1, with a 3.1.C inspection certificate inaccordance with
EN 10204:500 m - Tube - 508 x 4,5 - EN 10217-6 - P265NL - TC 1 - Option 6: 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 personnel authorised tooperate 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 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”, unless arequirement to mark “C1” (see 7.3.3) applies7.3.2The tubes shall be manufactured by a submerged arc welding (SAW) process and in accordance with oneof the routes as specified in Table 1.Unless Option 1 is specified the manufacturing route is at the discretion of the manufacturer.SIST EN 10217-6:2003
EN 10217-6:2002 (E)8Option 1: The manufacturing route is specified by the purchaser.Tubes shall be submerged arc welded using at least one weld run on the inside and one weld run on the outside ofthe tube.The strip used for the manufacture of the helically submerged arc welded (SAWH) tubes shall have a width of notless than 0.8 times or more than 3.0 times the outside diameter of the tube.The finished tubes shall not include welds used for joining together lengths of the hot or cold rolled strip or plateprior to forming except that for helically welded.For helycally welded submerged arc welded (SAWH) tubes, when the weld joining lengths of strip are part of thedelivered tube, they shall have the welding procedure qualified in accordance with annex A and the weld shall besubjected to the same inspection and testing as the helical weld.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 be marked“C 1”.7.3.4The welding procedure for SAW tubes shall be qualified in accordance with Annex A.7.3.5The delivery condition of tubes covered by this Part of EN 10217 are shown in Table 1Table 1 — Tube manufacturing process, route and delivery conditionManufacturing processManufacturing routeDeliveryRouteN°ProcessSymbolsStarting materialForming operationcondition1As (hot) rolled plate or stripCold formedNormalized(entire tube)2aSubmerged arcwelded(SAW)Normalising rolled plate orstrip2b-longitudinal seam- (SAWL)Normalised plate or stripCold formedWithout subsequentheat treatment a3-helical seam- (SAWH)As (hot) rolled or Normalisingornormalising rolled plate orstripNormalisingformed bWithout subsequentheat treatment aa Stress relieving treatment on the weld is permissibleb Only applicable to SAWL tubesSIST EN 10217-6:2003
EN 10217-6:2002 (E)98 Requirements8.1 GeneralThe tubes, when supplied in a delivery condition indicated in clause 7.3 and inspected in accordance with
clauses9, 10 and 11, shall conform to with the requirements of this Part EN 10217.Tubes shall be suitable for hot and cold bending provided the bending is carried out in an appropriate manner.In addition, the general technical delivery requirements specified in EN 10021 shall apply.8.2 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 fact that thebehaviour of the steel during and after welding is dependent not only on the steel, but also on the applied heat treatment andthe conditions of preparing for and carrying out the welding.8.2.2 Product analysisOption 3: A product analysis for the tube shall be supplied.Table 3 specifies the permissible deviations of the product analysis from the specified limits on cast analysis givenin Table 2.SIST EN 10217-6:2003
EN 10217-6:2002 (E)10Table 2 — Chemical composition (cast analysis) a, in % by massSteel gradeCSiMnPSCrMoNiAl total bCu cNbTiVSteelnameSteelnumbermaxmaxmaxmaxmaxmaxmaxminmaxmaxmaxmaxP215NL1.04510,150,350,40to1,200,0250,0200,300,080,300,0200,300,0100,030,02P265NL1.04530,200,400,60to1,400,0250,0200,300,080,300,0200,300,0100,030,02aElements 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 added for finishing the cast. All appropriate measures shall be taken to prevent theaddition of undesirable elements from scrap or other materials used in the steel making process.bThis requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elementswhich shall be reported. When using titanium, the producer shall verify that (Al+Ti/2)
0,020%.cOption 2: In order to facilitate subsequent forming operation, an agreed maximum copper content lower than indicatedand an agreed specified maximum tin content shall apply.Table 3 — Permissible deviations in the product analysis from specified limits on cast analysis given inTable 2ElementLimiting value for the cast analysis inaccordance with Table 3% by massPermissible deviation of the productanalysis% 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+ 0,01SIST EN 10217-6:2003
EN 10217-6:2002 (E)118.3 Mechanical propertiesThe mechanical properties of the tubes shall conform to the requirements in Tables 4 and 5 and in clause 11.4.Table 4 — Mechanical properties at room temperature for wall thickness up to and including 25 mmSteel gradeTensile propertiesUpper yield strengthor proof strengthReH or Rp0,2
min.Tensile strengthRmElongation aA
min.%Steel nameSteel NumberMPa *MPa *ltP215NL b1.0451215360 to 4802523P265NL1.0453265410 to 5702422a l = longitudinal
t = transversebFor wall thickness T
10 mm*1 MPa = 1 N/mm2Table 5 — Impact properties for wall thickness T up to and including 25 mmSteel gradeOrientation of testpieces with
respect totube axisMinimum average absorbed energyKVJat a temperature
of
°CSteel nameSteel number-40-20+20P215NL a1.0451Longitudinal404555Longitudinal404550P265NL1.0453Transverse273035aFor wall thickness T
10 mm8.4 Appearance and internal soundness8.4.1 GeneralThe weld area shall be free from cracks, lack of fusion and lack of penetration.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.SIST EN 10217-6:2003
EN 10217-6:2002 (E)128.4.2.3It 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 shall be considereddefects and tubes containing these shall be deemed not to conform to with this Part of EN 10217.8.4.2.6Repairs to the weld seam are permitted in accordance with
an established and agreed procedure.8.4.3 Internal soundness8.4.4 Leak TightnessThe tubes shall pass a hydrostatic test (see 11.6) for leak-tightness.8.4.4.1 Non-Destructive TestingThe full length of weld seam of tubes of test category 1 and test category 2 shall be subjected to a Non-DestructiveTesting for the detection of imperfections in accordance with
clauses 11.9.1.Additionally the edges of plate or strip and the ends of tubes of test category 2 shall be subjected to a Non-Destructive Testing for the detection of laminar imperfections in accordance with clauses 11.9.2.8.5 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 4: 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, except that for wall thicknesses T greater than 20 mm, an agreedalternative bevel may be specifiedFigure 1 — Tube end bevelSIST EN 10217-6:2003
EN 10217-6:2002 (E)138.7 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.8.7.2 MassFor the mass per unit length the provision of ENV 10220 applies.8.7.3 LengthsUnless option 5 is specified, the tubes shall be delivered in random length. The delivery range shall be agreed atthe time of enquiry and order.Option 5: The tubes shall be delivered in exact lengths, the length to be specified at the time of enquiry and order.For tolerances see 8.7.4.5.8.7.4 Tolerances8.7.4.1 Tolerances on diameter and thicknessTh
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