SIST EN 10216-4:2003
(Main)Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and alloy steel tubes with specified low temperature properties
Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and alloy steel tubes with specified low temperature properties
This Part of EN 10216 specifies the technical delivery conditions in two categories for seamless tubes of circular cross section, with specified low temperature properties, made of non-alloy and alloy steel.
Nahtlose Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 4: Rohre aus unlegierten und legierten Stählen mit festgelegten Eigenschaften bei tiefen Temperaturen
Dieser Teil der EN 10216 enthält die technischen Lieferbedingungen für nahtlose Rohre mit kreisförmigem Querschnitt aus unlegiertem und legiertem Stahl mit festgelegten Eigenschaften bei tiefen Temperaturen und legt dafür zwei Prüfkategorien fest.
Tubes sans soudure en acier pour service sous pression - Conditions techniques de livraison - Partie 4: Tubes en acier non allié et allié avec caractéristiques spécifiées a basse température
La présente partie de l'EN 10216 spécifie les conditions techniques de livraison, selon deux catégories d'essai, pour les tubes sans soudure a section circulaire en acier non allié et allié, avec caractéristiques spécifiées a basse température .
Nevarjene jeklene cevi za tlačne posode - Tehnični dobavni pogoji - 4. del: Nelegirane in legirane 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.WHPSHUDWXUDKNahtlose Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 4: Rohre aus unlegierten und legierten Stählen mit festgelegten Eigenschaften bei tiefen TemperaturenTubes sans soudure en acier pour service sous pression - Conditions techniques de livraison - Partie 4: Tubes en acier non allié et allié avec caractéristiques spécifiées a basse températureSeamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and 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 10216-4:2002SIST EN 10216-4:2003en01-april-2003SIST EN 10216-4:2003SLOVENSKI
STANDARD
SIST EN 10216-4:2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10216-4May 2002ICS 23.040.10; 77.140.75English versionSeamless steel tubes for pressure purposes - Technical deliveryconditions - Part 4: Non-alloy and alloy steel tubes with specifiedlow temperature propertiesTubes sans soudure en acier pour service sous pression -Conditions techniques de livraison - Partie 4: Tubes enacier non allié et allié avec caractéristiques spécifiées àbasse températureNahtlose Stahlrohre für Druckbeanspruchungen -Technische Lieferbedingungen - Teil 4: Rohre ausunlegierten und legierten Stählen mit festgelegtenEigenschaften 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 10216-4:2002 ESIST EN 10216-4:2003
EN 10216-4:2002 (E)2ContentsForeword.41SCOPE.52NORMATIVE REFERENCES.53TERMS AND DEFINITIONS.64SYMBOLS.65CLASSIFICATION AND DESIGNATION.75.1Classification.75.2Designation.76INFORMATION TO BE SUPPLIED BY THE PURCHASER.76.1Mandatory information.76.2Options.76.3Example of an order.87MANUFACTURING PROCESS.87.1Steelmaking process.87.2Deoxidation process.87.3Tube manufacture and delivery conditions.88REQUIREMENTS.108.1General.108.2Chemical composition.108.3Mechanical properties.108.4Appearance and internal soundness.148.5Straightness.148.6Preparation of ends.148.7Dimensions, masses and tolerances.159INSPECTION.199.1Types of inspection.199.2Inspection documents.199.3Summary of inspection and testing.1910SAMPLING.2010.1Frequency of tests.2010.2Preparation of samples and test pieces.2111TEST METHODS.2211.1Chemical analysis.2211.2Tensile test.2211.3Flattening test.2211.4Ring tensile test.2311.5Drift expanding test.2311.6Ring expanding test.2411.7Impact test.2411.8Leak tightness test.2511.9Dimensional inspection.2511.10Visual examination.2511.11Non-Destructive Testing.2511.12Material identification.2611.13Retests, sorting and reprocessing.2612MARKING.2612.1Marking to be applied.2612.2Additional marking.2713PROTECTION.27SIST EN 10216-4:2003
EN 10216-4:2002 (E)3Annex ZA (informative).28Bibliography.29SIST EN 10216-4:2003
EN 10216-4:2002 (E)4ForewordThis document (EN 10216-4:2002) 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 10216 are:Part 1:Non-alloy steel tubes with specified room temperature properties.Part 2 :Non-alloy and alloy steels tubes with specified elevated temperature propertiesPart 3 :Alloy fine grain steel tubesPart 5 :Stainless steel tubesAnother European Standard series covering tubes for pressure purposes is:EN 10217:Welded steel tubes for pressure purposesAccording 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 10216-4:2003
EN 10216-4:2002 (E)51 SCOPEThis Part of EN 10216 specifies the technical delivery conditions in two test categories for seamless tubes ofcircular cross section, with specified low temperature properties, made of non-alloy and 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 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 lengthEN 10233, Metallic materials - Tubes - Flattening test.EN 10234, Metallic materials - Tubes - Drift expanding test.EN 10236, Metallic materials - Tubes - Ring expanding test.EN 10237, Metallic materials - Tubes - Ring tensile test.EN 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-tightness.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 steeltubes for the detection of longitudinal imperfections.EN 10246-6, Non-Destructive
Testing of steel tubes - Part 6: Automatic full peripheral ultrasonic testing ofseamless steel tubes for the detection of transverse imperfections.SIST EN 10216-4:2003
EN 10216-4:2002 (E)6EN 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 longitudinalimperfections.EN 10246-14, Non-Destructive Testing of steel tubes - Part 14:Automatic ultrasonic testing of seamless andwelded (except submerged arc welded) 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.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)prEN 10168 1) Iron and steel products - Inspection documents - List of information and descriptionprEN 10266 1) Steel tubes, fittings and structural hollow sections - Symbols and definition of terms for use inproduct standardsISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemicalcompositionCR 10260, Designation systems for steel - Additional symbolsCR 10261, ECISS Information Circular IC 11 - Iron and steel - Review of available methods of chemicalanalysis.3 TERMS AND DEFINITIONSFor the purposes of this Part of EN 10216, the terms and definitions of EN 10020, EN 10021, EN 10052,prEN 10266 and the following 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 10216, the symbols given prEN 10266 and the following apply: TCtest category
1)In preparation; until this document is published as a European Standard, the corresponding national standard(s)should be agreed at the time of enquiry and order.SIST EN 10216-4:2003
EN 10216-4:2002 (E)75 CLASSIFICATION AND DESIGNATION5.1 ClassificationIn accordance with
the classification system in EN 10020, the steel grades P 215NL, P 255QL and P265NLare classified as non-alloy quality steels and the other steel grades are classified as alloy special steels.5.2 Designation5.2.1For the tubes covered by this Part of EN 10216 the steel designation
consists of: the number of this Part of EN 10216 ;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 of non-alloy steel grades is designated by: the capital letter P for pressure purposes; the indication of the specified minimum yield strength at room temperature, expressed in MPa (seeTable 4); the symbol of the heat treatment for the steel grade concerned (see Table 1); the symbol L for low temperature.5.2.3The steel name of alloy-steel grades is designated by the chemical composition (see Table 2) andthe symbols for the heat treatment, where specified in column 1 and footnote a) of Table 16 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 10216 (see 5.2);e) the test category for
non-alloy steel(see 9.3).6.2 OptionsA number of options are specified in this Part of EN 10216 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).SIST EN 10216-4:2003
EN 10216-4:2002 (E)81) cold finishing (see 7.3.2);2) restriction on copper and tin content (see Table 2);3) product analysis (see 8.2.2);4) selection of leak-tightness test method (see 8.4.2.1);5) Non-Destructive Testing
for test category 2 tubes for detection of transverse imperfections (see8.4.2.2);6) Non-Destructive Testing
for test category 2 tubes for detection of laminar imperfections (see8.4.2.2);7) special ends 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) test pressure for hydrostatic leak-tightness test (see 11.8.1);11) wall thickness measurement away from the ends (see 11.9);12) Non-Destructive Testing
method (see 11.11.1);13) additional marking (see 12.2);14) protection (see 13);6.3 Example of an order50 t of seamless tube with an outside diameter of 168,3 mm, a wall thickness of 4,5 mm in accordance withEN 10216-4,
made of steel grade P265NL, test category 1,
with a 3.1.C inspection certificate in accordancewith
EN 10204:50 t - Tube - 168,3 x 4,5 - EN 10216-4 - P265NL - TC1 - 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 10216-4:2003
EN 10216-4:2002 (E)9The operating authorisation issued by the employer shall be in accordance with a written procedure.NDT operations shall be authorised by level 3 NDT individual approved by the employer.EXAMPLEThe definition of level 1, 2 and 3 can be found in appropriate Standards, e.g. EN 473 and EN 102567.3.2The tubes shall be manufactured by a seamless process.Unless option 1 is specified, the tubes may be either hot or cold finished at the discretion of themanufacturer. The terms “ hot finished “ and “ cold finished “ apply to the condition of the tube before it isheat treated in accordance with
7.3.3.Option 1: The tubes shall be cold finished before heat treatment.7.3.3The tubes shall be supplied in the relevant heat treatment conditions as specified in Table 1.Table 1 — Delivery conditionsSteel gradeQuenching and temperingSteel nameSteelnumberHeattreatment a bNormalisingtemperature° CTemperingtemperature°CHardeningtemperature° CCoolingmedium cTemperingtemperature°CP215NL1.0451+N900 to 940--------P255QL1.0452+QT----890 to 930Water or oil600 to 680P265NL1.0453+N880 to 940--------26CrMo4-21.7219+QT----830 to 860Water or oil600 to 68011 MnNi5-31.6212+N d890 to 940(580 to 640)------13 MnNi6-31.6217+N d)890 to 940(580 to 640)------+NT830 to 880580 to 640------12Ni141.5637+QT----820 to 880Water or oil580 to 660+NT800 to 850580 to 640------X12Ni51.5680+QT----800 to 850Water or oil580 to 660+N+NT880 to 915+775 to 805565 to 605 e-----X10Ni91.5682+QT f(880 to 930)--770 to 820water or oil540 to 600aN = Normalising ; QT = Quenching and Tempering; NT = Normalising and TemperingbWhere two types of heat treatment are specified for a steel grade, the application depends on wall thickness and T/Dratio. The decision is left to the manufacturer but shall be reported in the inspection document.cWhen choosing the cooling medium the influence of other parameters, such as dimensions and quenchingtemperature, on properties and crack susceptibility should be taken into account. Other cooling media such assynthetic quenchants may also be
used.dTempering can occasionally be necessary after normalising; The decision shall be left to the discretion of themanufacturer but shall be stated to the customer at the time of enquiry and order. Steel tubes treated in such a wayshall be designated by the steel name supplemented by the symbol “+NT “.eCooling at still air or accelerated cooling.fAn additional prenormalising treatment, in the temperature range indicated may be necessary for this grade. In such acase the manufacturer shall inform the purchaser.SIST EN 10216-4:2003
EN 10216-4:2002 (E)108 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 EN 10216.In addition, the general technical delivery requirements specified in EN 10021 shall apply.Tubes shall be suitable for hot and cold bending provided the bending is carried out in an appropriatemanner.8.2 Chemical composition8.2.1 Cast analysisThe cast analysis reported by the steel producer shall apply and conform to with the requirements of Table 2.NOTEWhen welding tubes produced in accordance with
this Part of EN 10216, 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: A product analysis for the tubes shall be supplied.Table 3 specifies the permissible deviations of the product analysis from the specified limits on cast analysisgiven in Table 2 are specified in Table 3.8.3 Mechanical propertiesThe mechanical properties of the tubes shall conform to the requirements in Tables 4 and 5 and in 11.3 to11.6.SIST EN 10216-4:2003
EN 10216-4:2002 (E)11Table 2 — Chemical composition (cast analysis) a, in % by massSteel gradeCSiMnPSCrNiMoAl total bCu cNbTiVSteel nameSteelnumbermaxmaxminmaxmaxmaxmaxP215NL1.0451 0,15 0,350,40 to 1,200,0250,020 0,30 0,30 0,080,0200,300,0100,0400,02P255QL1.0452 0,17 0,350,40 to1,200,0250,020 0,30 0,30 0,080,0200,300,0100,0400,02P265NL1.0453 0,20 0,400,60 to 1,400,0250,020 0,30 0,30 0,080,0200,300,0100,0400,0226CrMo4-21.72190,22 to 0,29 0,350,50 to 0,800,0250,0200,90 to 1,20--0,15 to 0,30--0,30------11MnNi5-31.6212 0,14 0,500,70 to 1,500,0250,015--0,30d to 0,80--0,0200,300,05--0,0513MnNi6-31.6217 0,16 0,500,85 to 1,700,0250,015--0,30d to 0,85--0,0200,300,05--0,0512Ni141.5637 0,150,15 to 0,350,30 to 0,800,0250,010--3,25 to 3,75----0,30----0,05X12Ni51.5680 0,15 0,350,30 to 0,800,0200,010--4,50 to 5,30----0,30----0,05X10Ni91.5682 0,130,15 to 0,350,30 to0,800,0200,010--8,50 to 9,50 0,10--0,30----0,05aElements 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. Allappropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process.bBy agreement between purchaser and manufacturer, aluminium may be replaced by other elements having a similar effect.cOption 2: In order to facilitate subsequent forming operation, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply.dThe lower limit for the nickel content may be reduced to not less than 0,15 % for tubes with wall thickness not exceeding 10 mmSIST EN 10216-4:2003
EN 10216-4:2002 (E)12Table 3 — Permissible deviations of the product analysis from specified limits on cast analysis givenin Table 2ElementLimiting value for the castanalysis in accordance withTable 2% by massPermissible deviation of theproduct analysis% by massC 0,29
0,02 0,40
0,05Si> 0, 40 0,50
0,06Mn 1,70
0,10- 0,05P 0,025+ 0,005 0,015+ 0,003S> 0,015
0,020+ 0,005Al 0,020 0,005Cr 1,20
0,10Cu 0,30
0,05Mo 0,30
0,05Nb 0,05 0,005 0,85
0,050,85
3,75
0,073,75
5,30
0,10Ni5,30
9,50
0,15Ti 0,040+ 0,01V 0,05+ 0,01Table 4 — Mechanical properties at room temperature for wall thickness up to and including 40 mmSteel gradeTensile propertiesSteel numberUpper yield strength orproof strengthReH or Rp0,2minTensile
strengthRmElongationA
min% aSteel NameMPa *MPa *ltP215NL1.0451215 b360 to 4802523P255QL1.0452255360 to4902321P265NL1.0453265 c410 to 570242226CrMo4-21.7219440560 to 740181611MnNi5-31.6212285410 to 530242213MnNi6-31.6217355490 to 610222012Ni141.5637345440 to 6202220X12Ni51.5680390510 to 7102119X10Ni91.5682510690 to 8402018al = longitudinal
t = transverse.bFor wall thickness
10 mm.cFor wall thickness
25 mm*1 MPA = 1N/mm2SIST EN 10216-4:2003
EN 10216-4:2002 (E)13Table 5 — Minimum impact energySteel GradeWall thicknessTOrientation oftest pieces withrespect to tubeMinimum average impact energyKV
Jat a temperature of °CSteel NameSteelnumbermmaxis-196-120-110-100-90-60-50-40-20+20P215NL1.0451 10Longitudinal-------404555Longitudinal------40455060
25Transverse------27303540Longitudinal-------404555P255QL1.0452 25
to
40Transverse-------273035Longitudinal-------404550P265NL1.0453 25Transverse-------273035Longitudinal-----404045506026CrMo4-21.7219 40Transverse-----272730354011MnNi5-31.6212Longitudinal-----404550557013MnNi6-31.6217 40Transverse-----2730354045Longitudinal---40455055556065 25Transverse---27303535404545Longitudinal----40455050556512Ni141.5637 25
to
40Transverse----273030354045Longitudinal-404550556565657070
25Transverse-273030354545455050Longitudinal-4045506065656570X12Ni51.5680 25
to
40Transverse-2730304045454550Longitudinal40505060607070707070X10Ni91.5682 40Transverse27353540405050505050SIST EN 10216-4:2003
EN 10216-4:2002 (E)148.4 Appearance and internal soundness8.4.1 Appearance8.4.1.1The tubes shall be free from external and internal surface defects that can be detected by visualexamination.8.4.1.2The internal and external surface finish of the tubes shall be typical of the manufacturingprocess and the heat treatment employed. Normally the finish and surface condition shall be such that anysurface imperfections or marks requiring dressing can be identified.8.4.1.3It shall be permissible to dress, only by grinding or machining, surface imperfections providedthat after doing so, the wall thickness in the dressed area is not less than the specified minimum wallthickness. All dressed areas shall blend smoothly into the contour of the tube.8.4.1.4Any surface imperfection, which is demonstrated to be deeper than 5 % of the wall thickness Tor 3 mm whichever is the smaller, shall be dressed.This requirement does not apply to surface imperfection with a depth equal or less 0,3 mm.8.4.1.5Surface imperfections which encroach on the specified minimum wall thickness shall beconsidered defects and tubes containing these shall be deemed not to comply with this Part of EN 10216.8.4.2 Internal soundness8.4.2.1 Leak-tightnessThe tubes shall pass a hydrostatic test (see 11.8.1) or electromagnetic test (see 11.8.2) 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 11.8.1 or 11.8.2 is specifiedby the purchaser.8.4.2.2 Non-Destructive TestingThe tubes of test category 2 shall be subjected to a Non-Destructive Testing for the detection of longitudinalimperfections, in accordance with
11.11.1.Option 5: The
tubes of test category 2 shall be subjected to a Non-Destructive testing for the detection oftransverse imperfectio
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