iTeh Standards Store...EN 10204:2004, Metallic products — Types of inspection documents EN 12952‐5:2011, Water‐tube boilers and auxiliary installations — Part 5: Workmanship

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Kovinski industrijski cevovodi - 4. del: Proizvodnja in vgradnja

Metallische industrielle Rohrleitungen - Teil 4: Fertigung und Verlegung

Tuyauteries industrielles métalliques - Partie 4: Fabrication et installation

Metallic industrial piping - Part 4: Fabrication and installation

77.140.75 Jeklene cevi in cevni profili za posebne namene

Steel pipes and tubes for specific use

23.040.10 Železne in jeklene cevi Iron and steel pipes

ICS:

Ta slovenski standard je istoveten z: EN 13480-4:2017

SIST EN 13480-4:2018 en,fr,de

01-januar-2018

SIST EN 13480-4:2018SLOVENSKI STANDARD

SIST EN 13480-4:2012/A3:2017SIST EN 13480-4:2012/A4:2017SIST EN 13480-4:2012/A5:2018

SIST EN 13480-4:2012SIST EN 13480-4:2012/A1:2013SIST EN 13480-4:2012/A2:2016

iTeh STANDARD PREVIEW(standards.iteh.ai)

SIST EN 13480-4:2018https://standards.iteh.ai/catalog/standards/sist/20650b99-9f14-4de1-9391-

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EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 13480-4 June 2017

ICS 23.040.01 Supersedes EN 13480-4:2012English Version Metallic industrial piping - Part 4: Fabrication and installation Tuyauteries industrielles métalliques - Partie 4 : Fabrication et installation Metallische industrielle Rohrleitungen - Teil 4: Fertigung und Verlegung

This European Standard was approved by CEN on 21 June 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T É E U R O P É E N D E N O R M A L I S A T I O N E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13480-4:2017 E

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Contents

PageEuropeanforeword.......................................................................................................................................................5

1 Scope....................................................................................................................................................................7

2 Normativereferences....................................................................................................................................7

3 Termsanddefinitions...................................................................................................................................8

4 Symbols...............................................................................................................................................................8

5 General................................................................................................................................................................8 5.1 Requirementsonthemanufacturer.........................................................................................................8 5.2 Requirementsonfabricatorsandinstallersofpipingandsupports...........................................9 5.3 Requirementsforfabricationandinstallation....................................................................................9 5.4 Classificationofpiping...............................................................................................................................10 5.5 Materialgrouping........................................................................................................................................10 5.6 Tolerances......................................................................................................................................................10

6 Cuttingandbevelling..................................................................................................................................10 6.1 General.............................................................................................................................................................10 6.2 Identificationofpressureparts..............................................................................................................10

7 Bendingandotherforming......................................................................................................................11 7.1 General.............................................................................................................................................................11 7.2 Heattreatmentaftercoldforming.........................................................................................................13 7.2.1 Flatproducts..................................................................................................................................................13 7.2.2 Pipes..................................................................................................................................................................13 7.3 Heattreatmentafterhotforming...........................................................................................................15 7.3.1 Materialgroups1,3,4,5and6...............................................................................................................15 7.3.2 Materialgroups8.1and8.2......................................................................................................................15 7.3.3 Heattreatmentafterhotformingformaterialgroup10...............................................................17 7.3.4 Heattreatmentafterhotformingforcladmaterials......................................................................17 7.4 Tolerances......................................................................................................................................................17 7.4.1 Out‐of‐roundnessofbendsunderinternalpressureequalto,orgreaterthan,the

externalpressure.........................................................................................................................................17 7.4.2 Out‐of‐roundnessofbendsunderexternalpressureandvacuum............................................18 7.4.3 Wavesatbends.............................................................................................................................................18 7.4.4 Start‐upbulgeofinductionbends..........................................................................................................19 7.5 Surfacefinish.................................................................................................................................................20

8 Installationofpiping...................................................................................................................................20 8.1 Fixingandalignment..................................................................................................................................20 8.2 Fieldrunpiping.............................................................................................................................................22 8.3 Flangedorsimilarmechanicalconnections.......................................................................................22 8.3.1 Flangeconnections......................................................................................................................................22 8.3.2 Threadedconnections................................................................................................................................23 8.3.3 Couplingsandcompressionfittings......................................................................................................23 8.4 Protectionofendsofpipingcomponents............................................................................................23

9 Welding............................................................................................................................................................24

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9.1 Weldingpersonnel.......................................................................................................................................24 9.2 Weldingprocedurespecifications..........................................................................................................24 9.3 Weldingprocedures....................................................................................................................................24 9.3.1 Verificationofsuitability...........................................................................................................................24 9.3.2 Application......................................................................................................................................................25 9.4 Fillermetalsandauxiliarymaterials....................................................................................................26 9.5 Climaticconditions......................................................................................................................................26 9.6 Cleaningbeforeandafterwelding.........................................................................................................26 9.7 Jointpreparation..........................................................................................................................................27 9.8 Edgeprotection.............................................................................................................................................27 9.9 Assemblyforwelding..................................................................................................................................27 9.10 Earthing............................................................................................................................................................27 9.11 Performanceofwelding.............................................................................................................................28 9.11.1 Preheating.......................................................................................................................................................28 9.11.2 Strikingmarks...............................................................................................................................................28 9.11.3 Externalwelds...............................................................................................................................................28 9.11.4 Dissimilarjoints............................................................................................................................................28 9.12 Backingrings..................................................................................................................................................28 9.13 Attachments....................................................................................................................................................29 9.13.1 General.............................................................................................................................................................29 9.13.2 Temporaryattachments............................................................................................................................29 9.13.3 Permanentattachments.............................................................................................................................29 9.14 Post‐weldheattreatment..........................................................................................................................29 9.14.1 General.............................................................................................................................................................29 9.14.2 Equipment.......................................................................................................................................................33 9.14.3 Temperaturemeasurements...................................................................................................................33 9.14.4 Controllingthickness..................................................................................................................................33 9.14.5 Rateofheating...............................................................................................................................................35 9.14.6 Localheattreatment...................................................................................................................................35 9.14.7 Insulation.........................................................................................................................................................36 9.15 Weldidentification.......................................................................................................................................36

10 Adjustmentandrepair................................................................................................................................36 10.1 General.............................................................................................................................................................36 10.2 Adjustment......................................................................................................................................................36 10.2.1 Coldhammering............................................................................................................................................36 10.2.2 Adjustmentsbymeansofheat.................................................................................................................36 10.2.3 Adjustmentbywelding...............................................................................................................................37 10.2.4 Adjustmentbylocalforging......................................................................................................................37 10.3 Weldrepair.....................................................................................................................................................37

11 Markinganddocumentation....................................................................................................................37 11.1 Markingofspoolsandcomponentsforinstallation........................................................................37 11.2 Markingandidentificationofinstalledpiping..................................................................................37 11.2.1 General.............................................................................................................................................................37 11.2.2 CEMarkingofinstalledpiping.................................................................................................................38 11.2.3 Technicalidentificationofinstalledpiping........................................................................................38

12 Additionalrequirements...........................................................................................................................39 12.1 Cleaning............................................................................................................................................................39 12.2 Temporarypreservation...........................................................................................................................39 12.3 Externalcorrosionprotection.................................................................................................................39 12.4 Thermalandacousticinsulation.............................................................................................................39 12.5 Connectionsforstaticelectricity............................................................................................................40

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AnnexA(informative)Contaminationandsurfacequalityofstainlesssteel.....................................41 A.1 Introduction...................................................................................................................................................41 A.2 Protection.......................................................................................................................................................41 A.2.1 Handling..........................................................................................................................................................41 A.2.2 Duringfabricationandinstallation.......................................................................................................41 A.3 Controlledcleaningmethods...................................................................................................................42 A.4 Chemicaltreatments...................................................................................................................................42 A.4.1 Acidpickling...................................................................................................................................................42 A.4.2 Decontamination,passivation.................................................................................................................43 A.5 Preparingforshipment..............................................................................................................................43

AnnexB(normative)Dimensionaltolerancesforfabricatedspools.......................................................44 AnnexY(informative)HistoryofEN13480‐4..................................................................................................46 Y.1 DifferencesbetweenEN13480‐4:2012andEN13480‐4:2017...................................................46

AnnexZA(informative)RelationshipbetweenthisEuropeanStandardandtheEssentialRequirementsofEUDirective2014/68/EUaimedtobecovered..............................................47

Bibliography.................................................................................................................................................................48

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Europeanforeword

Thisdocument(EN13480‐4:2017)hasbeenpreparedbyTechnicalCommitteeCEN/TC267“Industrialpipingandpipelines”,thesecretariatofwhichisheldbyAFNOR.This European Standard shall be given the status of a national standard, either by publication of anidentical text orby endorsement, at the latest byDecember2017, and conflictingnational standardsshallbewithdrawnatthelatestbyDecember2017.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CEN[and/orCENELEC]shallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropeanFreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s).For relationship with EUDirective(s), see informative Annex ZA, which is an integral part of thisdocument.ThisEuropeanStandardEN13480 formetallic industrialpipingconsistsofeight interdependentandnotdissociablePartswhichare: Part1:General;

Part2:Materials;

Part3:Designandcalculation;

Part4:Fabricationandinstallation;

Part5:Inspectionandtesting;

Part6:Additionalrequirementsforburiedpiping;

CEN/TR13480‐7,Guidanceontheuseofconformityassessmentprocedures;

Part8:Additionalrequirementsforaluminiumandaluminiumalloypiping.

Although these Parts may be obtained separately, it should be recognised that the Parts are inter‐dependant. As such the manufacture of metallic industrial piping requires the application of all therelevantPartsinorderfortherequirementsoftheStandardtobesatisfactorilyfulfilled.This European Standard will be maintained by a Maintenance MHD working group whose scope ofworkingislimitedtocorrectionsandinterpretationsrelatedtoEN13480.

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The contact to submit queries can be found at http://www.unm.fr ([email protected]). A form forsubmittingquestionscanbedownloadedfromthelinktotheMHDwebsite.Aftersubjectexpertshaveagreedananswer, theanswerwillbecommunicatedto thequestioner.CorrectedpageswillbegivenspecificissuenumberandissuedbyCENaccordingtoCENRules.InterpretationsheetswillbepostedonthewebsiteoftheMHD.This document supersedes EN13480‐4:2012. This new edition incorporates the AmendmentswhichhavebeenapprovedpreviouslybyCENmembers,and thecorrectedpagesup to Issue4withoutanyfurther technical change. Annex Y provides details of significant technical changes between thisEuropeanStandardandthepreviousedition.Amendments to this new edition may be issued from time to time and then used immediately asalternativestorulescontainedherein.According to the CEN‐CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,Croatia, Cyprus, CzechRepublic,Denmark,Estonia, Finland, FormerYugoslavRepublic ofMacedonia,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,Netherlands,Norway,Poland,Portugal,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TurkeyandtheUnitedKingdom.

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1 Scope

ThisPartofthisEuropeanStandardspecifiestherequirementsforfabricationandinstallationofpipingsystems,includingsupports,designedinaccordancewithEN13480‐3:2017.2 Normativereferences

The following documents, inwhole or in part, are normatively referenced in this document and areindispensable for its application. For dated references, only the edition cited applies. For undatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.EN10204:2004,Metallicproducts—TypesofinspectiondocumentsEN 12952‐5:2011, Water‐tube boilers and auxiliary installations — Part 5: Workmanship andconstructionofpressurepartsoftheboilerEN13480‐1:2017,Metallicindustrialpiping—Part1:GeneralEN13480‐2:2017,Metallicindustrialpiping—Part2:MaterialsEN13480‐3:2017,Metallicindustrialpiping—Part3:DesignandcalculationEN13480‐5:2017,Metallicindustrialpiping—Part5:InspectionandtestingENISO3834‐3:2005,Quality requirements for fusionweldingofmetallicmaterials—Part3:Standardqualityrequirements(ISO3834‐3:2005)

ENISO4063:2010,Weldingand alliedprocesses—Nomenclature ofprocessesand referencenumbers(ISO4063:2009,Correctedversion2010‐03‐01)EN ISO 5817:2007,Welding— Fusion‐welded joints in steel, nickel, titanium and their alloys (beamweldingexcluded)—Quality levels for imperfections (ISO5817:2003,correctedversion:2005, includingTechnicalCorrigendum1:2006)

ENISO9606‐1:2013, Qualification testing of welders — Fusion welding — Part 1: Steels(ISO9606‐1:2012,includingCor1:2012)ENISO13920,Welding— General tolerances forwelded constructions—Dimensions for lengths andangles—Shapeandposition(ISO13920)

ENISO14732:2013,Weldingpersonnel—Qualificationtestingofweldingoperatorsandweldsettersformechanizedandautomaticweldingofmetallicmaterials(ISO14732:2013)ENISO15609(allparts),Specificationandqualificationofweldingproceduresformetallicmaterials—WeldingprocedurespecificationENISO15610:2003, Specification and qualification of welding procedures for metallic materials—Qualificationbasedontestedweldingconsumables(ISO15610:2003)

ENISO15611:2003, Specification and qualification of welding procedures for metallic materials—Qualificationbasedonpreviousweldingexperience(ISO15611:2003)

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ENISO15612:2004, Specification and qualification of welding procedures for metallic materials—Qualificationbyadoptionofastandardweldingprocedure(ISO15612:2004)

ENISO15613:2004, Specification and qualification of welding procedures for metallic materials—Qualificationbasedonpre‐productionweldingtest(ISO15613:2004)ENISO15614‐1:2004, Specification and qualification ofwelding procedures formetallicmaterials—Weldingproceduretest—Part1:Arcandgasweldingofsteelsandarcweldingofnickelandnickelalloys(ISO15614‐1:2004)

ENISO17663:2009,Welding—Qualityrequirementsforheattreatmentinconnectionwithweldingandalliedprocesses(ISO17663:2009)

CENISO/TR15608, Welding — Guidelines for a metallic materials grouping system(ISO/TR15608)3 Termsanddefinitions

Forthepurposesofthisdocument,thetermsanddefinitionsgiveninEN13480‐1:2017togetherwiththefollowingapply.3.1fieldrunpipingpipinginstalledwithoutpreplanningbydrawingsofthepipingroutingandthesupportpointsNote1toentry: TypicaldimensionsareDN50orsmaller.3.2spool(withorwithoutoverlength)prefabricatedassemblyofcomponentswhichformspartofapipingsystem3.3coldformingformingatambienttemperature,butnotbelow+5°C3.4hotformingforferriticsteels,formingattemperaturesatorabovethemaximumpermissibletemperatureforpost‐weldheattreatment;forausteniticandaustenitic‐ferriticsteelsattemperaturesabove300°C4 Symbols

ForthepurposesofthisPartofthisEuropeanStandard,thesymbolsgiveninEN13480‐1:2017apply.AdditionalsymbolsaredefinedinappropriateclausesofthisPart.5 General

5.1 Requirementsonthemanufacturer

Themanufacturershallberesponsibleforthefabricationandtheinstallation,evenifthisworkwillbesub‐contractedtootherfabricatorsand/orinstallers.

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5.2 Requirementsonfabricatorsandinstallersofpipingandsupports

5.2.1 The fabricators and/or installers shall ensure the correct transport, handling, storage,fabrication,installationandtestingofallpipingcomponentsincludingsupports.5.2.2 The fabricators and installers shallhave access to facilitieswhichenable them tohandle thepipingcomponentsincludingsupportscorrectlyandtocarryouttherequiredtests.5.2.3 The fabricators and/or installers shall employ their own responsible supervisors andcompetent personnel. If sub‐contractors are employed, the fabricator and/or installer remainresponsiblefortheircompetenceandthecompliancewiththisEuropeanStandard.NOTE Thetaskandresponsibilitiesofaweldingco‐ordinatoraredescribedinENISO14731.5.2.4 Allstagesof fabricationand installationshallbesupervised insuchawayas tomaintain thedesignintegrityofthefinishedsystem.5.2.5 Co‐ordination between those responsible for design and those responsible for fabricationand/orinstallationandtestingshallbemaintainedatall times,toensurethatfabrication, installationandtestingiscarriedoutinaccordancewiththedesignspecification.5.2.6 Thefabricatorand/orinstallerofthepipingshallfulfiltherequirementsofENISO3834‐3.5.3 Requirementsforfabricationandinstallation

5.3.1 Prior to any operation, a check shall be made to ensure that the spools and componentssuppliedareinaccordancewiththerelevantdocuments(specifications,drawings,certificatesetc.).5.3.2 Prefabricated spools and components shall be protected during handling, transport, andstorage.5.3.3 Whenjoiningspoolsorcomponents,theyshallnotbestrainednordeformedotherthanasmayberequiredbythedesign.Designer'sinstallationinstructions,ifany,shallbeobserved.NOTE 5.3.3isdeemedtobefulfilled,whenthequalitycharacteristicsofthematerialarenotimpairedbycoldor hot forming, e.g. by cutting, grinding, straightening or bending, of the components and when the differentcomponentshavebeenjoinedsuchthatstressesanddeformationswhichcanimpairthesafetyofthepipingareexcluded.5.3.4 Any temporary supportsor restraintsusedasanaidduring transport, installationor testingshallberemovedpriortocommissioning.5.3.5 Appropriatemeasures shall be taken to avoid corrosion‐inducing contamination of stainlesssteel and non‐ferrous materials. If contamination occurs, it shall be properly removed as soon aspracticable,notwithstandinganyfinaltreatment.NOTE RecommendedmethodsforthepreventionandremovalofcontaminationonstainlesssteelaregiveninAnnexA.5.3.6 Pipingforfluidswhicharelikelytocausecondensationshallbeinstalledwithadequateslopesandtraps.

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5.4 Classificationofpiping

Thepipingsystemsshallbeclassifiedintodifferentcategoriesdependingonthefluidcarried,diameterandpressure.ThesearegiveninEN13480‐1.5.5 Materialgrouping

MaterialgroupingisgiveninEN13480‐2.5.6 Tolerances

Tolerances shall comply with ENISO13920, classC and class G, except where other classes arespecifiedinthisEuropeanStandardorbydesign.Angular tolerances for fabricatedpipeworkshall bedeterminedby thedimensional tolerance for theterminalpointsofthefinishedpart.Alternativetolerancesforfabricationandinstallationofpipeworkshallbedeterminedandinallcasestheseshallbeidentifiedinthespecification.DimensionaltolerancesforfabricatedspoolsshallcomplywithAnnexB.6 Cuttingandbevelling

6.1 General

Cuttingandbevellingbymachiningshallbepermittedforallmaterials.Flamecuttingshallbepermittedformaterialgroups1,2,3,4and5onlywithpreheatingasspecifiedforwelding.NOTE Flamecutting formaterialgroups1and2canbeused forbevelling, if therequiredbevel formsandtolerancescanbeachievedandtheheataffectedzonehasnodetrimentaleffectsonthequalityoftheweld.Formaterialgroups3,4and5,theheataffectedzoneshallberemovedbymachiningorgrinding.Plasma cutting shall be permitted for all material groups given in this European Standard. Plasmacuttingshallbeprecededbypreheating,asspecifiedforwelding.Othercuttingandbevellingprocessesarepermitted,providedtheirsuitabilityisdemonstrated.6.2 Identificationofpressureparts

For pressure parts, identification of materials shall remain possible, either by retaining or bytransferringthemarkstipulatedbytheproductstandard,orbyusingauniquecodekeptintherecordsofthepipingfabricator.Stampingshallnotintroduceanotchingeffect,thereforelow‐stressstampingisrecommended.If any method of marking other than hard‐stamping, edging or engraving (vibrograph) is used, thefabricatorshallensurethatconfusionbetweendifferentmaterialsisnotpossible.

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7 Bendingandotherforming

7.1 General

7.1.1 Fabricatorsofformedpressurepartsshallhaveadequateprocedures,equipmentandtoolsfortheformingandthesubsequentheattreatment.Theprocedure forbendingshallbequalifiedaccordingtoEN12952‐5:2011,AnnexA,withregardtoexaminationandrangeofqualification.Pipes with internal coating such as glass, rubber or plastics shall not be formed unless it has beendemonstratedthattheformingprocessisnotdetrimentaltothelining.NOTE There are two kinds of formingwithin the scope of this European Standard: cold forming and hotforming.Thethicknessafterbendingorformingshallbenotlessthanthatrequiredbythedesign.Longitudinalweldsshouldbelocatedattheneutralzone.TherangeoftheneutralzoneafterbendingisgiveninFigure7.1.1‐1.

Key1extrados2intrados(a)optimalrangeforthelongitudinalweldatbending(b)weld

Figure7.1.1‐1—Optimalrangeforthelongitudinalweldatbending

7.1.2 The forming and post‐forming heat treatment of thermomechanical steels shall be givenindividualconsideration.Accountshallbetakenoftherecommendationsofthesteelmakers.Pipeswhosepropertieshavebeengeneratedbythermomechanicalmeanssuchascontrolledrollingcanbeformedbycoldmethods.Suchmaterialsmaybesubstantiallychangedbytheformingprocessandrequireparticularconsiderationtoensurethatthespecifiedpropertiesarerecoveredafterforming.7.1.3 Thefollowingformulaeshallbeusedforthecalculationofthepercentagedeformationforcoldformedcylindersandconeproductsmadebyrolling(seeFigure7.1.3‐1):

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a) Forcylindersandconesrolledfromflatmaterials(seeFigures7.1.3‐1a)and7.1.3‐1c)):

mf

ordd

50re

V (7.1.3‐1)

b) Forcylindersandconesrolledfromintermediateproduct(seeFigures7.1.3‐1b)and7.1.3‐1c)):

mi

mf

mf

intd 1

50rr

re

V (7.1.3‐2)

whereorde istheorderedthickness;inte isthethicknessoftheintermediateproduct;mfr istheaverageradiusofthefinishedproduct;mir istheaverageradiusoftheintermediateproduct;

Vd isthedeformationasapercentage.NOTE Ifnointermediatequalityheattreatmentisappliedbetweenindividualformingsteps,thedeformation

is the total amountofdeformationof the individual steps. If intermediate quality heat treatment isapplied between the forming steps, the deformation is that deformation applied after the lasttreatment.

a)Initialproduct b)Intermediateproduct c)Finishedproduct

Figure7.1.3‐1—Formingofcylindersandcones

7.1.4 Toolsandequipmentusedforformingshallbemaintainedtoensureasmoothprofilefreefromstress‐raisingdefects,e.g.scores.

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7.1.5 Heattreatmentafterformingshallbeinaccordancewiththerespectivematerialstandard.7.1.6 Weldingontoformedareasshallnotbeperformeduntilheattreatmentiscomplete.7.2 Heattreatmentaftercoldforming

7.2.1 Flatproducts

FlatproductsshallbeheattreatedaftercoldformingasrequiredinTable7.2.1‐1.For specialdesign reasons, forexample cyclic loadingor stress corrosioncracking,heat treatment inexcessofthatinTable7.2.1‐1maybespecifiedaftercoldforming.Noheattreatmentforausteniticsteelsisrequired:a) Forausteniticsteelshavingadocumentedminimumvalueofelongationafterfracture(rupture)A5

equaltoorgreaterthan30%,amaximumlevelof15%colddeformationshallbeacceptable.A greater deformation may be accepted if the evidence is supplied that there is a minimumelongationafterfracture(rupture)of15%aftercoldforming.Suchevidenceshallbedeemedsupplied, if theacceptancecertificateshows thatelongationafterfracture(rupture)A5isnotlessthan30%.Thisshallbeapplicableonlyincaseswherethereisnoriskofstresscorrosioncracking;

b) Forausteniticsteelshavingarequiredminimumvalueofelongationafterfracture(rupture)A5lessthan 30%, evidence shall be supplied that there is a minimum elongation of 15% after coldforming;

c) Deformationshallnotexceed10%iftheworkingtemperatureisbelow‐196°C.Table7.2.1‐1—Heattreatmentaftercoldformingofflatproducts

MaterialgroupsaccordingtoCENISO/TR15608

Deformation Heattreatment

1.1,1.2,1.3,2.1,2.2a,3,4b,5.1,5.2b,5.3b,5.4b,6b,

7.1,7.2,7.3,9.1,9.2,10

5% no>5% yes

8.1,8.2 c da Ifnotheattreated,qualificationtestsarerequiredtodemonstratethatthematerial

propertiesarenotimpaired.b Heat treatment required in accordance with the material standards where the

minimummetaltemperatureisbelow‐10°C.c See7.2.1a),b)andc).d Solutionannealedandquenchedorstabilisedmaterialsdonotrequireheat

treatmentaftercoldforming.7.2.2 Pipes

PipesshallbeheattreatedaftercoldforminginaccordancewithTable7.2.2‐1.

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Documents

iTeh Standards Store...EN 10204:2004, Metallic products — Types of inspection documents EN 12952‐5:2011, Water‐tube boilers and auxiliary installations — Part 5: Workmanship