EN 13480-4:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kovinski industrijski cevovodi - 4. del: Proizvodnja in vgradnjaMetallische industrielle Rohrleitungen - Teil 4: Fertigung und VerlegungTuyauteries industrielles métalliques - Partie 4: Fabrication et installationMetallic industrial piping - Part 4: Fabrication and installation77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 13480-4:2002SIST EN 13480-4:2002en01-november-2002SIST EN 13480-4:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13480-4May 2002ICS 23.040.01English versionMetallic industrial piping - Part 4: Fabrication and installationTuyauteries industrielles métalliques - Partie 4: Fabricationet installationMetallische industrielle Rohrleitungen - Teil 4: Fertigungund VerlegungThis European Standard was approved by CEN on 23 May 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 13480-4:2002 ESIST EN 13480-4:2002

Clauses of this European Standard addressing essential safety requirementsor other provisions of EU directives.44Bibliography.45SIST EN 13480-4:2002

Pipes whose properties have been generated by thermomechanical means such as controlled rolling can be formed byhot or cold methods. Such materials may be substantially changed by the forming process and require particular considerationto ensure that the specified properties are recovered after forming.7.1.3The following equations shall be used for the calculation of the percentage deformation for cold formedcylinders and cone products made by rolling (see Figure 7.1.3-1) :a) For cylinders and cones rolled from flat materials (see Figures 7.1.3-1a) and 7.1.3-1c)):mfordd50reV (7.1.3-1)SIST EN 13480-4:2002

1,3 doall diametersyesdo
142 mmno1,3 do < rm < 2,5 dodo > 142 mmyes c1,1 1.2, 1.32.1,2.2 b,3 b4 a5.1, 5.2 a, 5.3 a, 5.4 a6 a78910, 112,5 do
rmall diametersnoNOTE
For do and rm, see Figure 7.2.2-1.a Special heat treatment required
in accordance with the material standards where the minimum designtemperature is below - 10 °C.b If not heat treated, qualification tests are required to demonstrate that the material properties are notimpaired.c Not required for material groups 8.1, 8.2.Figure 7.2.2-1 — Pipe bendingSIST EN 13480-4:2002

b,c°CMaterial typeNameNumberNon-welded partsWelded partsNon-welded parts°CWelded parts°CStabilized steelsnon-Mo-alloyedX 6 CrNiTi 18-10X 6 CrNiNb 18-101.45411.4550900 ± 20 (L) c920 ± 20
1 020 X 6 CrNiMoTi 17-12-2X 6 CrNiMoNb 17-12-21.45711.4580not permitted dnot permitted dMo-alloyed(X 4 NiCrMoCuNb 20-18 e,f)1.4505 1 050non stabilized steelslow C-content /non-Mo-alloyedX 2 CrNi 19-11X 2 CrNiN 18-101.43061.4311900 ± 20(L) c920 ± 20(L) c, h 1 000X 2 CrNiMo 17-12-2X 2 CrNiMo 18-14-3X 2 CrNiMoN 17-11-21.44041.44351.4406960 ± 20 °C(L) c, e980 ± 20(L)c, h, i 1 020low C-content /Mo-alloyedX 2 CrNiMoN 17-13-3X 2 CrNiMo 18-15-4X 2 CrNiMoN 17-13-51.44291.44381.4439Forming started at1 000 °C g to 1 150 °C andfinished at > 750 C (fastestpossible Cooling).Forming started at 1 000 °C to1 150 °C and finished at > 750 °C(fastest possible Cooling) andstabilized fillers or non-stabilizedfillers with
0,04 % C in weldmetal 1 040high C-content /nonMo-alloyedX 4 CrNi 18-10X 4 CrNi 18-121.43011.4303not permittednot permitted 1 000high C-content/Mo-alloyedX 5 CrNiMo 17-12-2X 3 CrNiMo 17-13-31.44011.4436Forming started at1 000 °C g to 1 150 C e andfinished at > 875 °C(quenching in/with water forwall thicknesses
6 mm)Forming started at 1 000°C to1 150 °C e and finished at> 875°C (quenching in/with waterfor wall thicknesses
6 mm) andstabilized fillers or non-stabilizedfillers with
0,06 % C 1 050SIST EN 13480-4:2002

6 mm the type of cooling shall be quenching in/with water or cooling in air flow (W SL).c For eord < 6 mm cooling shall be in air flow (L).d Unless required by process conditions.e Minimal critical interval is 5 min.f Materials not in EN 10088-1.g Starting temperature of 1 000 °C may be lowered if part was in the quenched state prior to hot forming.h Stabilizing not permissible if stabilized fillers are used.i Steels No. 1.4406 and 1.4429 may be stabilized at lower temperatures if the same material characteristics will be reached.SIST EN 13480-4:2002

For clarity, waves have been exaggerated.Figure 7.4.3-1 — Waves at bends7.4.4 Start-up bulge of induction bendsThe height of any start-up bulge/hump shall not exceed 25 % of the nominal wall thickness, and the maximumdimension of its base shall be at least eight times its height and shall blend smoothly into the adjoining surfaces(see Figure 7.4.4-1).The out-of-roundness tolerance specified in 7.4.1 shall also be applicable on a cross-section taken at the point ofirregularity.SIST EN 13480-4:2002

a
8 h
4eh where e is the nominal wall thicknessFigure 7.4.4-1 — Start-up bulge7.5 Surface finishThe surface of the bend shall be such as to permit a visual examination.All bends shall be free from surface imperfections such as cracks, indentations, laps and scabs. Where surfaceimperfections are ground out, the wall thickness shall not be reduced below the calculated minimum wall thickness.Areas which are ground to remove imperfections shall be examined by surface crack detection methodsappropriate to the material to ensure complete removal of the imperfections.Repairs by welding shall not be permitted.8 Installation of piping8.1 Fixing and alignmentThe piping shall be installed in accordance with the design requirements given in EN 13480-3. For specialoperations, e.g. balancing and cold pull, instructions shall be specified. The slope of the piping shall be checked toensure that continuous falls are achieved in accordance with the design.Where necessary, during assembly of piping sections, the installer shall use temporary supports to ensure that nounacceptable stress or deformation occurs in the piping and connected equipment as a consequence of thecantilever effect of unsupported weight distribution.SIST EN 13480-4:2002
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