Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes

This document specifies the technical delivery conditions in two test categories for welded tubes of circular cross-section made of austenitic and austenitic-ferritic stainless steel which are intended for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures.
NOTE   Once the reference of this document is published in the Official Journal of the European Union (OJEU) under Directive 2014/68/EU, pressure equipment directive, presumption of conformity to the Essential Safety Requirements (ESR) of Directive 2014/68/EU is limited to technical data of materials in this document and does not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equipment to verify that the ESRs of the Pressure Equipment Directive are satisfied, needs to be done by the designer of the pressure equipment, taking also into account the subsequent manufacturing processes which could affect properties of the base materials.

Geschweißte Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen - Teil 7: Rohre aus nichtrostenden Stählen

Dieses Dokument legt die technischen Lieferbedingungen für geschweißte Rohre mit kreisförmigem Querschnitt aus austenitischen und aus austenitisch-ferritischen nichtrostenden Stählen, die für Druckbeanspruchungen und für korrosive Medien bei Raumtemperatur, bei tiefen Temperaturen und bei erhöhten Temperaturen bestimmt sind, in zwei Prüfkategorien fest.
ANMERKUNG   Nach Veröffentlichung der Verweisung auf dieses Dokument im EU Amtsblatt (OJEU) unter der Richtlinie 2014/68/EU ist die Annahme ihrer Konformität mit den grundlegenden Anforderungen (ESR, en: Essential Safety Requirements) der Richtlinie 2014/68/EU auf die technischen Daten von Werkstoffen in diesem Dokument beschränkt, und es darf nicht angenommen werden, dass damit die Eignung des Werkstoffs für ein bestimmtes Ausrüstungsteil festgestellt ist. Folglich müssen die in dieser Werkstoffnorm angegebenen technischen Parameter im Hinblick auf die konstruktiven Anforderungen dieses bestimmten Ausrüstungs¬teils ermittelt werden, um damit zu verifizieren, dass den ESRs der Druckgeräterichtlinie entsprochen wird. Dies muss durch den Ausleger oder den Hersteller der Druckgeräte geschehen, der auch den nachfolgenden Herstellungsprozess berücksichtigen muss, der die Eigenschaften des Grundmaterials verändern kann.

Tubes soudés en acier pour service sous pression - Conditions techniques de livraison - Partie 7 : Tubes en aciers inoxydables

Le présent document spécifie les conditions techniques de livraison, pour deux catégories d'essai, des tubes soudés à section circulaire fabriqués en acier austénitique et en acier inoxydable austéno-ferritique utilisés dans les applications nécessitant une résistance à la pression et à la corrosion à température ambiante, à basse température ou à température élevée.
NOTE   Dès lors que le présent document est publié dans le Journal Officiel de l’Union européenne (JOUE) en lien avec la Directive 2014/68/UE, la présomption de conformité avec les exigences essentielles de sécurité de la Directive 2014/68/UE se limite aux données techniques des matériaux spécifiées dans la présente Norme européenne et ne suppose pas l’adéquation des matériaux avec un appareil en particulier. Par conséquent, il doit être procédé à l’évaluation des données techniques spécifiées dans la présente norme de matériaux par rapport aux exigences concernant la conception de cet équipement spécifique, afin de vérifier que les exigences essentielles de sécurité de la Directive 2014/68/UE soient satisfaites qui doit être effectuée par le concepteur ou le fabricant, en tenant compte également des procédés ultérieurs de fabrication qui peuvent affecter les propriétés des matériaux de base.

Varjene jeklene cevi za tlačne posode - Tehnični dobavni pogoji - 7. del: Cevi iz nerjavnega jekla

General Information

Status
Published
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
21-Apr-2021
Completion Date
21-Apr-2021

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SLOVENSKI STANDARD
SIST EN 10217-7:2021
01-junij-2021
Nadomešča:
SIST EN 10217-7:2015

Varjene jeklene cevi za tlačne posode - Tehnični dobavni pogoji - 7. del: Cevi iz

nerjavnega jekla

Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7:

Stainless steel tubes
Geschweißte Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen -
Teil 7: Rohre aus nichtrostenden Stählen

Tubes soudés en acier pour service sous pression - Conditions techniques de livraison -

Partie 7 : Tubes en aciers inoxydables
Ta slovenski standard je istoveten z: EN 10217-7:2021
ICS:
23.020.32 Tlačne posode Pressure vessels
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 10217-7:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 10217-7:2021
---------------------- Page: 2 ----------------------
SIST EN 10217-7:2021
EN 10217-7
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2021
EUROPÄISCHE NORM
ICS 23.040.10; 77.140.75 Supersedes EN 10217-7:2014
English Version
Welded steel tubes for pressure purposes - Technical
delivery conditions - Part 7: Stainless steel tubes

Tubes soudés en acier pour service sous pression - Geschweißte Stahlrohre für Druckbeanspruchungen -

Conditions techniques de livraison - Partie 7 : Tubes en Technische Lieferbedingungen - Teil 7: Rohre aus

aciers inoxydables nichtrostenden Stählen
This European Standard was approved by CEN on 12 March 2021.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10217-7:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 7

4 Symbols ............................................................................................................................................................... 7

5 Classification and designation .................................................................................................................... 7

5.1 Classification ..................................................................................................................................................... 7

5.2 Designation........................................................................................................................................................ 8

6 Information to be supplied by the purchaser ....................................................................................... 8

6.1 Mandatory information ................................................................................................................................ 8

6.2 Options ................................................................................................................................................................ 8

6.3 Examples of an order ..................................................................................................................................... 9

6.3.1 Example 1 ........................................................................................................................................................... 9

6.3.2 Example 2 ........................................................................................................................................................ 10

7 Manufacturing process ............................................................................................................................... 10

7.1 Steelmaking process ................................................................................................................................... 10

7.2 Tube manufacture and conditions ......................................................................................................... 10

8 Requirements ................................................................................................................................................ 13

8.1 General ............................................................................................................................................................. 13

8.2 Chemical composition ................................................................................................................................ 13

8.2.1 Cast analysis ................................................................................................................................................... 13

8.2.2 Product analysis ........................................................................................................................................... 13

8.3 Mechanical properties ................................................................................................................................ 16

8.3.1 At room temperature .................................................................................................................................. 16

8.3.2 At elevated temperature ........................................................................................................................... 17

8.3.3 At low temperature ..................................................................................................................................... 17

8.4 Corrosion resistance ................................................................................................................................... 23

8.5 Appearance and internal soundness..................................................................................................... 23

8.5.1 Appearance ..................................................................................................................................................... 23

8.5.2 Internal soundness ...................................................................................................................................... 24

8.6 Straightness .................................................................................................................................................... 24

8.7 Preparation of ends ..................................................................................................................................... 24

8.8 Dimensions, masses and tolerances ...................................................................................................... 25

8.8.1 Outside diameter and wall thickness .................................................................................................... 25

8.8.2 Mass ................................................................................................................................................................... 25

8.8.3 Lengths ............................................................................................................................................................. 25

8.8.4 Tolerances ...................................................................................................................................................... 25

9 Inspection ....................................................................................................................................................... 27

9.1 Type of inspection ........................................................................................................................................ 27

9.2 Inspection documents ................................................................................................................................ 27

9.2.1 Types of inspection documents............................................................................................................... 27

9.2.2 Content of inspection documents ........................................................................................................... 28

9.3 Summary of inspection and verification testing ............................................................................... 28

---------------------- Page: 4 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)

10 Sampling .......................................................................................................................................................... 29

10.1 Test unit ........................................................................................................................................................... 29

10.2 Preparation of samples and test pieces ................................................................................................ 30

10.2.1 Selection and preparation of samples for product analysis.......................................................... 30

10.2.2 Location, orientation and preparation of samples and test pieces for mechanical

tests .................................................................................................................................................................... 30

11 Verification test methods .......................................................................................................................... 32

11.1 Chemical analysis ......................................................................................................................................... 32

11.2 Tensile test on the base material ............................................................................................................ 32

11.2.1 At room temperature .................................................................................................................................. 32

11.2.2 At elevated temperature ............................................................................................................................ 32

11.3 Transverse tensile test on the weld ....................................................................................................... 32

11.4 Technological tests ....................................................................................................................................... 32

11.4.1 General ............................................................................................................................................................. 32

11.4.2 Flattening test ................................................................................................................................................ 33

11.4.3 Ring tensile test ............................................................................................................................................. 33

11.4.4 Drift expanding test ..................................................................................................................................... 33

11.4.5 Ring expanding test ..................................................................................................................................... 34

11.5 Weld bend test ............................................................................................................................................... 34

11.6 Impact test ....................................................................................................................................................... 34

11.7 Intergranular corrosion test..................................................................................................................... 35

11.8 Leak tightness test ........................................................................................................................................ 35

11.8.1 Hydrostatic test ............................................................................................................................................. 35

11.8.2 Eddy current test .......................................................................................................................................... 35

11.9 Dimensional inspection .............................................................................................................................. 36

11.10 Visual examination ...................................................................................................................................... 36

11.11 Non-destructive testing .............................................................................................................................. 36

11.12 Material identification ................................................................................................................................ 37

11.13 Retests, sorting and reprocessing .......................................................................................................... 37

12 Marking ............................................................................................................................................................ 37

12.1 Marking to be applied ................................................................................................................................. 37

12.2 Additional marking ...................................................................................................................................... 37

13 Handling and packaging ............................................................................................................................. 38

Annex A (informative) Technical changes from the previous edition ...................................................... 39

A.1 Introduction.................................................................................................................................................... 39

A.2 Technical changes ........................................................................................................................................ 39

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of Directive 2014/68/EU aimed to be covered..................................................... 41

Bibliography ................................................................................................................................................................. 42

---------------------- Page: 5 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)
European foreword

This document (EN 10217-7:2021) has been prepared by Technical Committee CEN/TC 459/SC 10

“Steel tubes and iron and steel fittings”, 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 or by endorsement, at the latest by October 2021, and conflicting national standards shall

be withdrawn at the latest by October 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 10217-7:2014.
The main changes with respect to the previous edition are listed in Annex A.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive 2014/68/EU.

For relationship with EU Directive 2014/68/EU, see informative Annex ZA, which is an integral part of

this document.

EN 10217 consists of the following parts, under the general title Welded steel tubes for pressure

purposes — Technical delivery conditions:

— Part 1: Electric welded and submerged arc welded 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: Electric welded and submerged arc welded alloy fine grain steel tubes with specified room,

elevated and low temperature properties;

— Part 4: Electric welded non-alloy and 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 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties;

— Part 7: Stainless steel tubes.
Another European Standard series covering tubes for pressure purposes is:
EN 10216, Seamless steel tubes for pressure purposes.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
---------------------- Page: 6 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)
1 Scope

This document specifies the technical delivery conditions in two test categories for welded tubes of

circular cross-section made of austenitic and austenitic-ferritic stainless steel which are intended for

pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated

temperatures.

NOTE Once the reference of this document is published in the Official Journal of the European Union (OJEU)

under Directive 2014/68/EU, pressure equipment directive, presumption of conformity to the Essential Safety

Requirements (ESR) of Directive 2014/68/EU is limited to technical data of materials in this document and does

not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the

technical data stated in this material standard against the design requirements of this specific item of equipment

to verify that the ESRs of the Pressure Equipment Directive are satisfied, needs to be done by the designer of the

pressure equipment, taking also into account the subsequent manufacturing processes which could affect

properties of the base materials.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 10020:2000, Definition and classification of grades of steel
EN 10021:2006, General technical delivery conditions for steel products
EN 10027-1:2016, Designation systems for steels - Part 1: Steel names
EN 10027-2:2015, Designation systems for steels - Part 2: Numerical system

EN 10028-7:2016, Flat products made of steels for pressure purposes - Part 7: Stainless steels

EN 10088-1:2014, Stainless steels - Part 1: List of stainless steels

EN 10168:2004, Steel products - Inspection documents - List of information and description

EN 10204:2004, Metallic products - Types of inspection documents

EN 10266:2003, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for

use in product standards

CEN/TR 10261:2018, Iron and steel - European standards for the determination of chemical composition

EN ISO 148-1:2016, Metallic materials - Charpy pendulum impact test - Part 1: Test method (ISO 148-

1:2016)

EN ISO 377:2017, Steel and steel products - Location and preparation of samples and test pieces for

mechanical testing (ISO 377:2017)

EN ISO 1127:1996, Stainless steel tubes - Dimensions, tolerances and conventional masses per unit length

(ISO 1127:1992)

EN ISO 2566-2:1999, Steel - Conversion of elongation values - Part 2: Austenitic steels (ISO 2566-2:1984)

---------------------- Page: 7 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)

EN ISO 3651-2:1998, Determination of resistance to intergranular corrosion of stainless steels - Part 2:

Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in media containing

sulfuric acid (ISO 3651-2:1998)

EN ISO 4885:2018, Ferrous materials - Heat treatments - Vocabulary (ISO 4885:2018)

EN ISO 5173:2010, Destructive tests on welds in metallic materials - Bend tests (ISO 5173:2009)

EN ISO 6892-1:2019, Metallic materials - Tensile testing - Part 1: Method of test at room temperature

(ISO 6892-1:2019)

EN ISO 6892-2:2018, Metallic materials - Tensile testing - Part 2: Method of test at elevated temperature

(ISO 6892-2:2018)
EN ISO 8492:2013, Metallic materials - Tube - Flattening test (ISO 8492:2013)

EN ISO 8493:2004, Metallic materials - Tube - Drift-expanding test (ISO 8493:1998)

EN ISO 8495:2013, Metallic materials - Tube - Ring-expanding test (ISO 8495:2013)

EN ISO 8496:2013, Metallic materials - Tube - Ring tensile test (ISO 8496:2013)

EN ISO 9712:2012, Non-destructive testing - Qualification and certification of NDT personnel

(ISO 9712:2012)

EN ISO 10893-1:2011, Non-destructive testing of steel tubes - Part 1: Automated electromagnetic testing

of seamless and welded (except submerged arc-welded) steel tubes for the verification of hydraulic

leaktightness (ISO 10893-1:2011)

EN ISO 10893-2:2011, Non-destructive testing of steel tubes - Part 2: Automated eddy current testing of

seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections

(ISO 10893-2:2011)

EN ISO 10893-6:2019, Non-destructive testing of steel tubes - Part 6: Radiographic testing of the weld

seam of welded steel tubes for the detection of imperfections (ISO 10893-6:2019)

EN ISO 10893-7:2019, Non-destructive testing of steel tubes - Part 7: Digital radiographic testing of the

weld seam of welded steel tubes for the detection of imperfections (ISO 10893-7:2019)

EN ISO 10893-8:2011, Non-destructive testing of steel tubes - Part 8: Automated ultrasonic testing of

seamless and welded steel tubes for the detection of laminar imperfections (ISO 10893-8:2011)

EN ISO 10893-9:2011, Non-destructive testing of steel tubes - Part 9: Automated ultrasonic testing for

the detection of laminar imperfections in strip/plate used for the manufacture of welded steel tubes

(ISO 10893-9:2011)
As impacted by EN ISO 10893-1:2011/A1:2020.
As impacted by EN ISO 10893-2:2011/A1:2020.
As impacted by EN ISO 10893-8:2011/A1:2020.
As impacted by EN ISO 10893-9:2011/A1:2020.
---------------------- Page: 8 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)

EN ISO 10893-10:2011, Non-destructive testing of steel tubes - Part 10: Automated full peripheral

ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of

longitudinal and/or transverse imperfections (ISO 10893-10:2011)

EN ISO 10893-11:2011, Non-destructive testing of steel tubes - Part 11: Automated ultrasonic testing of

the weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections

(ISO 10893-11:2011)

EN ISO 14284:2002, Steel and iron - Sampling and preparation of samples for the determination of

chemical composition (ISO 14284:1996)

ISO 11484:2019, Steel products — Employer's qualification system for non-destructive testing (NDT)

personnel
3 Terms and definitions

For the purpose of this document, the terms and definitions given in EN 10020:2000, EN 10021:2006,

EN ISO 4885:2018 and EN 10266:2003 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
test category
classification that indicates the extent and level of inspection and testing
3.2
employer
organization for which a person works on a regular basis

Note 1 to entry: The employer may be either the tube manufacturer or supplier or a third party organization

providing non-destructive testing (NDT) services.
4 Symbols

For the purpose of this document, the symbols given in EN 10266:2003 and the following apply.

— TC test category.
NOTE See also Table 2 for symbols of the delivery condition.
5 Classification and designation
5.1 Classification

According to the classification system in EN 10020:2000, the steel grades are classified as:

— austenitic steels (corrosion resisting);
As impacted by EN ISO 10893-10:2011/A1:2020.
As impacted by EN ISO 10893-11:2011/A1:2020.
---------------------- Page: 9 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)
— austenitic-ferritic steels.
5.2 Designation
For the tubes covered by this document the steel designation consists of:
— the number of this document (EN 10217-7);
plus either:
— the steel name according to EN 10027-1:2016;
or:
— the steel number allocated according to EN 10027-2:2015.
6 Information to be supplied by the purchaser
6.1 Mandatory information

The 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 8.8.1);
d) the designation of the steel grade according to this document (see 5.2);
e) the test category (see 9.3).
6.2 Options

A number of options are specified in this document and these are listed below. In the event that the

purchaser does not indicate a wish to implement any of these options at the time of enquiry and order,

the tube shall be supplied in accordance with the basic specification (see 6.1).
1) Information about steelmaking process (see 7.1);
2) Tube manufacturing process and/or route (see 7.2.1);
3) The inside weld is remelted (see Table 1);
4) The inside weld is worked by rolling, remelting or grinding (see Table 1);
5) Delivery condition (see 7.2.3);
6) Product analysis (see 8.2.2);

7) Additional verifications of mechanical properties on samples that have undergone a different or

additional heat treatment (see 8.3.1);
8) Verification of impact energy at room temperature (see 8.3.1);
9) Verification of proof strength R or R at elevated temperatures (see 8.3.2);
p0,2 p1,0
---------------------- Page: 10 ----------------------
SIST EN 10217-7:2021
EN 10217-7:2021 (E)
10) Verification of impact energy at low temperature (see 8.3.3);
11) Intergranular corrosion test (see 8.4);
12) Repair welding (see 8.5.1.5);

13) Selection of method for verification of leak-tightness test method (see 8.5.2.2);

14) Non-destructive testing of tube ends for detection of laminar imperfections (see 8.5.2.3);

15) Non-destructive testing of strip and plate edges for detection of laminar imperfections (see 8.5.2.3);

16) Special ends preparation (see 8.7);
17) Exact lengths (see 8.8.3);
18) Tolerance class D 4 for D ≤ 168,3 mm (see Table 10);

19) The type of inspection certificate 3.2 in place of the standard document (see 9.2.1);

20) Transverse tensile test on the weld (see 10.2.2.3);
21) Test pressure for hydrostatic leak-tightness test (see 11.8.1);
22) Wall thickness measurement away from the ends (see 11.9);

23) Selection of non- destructive testing method for the inspection of the weld seam (see Table 16);

24) Image quality class B of EN ISO 10893-6 for the radiographic inspection of the weld seam (see

Table 16);
25) Additional marking (see 12.2);
26) Special protection (see Clause 13);

27) Image quality class B of EN ISO 10893-7 for the digital radiographic testing of the weld (see

Table 16);

28) Different values for the maximum height of the weld seam are to be agreed in the purchas

...

SLOVENSKI STANDARD
oSIST prEN 10217-7:2019
01-maj-2019

9DUMHQHMHNOHQHFHYL]DWODþQHSRVRGH7HKQLþQLGREDYQLSRJRMLGHO&HYLL]

QHUMDYQHJDMHNOD

Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7:

Stainless steel tubes
Geschweißte Stahlrohre für Druckbeanspruchungen - Technische Lieferbedingungen -
Teil 7: Rohre aus nichtrostenden Stählen

Tubes soudés en acier pour service sous pression - Conditions techniques de livraison -

Partie 7 : Tubes en aciers inoxydables
Ta slovenski standard je istoveten z: prEN 10217-7
ICS:
23.020.32 7ODþQHSRVRGH Pressure vessels
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
oSIST prEN 10217-7:2019 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 10217-7:2019
---------------------- Page: 2 ----------------------
oSIST prEN 10217-7:2019
DRAFT
EUROPEAN STANDARD
prEN 10217-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2019
ICS 23.040.10; 77.140.75 Will supersede EN 10217-7:2014
English Version
Welded steel tubes for pressure purposes - Technical
delivery conditions - Part 7: Stainless steel tubes

Tubes soudés en acier pour service sous pression - Geschweißte Stahlrohre für Druckbeanspruchungen -

Conditions techniques de livraison - Partie 7 : Tubes en Technische Lieferbedingungen - Teil 7: Rohre aus

aciers inoxydables nichtrostenden Stählen

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 459/SC 10.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10217-7:2019 E

worldwide for CEN national Members.
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Contents Page

European foreword ....................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 7

4 Symbols ............................................................................................................................................................... 7

5 Classification and designation .................................................................................................................... 7

5.1 Classification ..................................................................................................................................................... 7

5.2 Designation........................................................................................................................................................ 7

6 Information to be supplied by the purchaser ....................................................................................... 8

6.1 Mandatory information ................................................................................................................................ 8

6.2 Options ................................................................................................................................................................ 8

6.3 Examples of an order ..................................................................................................................................... 9

6.3.1 Example 1 ........................................................................................................................................................... 9

6.3.2 Example 2 ........................................................................................................................................................... 9

7 Manufacturing process ............................................................................................................................... 10

7.1 Steelmaking process ................................................................................................................................... 10

7.2 Tube manufacture and conditions ......................................................................................................... 10

8 Requirements ................................................................................................................................................ 12

8.1 General ............................................................................................................................................................. 12

8.2 Chemical composition ................................................................................................................................ 13

8.2.1 Cast analysis ................................................................................................................................................... 13

8.2.2 Product analysis ........................................................................................................................................... 13

8.3 Mechanical properties ................................................................................................................................ 16

8.3.1 At room temperature .................................................................................................................................. 16

8.3.2 At elevated temperature ........................................................................................................................... 17

8.3.3 At low temperature ..................................................................................................................................... 17

8.4 Corrosion resistance ................................................................................................................................... 23

8.5 Appearance and internal soundness..................................................................................................... 23

8.5.1 Appearance ..................................................................................................................................................... 23

8.5.2 Internal soundness ...................................................................................................................................... 24

8.6 Straightness .................................................................................................................................................... 24

8.7 Preparation of ends ..................................................................................................................................... 24

8.8 Dimensions, masses and tolerances ...................................................................................................... 25

8.8.1 Outside diameter and wall thickness .................................................................................................... 25

8.8.2 Mass ................................................................................................................................................................... 25

8.8.3 Lengths ............................................................................................................................................................. 25

8.8.4 Tolerances ...................................................................................................................................................... 25

9 Inspection ....................................................................................................................................................... 27

9.1 Type of inspection ........................................................................................................................................ 27

9.2 Inspection documents ................................................................................................................................ 27

9.2.1 Types of inspection documents............................................................................................................... 27

9.2.2 Content of inspection documents ........................................................................................................... 28

9.3 Summary of inspection and verification testing ............................................................................... 28

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10 Sampling .......................................................................................................................................................... 29

10.1 Test unit ........................................................................................................................................................... 29

10.2 Preparation of samples and test pieces ................................................................................................ 30

10.2.1 Selection and preparation of samples for product analysis.......................................................... 30

10.2.2 Location, orientation and preparation of samples and test pieces for mechanical

tests .................................................................................................................................................................... 30

11 Verification test methods .......................................................................................................................... 31

11.1 Chemical analysis ......................................................................................................................................... 31

11.2 Tensile test on the base material ............................................................................................................ 32

11.2.1 At room temperature .................................................................................................................................. 32

11.2.2 At elevated temperature ............................................................................................................................ 32

11.3 Transverse tensile test on the weld ....................................................................................................... 32

11.4 Technological tests ....................................................................................................................................... 32

11.4.1 General ............................................................................................................................................................. 32

11.4.2 Flattening test ................................................................................................................................................ 33

11.4.3 Ring tensile test ............................................................................................................................................. 33

11.4.4 Drift expanding test ..................................................................................................................................... 33

11.4.5 Ring expanding test ..................................................................................................................................... 34

11.5 Weld bend test ............................................................................................................................................... 34

11.6 Impact test ....................................................................................................................................................... 34

11.7 Intergranular corrosion test..................................................................................................................... 35

11.8 Leak tightness test ........................................................................................................................................ 35

11.8.1 Hydrostatic test ............................................................................................................................................. 35

11.8.2 Eddy current test .......................................................................................................................................... 35

11.9 Dimensional inspection .............................................................................................................................. 36

11.10 Visual examination ...................................................................................................................................... 36

11.11 Non-destructive testing .............................................................................................................................. 36

11.12 Material identification ................................................................................................................................ 37

11.13 Retests, sorting and reprocessing .......................................................................................................... 37

12 Marking ............................................................................................................................................................ 37

12.1 Marking to be applied ................................................................................................................................. 37

12.2 Additional marking ...................................................................................................................................... 38

13 Handling and packaging ............................................................................................................................. 38

Annex A (informative) Technical changes from the previous edition ...................................................... 39

A.1 Introduction.................................................................................................................................................... 39

A.2 Technical changes ........................................................................................................................................ 39

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of Directive 2014/68/EU aimed to be covered..................................................... 41

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European foreword

This document (prEN 10217-7:2019) has been prepared by Technical Committee ECISS/TC 110 “Steel

tubes and iron and steel fittings”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document supersedes EN 10217-7:2014.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive 2014/68/EU.

For relationship with EU Directive 2014/68/EU (formerly 97/23/EC), see informative Annex ZA, which

is an integral part of this document.

This European Standard consists of the following parts, under the general title Welded steel tubes for

pressure purposes — Technical delivery conditions:

— Part 1: Electric welded and submerged arc welded 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: Electric welded and submerged arc welded alloy fine grain steel tubes with specified room,

elevated and low temperature properties

— Part 4: Electric welded non-alloy and 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 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties

— Part 7: Stainless steel tubes
Another European Standard series covering tubes for pressure purposes is:
EN 10216, Seamless steel tubes for pressure purposes.
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1 Scope

This Part of EN 10217 specifies the technical delivery conditions in two test categories for welded tubes

of circular cross-section made of austenitic and austenitic-ferritic stainless steel which are intended for

pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated

temperatures.

NOTE Once this document is published in the Official Journal of the European Union (OJEU) under Directive

2014/68/EU, pressure equipment directive, presumption of conformity to the Essential Safety Requirements

(ESR) of Directive 2014/68/EU is limited to technical data of materials in this standard and does not presume

adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical data stated

in this material standard against the design requirements of this specific item of equipment to verify that the ESRs

of the Pressure Equipment Directive are satisfied, needs to be done by the designer or manufacturer of the

pressure equipment, taking also into account the subsequent manufacturing processes which may affect

properties of the base materials.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 10020:2000, Definition and classification of grades of steel
EN 10021:2006, General technical delivery conditions for steel products
EN 10027-1, Designation systems for steels — Part 1: Steel names
EN 10027-2, Designation systems for steels — Part 2: Numerical system

EN 10028-7:2016, Flat products made of steels for pressure purposes — Part 7: Stainless steels

EN 10088-1, Stainless steels — Part 1: List of stainless steels

EN 10168:2004, Steel products — Inspection documents - List of information and description

EN 10204:2004, Metallic products — Types of inspection documents

EN 10266, Steel tubes, fittings and structural hollow sections — Symbols and definitions of terms for use in

product standards

CEN/TR 10261, Iron and steel — European standards for the determination of chemical composition

EN ISO 148-1:2016, Metallic materials — Charpy pendulum impact test — Part 1: Test method

(ISO 148-1:2016)

EN ISO 377:2017, Steel and steel products — Location and preparation of samples and test pieces for

mechanical testing (ISO 377:2017)

EN ISO 1127, Stainless steel tubes — Dimensions, tolerances and conventional masses per unit length

(ISO 1127)

EN ISO 2566-2, Steel — Conversion of elongation values — Part 2: Austenitic steels (ISO 2566-2)

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EN ISO 3651-2:1998, Determination of resistance to intergranular corrosion of stainless steels — Part 2:

Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing

sulfuric acid (ISO 3651-2:1998)
EN ISO 4885, Ferrous materials — Heat treatments — Vocabulary (ISO 4885)

EN ISO 5173:2010, Destructive tests on welds in metallic materials — Bend tests (ISO 5173:2009)

EN ISO 6892-1:2016, Metallic materials — Tensile testing — Part 1: Method of test at room temperature

(ISO 6892-1:2016)

EN ISO 6892-2:2018, Metallic materials — Tensile testing — Part 2: Method of test at elevated

temperature (ISO 6892-2:2018)
EN ISO 8492:2013, Metallic materials — Tube — Flattening test (ISO 8492:2013)

EN ISO 8493:2004, Metallic materials — Tube — Drift-expanding test (ISO 8493:1998)

EN ISO 8495:2013, Metallic materials — Tube — Ring-expanding test (ISO 8495:2013)

EN ISO 8496:2013, Metallic materials — Tube — Ring tensile test (ISO 8496:2013)

EN ISO 9712:2012, Non-destructive testing — Qualification and certification of NDT personnel

(ISO 9712:2012)

EN ISO 10893-1, Non-destructive testing of steel tubes — Part 1: Automated electromagnetic testing of

seamless and welded (except submerged arc-welded) steel tubes for the verification of hydraulic

leaktightness (ISO 10893-1)

EN ISO 10893-2, Non-destructive testing of steel tubes — Part 2: Automated eddy current testing of

seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections

(ISO 10893-2)

EN ISO 10893-6, Non-destructive testing of steel tubes — Part 6: Radiographic testing of the weld seam of

welded steel tubes for the detection of imperfections (ISO 10893-6)

EN ISO 10893-7, Non-destructive testing of steel tubes — Part 7: Digital radiographic testing of the weld

seam of welded steel tubes for the detection of imperfections (ISO 10893-7)

EN ISO 10893-8, Non-destructive testing of steel tubes — Part 8: Automated ultrasonic testing of seamless

and welded steel tubes for the detection of laminar imperfections (ISO 10893-8)

EN ISO 10893-9, Non-destructive testing of steel tubes — Part 9: Automated ultrasonic testing for the

detection of laminar imperfections in strip/plate used for the manufacture of welded steel tubes

(ISO 10893-9)

EN ISO 10893-10, Non-destructive testing of steel tubes — Part 10: Automated full peripheral ultrasonic

testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal

and/or transverse imperfections (ISO 10893-10)

EN ISO 10893-11, Non-destructive testing of steel tubes — Part 11: Automated ultrasonic testing of the

weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections

(ISO 10893-11)
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EN ISO 14284:2002, Steel and iron — Sampling and preparation of samples for the determination of

chemical composition (ISO 14284:1996)

ISO 11484:2009, Steel products — Employer's qualification system for non-destructive testing (NDT)

personnel

ISO/TR 25901-3:2016, Welding and allied processes — Vocabulary — Part 3: Welding processes

3 Terms and definitions

For the purpose of this document, the terms and definitions given in EN 10020, EN 10021, EN ISO 4885

and EN 10266 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
test category
classification that indicates the extent and level of inspection and testing
3.2
employer
organization for which a person works on a regular basis

Note 1 to entry: The employer may be either the tube manufacturer or supplier or a third party organization

providing Non- Destructive Testing (NDT) services.
4 Symbols

For the purpose of this document, the symbols given in EN 10266 and the following apply.

— TC test category.
NOTE See also Table 2 for symbols of the delivery condition.
5 Classification and designation
5.1 Classification

According to the classification system in EN 10020, the steel grades are classified as:

— austenitic steels (corrosion resisting);
— austenitic-ferritic steels.
5.2 Designation

For the tubes covered by this Part of EN 10217 the steel designation consists of:

— the number of this Part of EN 10217 (EN 10217-7);
plus either:
— the steel name according to EN 10027-1;
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or:
— the steel number allocated according to EN 10027-2.
6 Information to be supplied by the purchaser
6.1 Mandatory information

The 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 8.8.1);

d) the designation of the steel grade according to this Part of EN 10217 (see 5.2);

e) the test category (see 9.3).
6.2 Options

A number of options are specified in this Part of EN 10217 and these are listed below. In the event that

the purchaser does not indicate a wish to implement any of these options at the time of enquiry and

order, the tube shall be supplied in accordance with the basic specification (see 6.1).

1) Information about steelmaking process (see 7.1);
2) Tube manufacturing process and/or route (see 7.2.1);
3) The inside weld is remelted (see Table 1);
4) The inside weld is worked by rolling, remelting or grinding (see Table 1);
5) Delivery condition (see 7.2.3);
6) Product analysis (see 8.2.2);

7) Additional verifications of mechanical properties on samples that have undergone a different or

additional heat treatment (see 8.3.1);
8) Verification of impact energy at room temperature (see 8.3.1);
9) Verification of proof strength R or R at elevated temperatures (see 8.3.2);
p0,2 p1,0
10) Verification of impact energy at low temperature (see 8.3.3);
11) Intergranular corrosion test (see 8.4);
12) Repair welding (see 8.5.1.5);

13) Selection of method for verification of leak-tightness test method (see 8.5.2.2);

14) Non-destructive testing of tube ends for detection of laminar imperfections (see 8.5.2.3);

15) Non-destructive testing of strip and plate edges for detection of laminar imperfections (see 8.5.2.3);

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16) Special ends preparation (see 8.7);
17) Exact lengths (see 8.8.3);
18) Tolerance class D 4 for D ≤ 168,3 mm (see Table 10);

19) The type of inspection certificate 3.2 in place of the standard document (see 9.2.1);

20) Transverse tensile test on the weld (see 10.2.2.3);
21) Test pressure for hydrostatic leak-tightness test (see 11.8.1);
22) Wall thickness measurement away from the ends (see 11.9);

23) Selection of non- destructive testing method for the inspection of the weld seam (see Table 16);

24) Image quality class B of EN ISO 10893-6 for the radiographic inspection of the weld seam (see

Table 16);
25) Additional marking (see 12.2);
26) Special protection (see Clause 13);

27) Image quality class B of EN ISO 10893-7 for the digital radiographic testing of the weld (see

Table 16);

28) Different values for the maximum height of the weld seam are to be agreed in the purchase order

(see Table 11);

29) Height of the weld seam for tubes with route 01, 05, 06 and 07 (according to Table 1) and with

thicknesses over 8 mm: maximum 4 mm (see Table 11).
6.3 Examples of an order
6.3.1 Example 1

2 000 m of welded tube W1 (see Table 2) with an outside diameter of 168,3 mm, a wall thickness of

4,5 mm, tolerance classes D 3 and T 3, in accordance with this Part of EN 10217, made of steel grade

X2CrNi19-11, test category 1, with a 3.1 inspection certificate according to EN 10204:

EXAMPLE 2 000 m - Tube - 168,3 × 4,5 - EN 10217-7- X2CrNi19–11 - TC 1 - Option 5: W1

6.3.2 Example 2

300 m of cold finished welded tube WCA (see Table 2) with an outside diameter of 42,4 mm, a wall

thickness of 2,6 mm, tolerance classes D 3 and T 3, in accordance with this Part of EN 10217, made of

steel grade 1.4301, test category 2, with intergranular corrosion test (EN ISO 3651-2, method A),

verification of proof strength at 300 °C, non-destructive testing of strip edges for detection of laminar

imperfections, with a 3.2 inspection certificate according to EN 10204 issued by the manufacturer:

EXAMPLE 300 m - Tube - 42,4 × 2,6 - EN 10217-7 - 1.4301 - TC 2 - Option 5: WCA - Option 9: 300 °C - Option

11: A - Opti
...

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