SIST EN 10217-7:2021

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

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oSIST prEN 10217-7:2019

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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
...