SIST EN 10225-3:2019
(Main)Weldable structural steels for fixed offshore structures - Technical delivery conditions - Part 3: Hot finished hollow sections
Weldable structural steels for fixed offshore structures - Technical delivery conditions - Part 3: Hot finished hollow sections
This part of EN 10225 specifies requirements for weldable structural steels made of hot finished seamless and high frequency welded hollow sections to be used in the fabrication of fixed offshore structures.
Following thickness limitations are given in this standard:
- for seamless hollow sections up to and including 65 mm;
- for HFW hollow sections up to and including 25,4 mm.
Greater thicknesses may be agreed, provided the technical requirements of this European Standard are maintained.
The standard is applicable to steels for offshore structures, designed to operate in the offshore sector but not to steels supplied for the fabrication of subsea pipelines, risers, process equipment, process piping and other utilities. It is primarily applicable to the North Sea Sector, but may also be applicable in other areas provided that due consideration is given to local conditions e. g. temperature.
NOTE There is an Annex G on the prequalification of steels for fixed offshore structures in arctic areas.
Minimum yield strengths up to 770 MPa are specified together with low temperature impact properties at temperatures down to -40 °C.
Schweißgeeignete Baustähle für feststehende Offshore-Konstruktionen - Technische Lieferbedingungen - Teil 3: Warmgefertigte Hohlprofile
Dieser Teil der EN 10225 legt die Anforderungen an warmgefertigte nahtlose und HFW Hohlprofilen aus schweißgeeignete Baustähle fest, die zur Herstellung von feststehenden Offsore-Konstruktionen verwendet werden.
Folgende Dickenbeschränkungen werden in dieser Norm angegeben:
- Für nahtlose Hohlprofile bis zu 65 mm,
- Für HFW Hohlprofile bis zu 25,4 mm.
Größere Dicken können vereinbart werden, vorausgesetzt die technischen Lieferbedingungen dieser Europäischen Norm werden eingehalten.
Diese Norm gilt für Stähle für Offshore-Konstruktionen, die für den Offshore-Einsatz vorgesehen sind, jedoch nicht für Stähle zur Herstellung von Unterwasserpipelines, Steigleitungen (risers), Verfahrens-Ausrüstungen, Rohrsystemen und anderen Einrichtungen und Ausrüstungen. Sie gilt in erster Linie für den Bereich der Nordsee, kann jedoch auch für andere Gebiete angewendet werden, vorausgesetzt, dass die örtlichen Bedingungen, z. B. die Temperatur, genügend berücksichtigt werden.
ANMERKUNG Im Anhang G sind Vorprüfungen von Stählen für den arktischen Einsatz bei Offshore Konstruktionen angegeben.
Mindestwerte der Streckgrenze bis zu 770 MPa werden zusammen mit Werten für die Kerbschlagarbeit bis herunter zu Temperaturen von -40 °C angegeben.
Aciers de construction soudables destinés à la fabrication de structures marines fixes - Conditions techniques de livraison - Partie 3 : Profils creux finis à chaud
Le présent document spécifie les exigences applicables aux aciers de construction soudables fabriqués à
partir de profils creux sans soudure finis à chaud et de profils creux soudés par haute fréquence destinés
à la fabrication de structures marines fixes.
Pour cette norme, les limites d’épaisseur suivantes sont données :
- pour des profils creux sans soudure jusqu’à 65 mm inclus ;
- pour des profils creux soudés par haute fréquence jusqu’à 25,4 mm inclus.
Des épaisseurs plus importantes peuvent être convenues par accord, à condition que les exigences
techniques de la présente Norme européenne soient respectées.
Cette norme européenne s'applique aux aciers pour constructions marines exploitées sur le domaine
maritime européen, à l'exclusion des aciers fournis pour réaliser des oléoducs sous‐marins, conduites
montantes, équipement de procédés et autres tuyauteries de transport. Elle s'applique prioritairement
au secteur de la mer du Nord mais elle peut également s'appliquer dans d'autres zones dans la mesure
où les conditions locales sont dûment prises en compte, notamment la température de conception.
NOTE Le présent document contient une Annexe E informative pour la présélection des aciers destinés à la
construction de structures marines fixes dans les zones arctiques.
La norme spécifie les limites d’élasticité jusqu’à 770 MPa et les énergies de rupture en flexion par choc à
des températures jusqu’à – 40 °C.
Konstrukcijska jekla za varjene konstrukcije naftnih ploščadi - Tehnični dobavni pogoji - 3. del: Vroče izdelani votli profili
Ta del standarda EN 10225 določa zahteve za variva konstrukcijska jekla iz vroče izdelanih nevarjenih in visokofrekvenčno varjenih votlih profilov, ki se uporabljajo za izdelavo konstrukcij naftnih ploščadi.
V tem standardu so podane naslednje omejitve debeline:
– za nevarjene votle profile do vključno 65 mm;
– za visokofrekvenčno varjene votle profile do vključno 25,4 mm.
Dogovori za večje debeline so mogoči, če se ohranijo tehnične zahteve tega evropskega standarda.
Standard velja za jekla za konstrukcije naftnih ploščadi, projektirane za delovanje v priobalnem območju, vendar ne za jekla, dobavljena za izdelavo podmorskih cevovodov, dvižnih cevi, procesne opreme, procesnih cevovodov in drugih sredstev. Uporablja se predvsem na območju Severnega morja, lahko pa se uporablja tudi na drugih območjih, če se ustrezno upoštevajo lokalni pogoji, npr. temperatura.
OPOMBA: Na voljo je dodatek G o predizbiri jekel za konstrukcije naftnih ploščadi v arktičnih območjih.
Minimalne napetosti tečenja do 770 MPa so določene skupaj z nizkotemperaturnimi lastnostmi pri temperaturah do –40 °C.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 10225-3:2019
01-julij-2019
Nadomešča:
SIST EN 10225:2009
Konstrukcijska jekla za varjene konstrukcije naftnih ploščadi - Tehnični dobavni
pogoji - 3. del: Vroče izdelani votli profili
Weldable structural steels for fixed offshore structures - Technical delivery conditions -
Part 3: Hot finished hollow sections
Schweißgeeignete Baustähle für feststehende Offshore-Konstruktionen - Technische
Lieferbedingungen - Teil 3: Warmgefertigte Hohlprofile
Aciers de construction soudables destinés à la fabrication de structures marines fixes -
Conditions techniques de livraison - Partie 3 : Profils creux finis à chaud
Ta slovenski standard je istoveten z: EN 10225-3:2019
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.70 Jekleni profili Steel profiles
SIST EN 10225-3:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 10225-3:2019
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SIST EN 10225-3:2019
EN 10225-3
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 77.140.10 Supersedes EN 10225:2009
English Version
Weldable structural steels for fixed offshore structures -
Technical delivery conditions - Part 3: Hot finished hollow
sections
Aciers de construction soudables destinés à la Schweißgeeignete Baustähle für feststehende Offshore-
fabrication de structures marines fixes - Conditions Konstruktionen - Technische Lieferbedingungen - Teil
techniques de livraison - Partie 3 : Profils creux finis à 3: Warmgefertigte Hohlprofile
chaud
This European Standard was approved by CEN on 23 December 2018.
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
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. EN 10225-3:2019 E
worldwide for CEN national Members.
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SIST EN 10225-3:2019
EN 10225-3:2019 (E)
Contents Page
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Classification and designation . 10
4.1 Classification . 10
4.2 Designation . 10
5 Information to be supplied by the purchaser . 11
5.1 Mandatory information . 11
5.2 Options . 11
5.3 Example of an order . 11
6 Manufacturing process . 11
6.1 Steel manufacturing process . 11
6.2 Structural hollow section manufacturing process . 12
6.3 Qualification of personnel for NDT activities . 12
6.4 Delivery condition . 12
7 Requirements . 12
7.1 General . 12
7.2 Chemical composition . 12
7.2.1 Heat analysis . 12
7.2.2 Product analysis . 13
7.2.3 Carbon equivalent values (CEV) and P . 13
cm
7.3 Mechanical properties . 13
7.3.1 General . 13
7.3.2 Post weld heat treatment (PWHT) . 13
7.3.3 Through thickness testing . 13
7.3.4 Flattening test . 13
7.3.5 Prequalification for arctic areas . 13
7.4 Weldability data . 14
7.5 Internal soundness and non-destructive testing . 14
7.5.1 Non-destructive testing of the weld seam of HFW hollow sections . 14
7.5.2 Non-destructive testing of seamless hollow sections for longitudinal imperfections . 14
7.5.3 Laminar discontinuities of hollow sections . 14
7.6 Surface quality . 15
7.7 Dimensions, tolerances, mass . 15
7.7.1 Dimensions and tolerances on dimensions and shape . 15
7.7.2 Mass of steel . 15
8 Inspection . 15
8.1 General . 15
8.2 Types of inspection documents . 15
8.3 Summary of inspections . 16
8.4 Intermediary supply . 17
9 Frequency of testing and preparation of samples and test pieces . 17
9.1 Frequency of test . 17
2
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SIST EN 10225-3:2019
EN 10225-3:2019 (E)
9.1.1 Chemical analysis . 17
9.1.2 Tensile test and impact test . 17
9.1.3 Testing the weld seam of welded hollow sections . 17
9.1.4 Testing of the corner regions for rectangular hollow sections . 17
9.2 Selection and preparation of samples for product analysis. 18
9.3 Location of samples and orientation of tensile test pieces . 18
9.4 Location of samples and orientation of impact test pieces . 18
9.5 Preparation of test pieces for mechanical tests. 18
9.5.1 General . 18
9.5.2 Preparation of tensile test pieces . 19
9.5.3 Preparation of impact test pieces . 19
10 Test methods . 19
10.1 Chemical analysis . 19
10.2 Mechanical tests . 20
10.2.1 Test temperatures . 20
10.2.2 Tensile test . 20
10.2.3 Impact test . 20
10.3 Visual inspection and dimensional check . 21
10.4 Non-destructive tests . 21
10.4.1 General . 21
10.4.2 NDT for the weld seam of HFW hollow sections . 21
10.4.3 Full peripheral NDT for seamless hollow sections . 21
10.4.4 Ultrasonic testing for laminar imperfections . 21
10.4.5 NDT for surface quality . 21
10.5 Retests, sorting and reprocessing . 21
11 Marking and bundling . 21
11.1 Die stamping and paint marking . 21
11.2 Bundling . 22
12 Options . 22
Annex A (normative when Option 1 is specified by the purchaser) Further details of steel
manufacturing procedures to be supplied by the manufacturer . 35
Annex B (normative when Option 17 is specified by the purchaser) Weldability testing and
mechanical testing of butt welds. 36
B.1 General requirements . 36
B.2 Welding processes and procedure . 36
B.3 Butt-weld requirements . 37
B.3.1 General . 37
B.3.2 Test piece dimensions. 37
B.3.3 Bevel detail . 38
B.3.4 Welding processes . 39
B.3.5 Nominal heat input. 39
B.3.6 Heat treatment . 39
B.3.7 Dehydrogenation of test pieces . 40
B.4 Mechanical testing . 40
B.4.1 General . 40
3
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SIST EN 10225-3:2019
EN 10225-3:2019 (E)
B.4.2 Charpy V-notch impact tests . 41
B.4.3 Fracture mechanic test . 42
B.4.4 Macrohardness . 43
B.4.5 Cross-weld tensile test . 44
Annex C (normative when Option 17 is specified by the purchaser) Weldability testing -
Bead-on-plate . 49
C.1 General . 49
C.2 Test material dimension . 49
C.3 Welding method . 49
C.4 Test condition . 49
C.5 Specific test requirements: macrosection and hardness tests . 50
Annex D (normative when Option 17 is specified by the purchaser) Weldability testing –
Controlled thermal severity tests (CTS) . 52
D.1 General . 52
D.2 Test block dimensions . 52
D.3 General welding details . 52
D.3.1 Anchor welds . 52
D.3.2 Test welds . 52
D.4 Evaluation of the test welds . 53
D.5 Hardness testing . 53
Annex E (informative) Prequalification of steels for offshore structures operating in arctic
areas . 59
Bibliography. 60
4
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SIST EN 10225-3:2019
EN 10225-3:2019 (E)
European foreword
This document (EN 10225-3:2019) has been prepared by Technical Committee CEN/TC 459 “ECISS -
1
European Committee for Iron and Steel Standardization” , the secretariat of which is held by AFNOR.
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 November 2019, and conflicting national standards
shall be withdrawn at the latest by November 2019.
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, together with EN 10225-1:2019, EN 10225-2:2019, and EN 10225-4:2019, supersedes
EN 10225:2009.
This European Standard consists of the following parts, under the general title 'Weldable structural
steels for fixed offshore structures – Technical delivery conditions':
— Part 1: Plates
— Part 2: Sections
— Part 3: Hot finished hollow sections
— Part 4: Cold formed welded hollow sections
In comparison to the previous edition following technical changes were made:
— split of the standard in four parts;
— the steel names were adapted to EN 10027-1;
— former grades of group 3 are no longer listed, new options with the same enhanced properties have
been introduced (Options 2 and 3);
— an informative Annex E was added for the prequalification of steels for fixed offshore structures in
arctic areas.
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, 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 the United Kingdom.
1
Through its subcommittee SC 3 “Structural steels other than reinforcements” (secretariat: DIN)
5
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SIST EN 10225-3:2019
EN 10225-3:2019 (E)
1 Scope
This document specifies requirements for weldable structural steels made of hot finished seamless and
high frequency welded hollow sections to be used in the fabrication of fixed offshore structures.
The following thickness limitations are given in this standard:
— for seamless hollow sections up to and including 65 mm;
— for HFW hollow sections up to and including 25,4 mm.
Greater thicknesses can be agreed, provided the technical requirements of this European Standard are
maintained.
This European Standard is applicable to steels for offshore structures, designed to operate in the
offshore sector but not to steels supplied for the fabrication of subsea pipelines, risers, process
equipment, process piping and other utilities. It is primarily applicable to the North Sea Sector, but may
also be applicable in other areas provided that due consideration is given to local conditions e.g. design
temperature.
NOTE This document has an informative Annex E on the prequalification of steels for fixed offshore
structures in arctic areas.
Minimum yield strengths up to 770 MPa are specified together with impact properties at temperatures
down to –40 °C.
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 1011-1, Welding — Recommendations for welding of metallic materials — Part 1: General guidance
for arc welding
EN 10020, Definition and classification of grades of steel
EN 10021, 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 10079, Definition of steel products
EN 10164, Steel products with improved deformation properties perpendicular to the surface of the
product — Technical delivery conditions
EN 10168, Steel products — Inspection documents — List of information and description
EN 10204, Metallic products — Types of inspection documents
EN 10210-2, Hot finished structural hollow sections of non-alloy and fine grain steels — Part 2:
Tolerances, dimensions and sectional properties
6
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SIST EN 10225-3:2019
EN 10225-3:2019 (E)
CEN/TR 10261, Iron and steel — European standards for the determination of chemical composition
EN ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method (ISO 148-1)
EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for
mechanical testing (ISO 377)
EN ISO 643, Steels — Micrographic determination of the apparent grain size (ISO 643)
EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels (ISO 2566-
1)
EN ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers (ISO
4063)
EN ISO 4136, Destructive tests on welds in metallic materials — Transverse tensile test (ISO 4136)
EN ISO 4885, Ferrous materials — Heat treatments — Vocabulary (ISO 4885)
EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1)
EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature (ISO
6892-1)
EN ISO 6947, Welding and allied processes — Welding positions (ISO 6947)
EN ISO 8492, Metallic materials — Tube — Flattening test (ISO 8492)
EN ISO 9712, Non-destructive testing — Qualification and certification of NDT personnel (ISO 9712)
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 10893-3, Non-destructive testing of steel tubes — Part 3: Automated full peripheral flux leakage
testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection
of longitudinal and/or transverse imperfections (ISO 10893-3)
EN ISO 10893-5, Non-destructive testing of steel tubes — Part 5: Magnetic particle inspection of seamless
and welded ferromagnetic steel tubes for the detection of surface imperfections (ISO 10893-5)
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)
7
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SIST EN 10225-3:2019
EN 10225-3:2019 (E)
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)
EN ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical
composition (ISO 14284)
EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials - Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO
15614-1)
ISO 11484, Steel products — Employer’s qualification system for non-destructive testing (NDT) personnel
ISO 12135, Metallic materials — Unified method of test for the determination of quasistatic fracture
toughness
ISO 15653, Metallic materials — Method of test for the determination of quasistatic fracture toughness of
welds
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10020, EN 10021,
EN ISO 4885, EN 10079 and EN ISO 14284 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
continuous casting process route (concast)
steel produced by a continuous casting process route
3.2
fine grain steel
steels with fine grain structure with an equivalent index of ferritic grain size ≥ 6
Note 1 to entry: For the determination of g
...
SLOVENSKI STANDARD
oSIST prEN 10225-3:2017
01-november-2017
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Weldable structural steels for fixed offshore structures - Technical delivery conditions -
Part 3: Hot finished hollow sections
Schweißgeeignete Baustähle für feststehende Offshore-Konstruktionen - Technische
Lieferbedingungen - Teil 3: Warmgefertigte Hohlprofile
Aciers de construction soudables destinés à la fabrication de structures marines fixes -
Conditions techniques de livraison - Partie 3 : Profils creux finis à chaud
Ta slovenski standard je istoveten z: prEN 10225-3
ICS:
77.140.10 Jekla za toplotno obdelavo Heat-treatable steels
77.140.70 Jekleni profili Steel profiles
oSIST prEN 10225-3:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 10225-3:2017
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oSIST prEN 10225-3:2017
DRAFT
EUROPEAN STANDARD
prEN 10225-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2017
ICS 77.140.10 Will supersede EN 10225:2009
English Version
Weldable structural steels for fixed offshore structures -
Technical delivery conditions - Part 3: Hot finished hollow
sections
Aciers de construction soudables destinés à la Schweißgeeignete Baustähle für feststehende Offshore-
fabrication de structures marines fixes - Conditions Konstruktionen - Technische Lieferbedingungen - Teil
techniques de livraison - Partie 3 : Profils creux finis à 3: Warmgefertigte Hohlprofile
chaud
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
ECISS/TC 103.
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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10225-3:2017 E
worldwide for CEN national Members.
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oSIST prEN 10225-3:2017
prEN 10225-3:2017 (E)
Contents Page
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Classification and designation . 10
4.1 Classification . 10
4.2 Designation . 10
5 Information to be supplied by the purchaser . 11
5.1 Mandatory information . 11
5.2 Options . 11
5.3 Example of an order . 11
6 Manufacturing process . 11
6.1 Steel manufacturing process . 11
6.2 Structural hollow section manufacturing process . 12
6.3 Qualification of personnel for NDT-activities . 12
6.4 Delivery condition . 12
7 Requirements . 12
7.1 General . 12
7.2 Chemical composition . 12
7.2.1 Cast analysis . 12
7.2.2 Product analysis . 12
7.2.3 Carbon equivalent values (CEV) and P . 13
cm
7.3 Mechanical properties . 13
7.3.1 General . 13
7.3.2 Post weld heat treatment (PWHT) . 13
7.3.3 Through thickness testing . 13
7.3.4 Flattening test . 13
7.3.5 Prequalification for arctic areas . 13
7.4 Weldability data . 13
7.5 Internal soundness and non-destructive testing . 14
7.5.1 Non-destructive testing of the weld seam of HFW hollow sections . 14
7.5.2 Non-destructive testing of seamless hollow sections for longitudinal imperfections . 14
7.5.3 Laminar discontinuities of hollow sections . 14
7.6 Surface quality . 14
7.7 Dimensions, tolerances, mass . 15
7.7.1 Dimensions and tolerances on dimensions and shape . 15
7.7.2 Mass of steel . 15
8 Inspection . 15
8.1 General . 15
8.2 Types of inspection documents . 15
8.3 Summary of inspections . 16
8.4 Intermediary supply . 16
9 Frequency of testing and preparation of samples and test pieces . 17
2
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oSIST prEN 10225-3:2017
prEN 10225-3:2017 (E)
9.1 Frequency of test . 17
9.1.1 Chemical analysis . 17
9.1.2 Tensile test and impact test . 17
9.1.3 Testing of the weld on hollow sections . 17
9.1.4 Testing of the corner regions for rectangular hollow sections . 17
9.2 Selection and preparation of samples for chemical analysis. 17
9.3 Location of samples and orientation of tensile test pieces . 17
9.4 Location of samples and orientation of impact test pieces . 18
9.5 Preparation of test pieces for mechanical tests. 18
9.5.1 General . 18
9.5.2 Preparation of tensile test pieces . 18
9.5.3 Preparation of impact test pieces . 19
10 Test methods . 19
10.1 Chemical analysis . 19
10.2 Mechanical tests . 19
10.2.1 Test temperatures . 19
10.2.2 Tensile test . 19
10.2.3 Impact test . 20
10.3 Visual inspection and dimensional check . 20
10.4 Non-destructive tests . 20
10.4.1 General . 20
10.4.2 NDT for the weld seam of HFW hollow sections . 20
10.4.3 Full peripheral NDT for seamless hollow sections . 21
10.4.4 Ultrasonic testing for laminar imperfections . 21
10.4.5 NDT for surface quality . 21
10.5 Retests, sorting and reprocessing . 21
11 Marking and bundling . 21
11.1 Die stamping and paint marking . 21
11.2 Bundling . 22
12 Options . 22
Annex A (normative when option 1 is specified by the purchaser) Details of manufacturing
procedures to be supplied by the manufacturer . 35
Annex B (normative when option 18 is specified by the purchaser) Weldability testing and
mechanical testing of butt welds. 36
B.1 General requirements . 36
B.2 Welding processes and procedure . 36
B.3 Butt-weld requirements . 37
B.3.1 General . 37
B.3.2 Test piece dimensions. 37
B.3.3 Bevel detail . 38
B.3.4 Welding processes . 39
B.3.5 Nominal heat input. 39
B.3.6 Heat treatment . 39
B.3.7 Dehydrogenation of test pieces . 40
B.4 Mechanical testing . 40
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B.4.1 General . 40
B.4.2 Charpy-V-notch impact tests . 40
B.4.3 CTOD test. 41
B.4.4 Macrohardness . 43
B.4.5 Cross-weld tensile test . 43
B.5 Specific test requirements . 43
B.6 Testing of hollow sections . 43
Annex C (normative when option 18 is specified by the purchaser) Weldability testing - Bead-
on-plate . 49
C.1 Objective . 49
C.2 Test material dimension . 49
C.3 Welding method . 49
C.4 Test condition . 49
C.5 Specific test requirements . 50
C.5.1 Macrosection and hardness tests . 50
Annex D (normative when option 18 is specified by the purchaser) Weldability testing -
Controlled thermal severity tests (CTS) . 52
D.1 Objective . 52
D.2 Test block dimensions . 52
D.3 General welding details . 52
D.3.1 Anchor welds . 52
D.3.2 Test welds . 52
D.4 Evaluation of the test welds . 53
D.5 Hardness testing . 53
Annex E (normative when option 15 is specified by the purchaser) Prequalification of steels for
offshore structures operating in Arctic areas . 59
Bibliography. 60
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European foreword
This document (prEN 10225-3:2017) has been prepared by Technical Committee ECISS/TC 103
“Structural steels other than reinforcements”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10225:2009.
This European Standard consists of the following parts, under the general title 'Weldable structural
steels for fixed offshore structures – Technical delivery conditions'
— Part 1: Plates
— Part 2: Sections
— Part 3: Hot finished hollow sections
— Part 4: Cold formed welded hollow sections (in preparation)
In comparison to the previous edition following technical changes were made:
— split of the standard in four parts;
— the steel names were adapted to EN 10027-1;
— former grades of group 3 are no longer listed, new options with the same enhanced properties have
been introduced (Options 2 and 3);
— an Annex E was added for the prequalification of steels for fixed offshore structures in arctic areas.
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1 Scope
This part of EN 10225 specifies requirements for weldable structural steels made of hot finished
seamless and high frequency welded hollow sections to be used in the fabrication of fixed offshore
structures.
Following thickness limitations are given in this standard:
— for seamless hollow sections up to and including 65 mm;
— for HFW hollow sections up to and including 25,4 mm.
Greater thicknesses may be agreed, provided the technical requirements of this European Standard are
maintained.
The standard is applicable to steels for offshore structures, designed to operate in the offshore sector
but not to steels supplied for the fabrication of subsea pipelines, risers, process equipment, process
piping and other utilities. It is primarily applicable to the North Sea Sector, but may also be applicable in
other areas provided that due consideration is given to local conditions e.g. temperature.
NOTE There is an Annex E on the prequalification of steels for fixed offshore structures in arctic areas.
Minimum yield strengths up to 770 MPa are specified together with low temperature impact properties
at temperatures down to –40 °C.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 1011-1, Welding — Recommendations for welding of metallic materials — Part 1: General guidance
for arc welding
EN 10020, Definition and classification of grades of steel
EN 10021, 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 10079, Definition of steel products
EN 10164, Steel products with improved deformation properties perpendicular to the surface of the
product — Technical delivery conditions
EN 10168, Steel products — Inspection documents — List of information and description
EN 10204, Metallic products — Types of inspection documents
EN 10210-2, Hot finished structural hollow sections of non-alloy and fine grain steels — Part 2:
Tolerances, dimensions and sectional properties
CEN/TR 10261, Iron and steel — European standards for the determination of chemical composition
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EN ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method (ISO 148-1)
EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for
mechanical testing (ISO 377)
EN ISO 643, Steels — Micrographic determination of the apparent grain size (ISO 643)
EN ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels (ISO 2566-
1)
EN ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers (ISO
4063)
EN ISO 4136, Destructive tests on welds in metallic materials — Transverse tensile test (ISO 4136)
EN ISO 4885, Ferrous materials — Heat treatments — Vocabulary (ISO 4885)
EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1)
EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature (ISO
6892-1)
EN ISO 6947, Welding and allied processes — Welding positions (ISO 6947)
EN ISO 8492, Metallic materials — Tube — Flattening test (ISO 8492)
EN ISO 9712, Non-destructive testing — Qualification and certification of NDT personnel (ISO 9712)
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 10893-3, Non-destructive testing of steel tubes — Part 3: Automated full peripheral flux leakage
testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection
of longitudinal and/or transverse imperfections (ISO 10893-3)
EN ISO 10893-5, Non-destructive testing of steel tubes — Part 5: Magnetic particle inspection of seamless
and welded ferromagnetic steel tubes for the detection of surface imperfections (ISO 10893-5)
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, Steel and iron — Sampling and preparation of samples for the determination of chemical
composition (ISO 14284)
EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials - Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO
15614-1)
ISO 11484, Steel products — Employer's qualification system for non-destructive testing (NDT) personnel
ISO 12135, Metallic materials — Unified method of test for the determination of quasistatic fracture
toughness
ISO 15653, Metallic materials — Method of test for the determination of quasistatic fracture toughness of
welds
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10020, EN 10021,
EN ISO 4885, EN 10079 and EN ISO 14284 and the following apply.
3.1
as-rolled
conventional hot rolling without any normalized rolling or thermomechanical rolling and/or heat
treatment like normalizing or quenching
3.2
concast
steel produced by a continuous casting process route
3.3
fine grain steel
steels with fine grain structure with an equivalent index of ferritic grain size ≥ 6
NOTE 1 to entry: For the determination of grain sizes except for +QT steels see EN ISO 643.
3.4
high frequency welded hollow section (HFW)
hollow long product, open at both ends, of circular, square or rectangular section, made by pressure
welding in a continuous or non-continuous process, in which strip is formed cold into a hollow profile
and the seam weld made by heating the adjacent edges through the resistance to the passage of a high
frequency current and pressing the edges together
NOTE 1 to entry: The electric current may be applied by direct electrode contact or by induction or conductio
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