SIST EN 10225-3:2019+A1:2023

Weldable structural steels for fixed offshore structures - Technical delivery conditions - Part 3: Hot finished hollow sections

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.

Schweißgeeignete Baustähle für feststehende Offshore-Konstruktionen - Technische Lieferbedingung - Teil 3: Warmgefertigte Hohlprofile

Dieses Dokument legt die Anforderungen an warmgefertigte nahtlose und HFW Hohlprofilen (en: high frequency welded, HFW) aus schweißgeeigneten Baustählen fest, die zur Herstellung von feststehenden Offshore Konstruktionen verwendet werden.
Folgende Dickenbeschränkungen werden in dieser Norm angegeben:
-   für nahtlose Hohlprofile bis einschließlich 65 mm,
-   für HFW Hohlprofile bis einschließlich 25,4 mm.
Größere Dicken können vereinbart werden, vorausgesetzt die technischen Lieferbedingungen dieser Europäischen Norm werden eingehalten.
Diese Europäische Norm gilt für Stähle für Offshore-Konstruktionen, die für den Offshore-Einsatz vorgesehen sind, jedoch nicht für Stähle zur Herstellung von Unterwasserpipelines, Steigleitungen (en: risers), Verfahrens-Ausrüstungen, Rohrsystemen und anderen Einrichtungen und Ausrüstungen. Sie gilt in erster Linie für den Bereich der Nordsee, darf jedoch auch für andere Gebiete angewendet werden, vorausgesetzt, dass die örtlichen Bedingungen, z. B. die Auslegungstemperatur, genügend berücksichtigt werden.
ANMERKUNG   Dieses Dokument hat einen informativen Anhang E bezüglich einer Vorqualifizierung von Stählen für den Einsatz in arktischen Gebieten bei Offshore Konstruktionen.
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 (vključno z dopolnilom A1)

Ta dokument določa zahteve za variva konstrukcijska jekla iz vroče izdelanih brezšivnih in visokofrekvenčno varjenih votlih profilov, ki se uporabljajo za izdelavo konstrukcij naftnih ploščadi.
V tem standardu so podane naslednje omejitve debeline:
–   za brezšivne 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.
Ta evropski standard se uporablja za jekla za konstrukcije naftnih ploščadi, zasnovane 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. konstrukcijsko določena temperatura.
OPOMBA:   Ta dokument vsebuje informativni dodatek E o predhodni izbiri jekel za konstrukcije naftnih ploščadi v arktičnih območjih.
Minimalne napetosti tečenja do 770 MPa so določene skupaj z udarnimi lastnostmi pri temperaturah do –40 °C.

General Information

• Status: Published
• Publication Date: 12-Jun-2023
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• ICS: 77.140.10 - Heat-treatable steels
• ICS: 77.140.70 - Steel profiles
• Technical Committee: IFEK - Ferrous metals
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Jun-2023
• Due Date: 11-Aug-2023
• Completion Date: 13-Jun-2023
• Ref Project: EN 10225-3:2019+A1:2023 - Weldable structural steels for fixed offshore structures - Technical delivery conditions - Part 3: Hot finished hollow sections

Relations

• Merged From: SIST EN 10225-3:2019 - Weldable structural steels for fixed offshore structures - Technical delivery conditions - Part 3: Hot finished hollow sections
• Effective Date: 29-Mar-2023
• Merged From: SIST EN 10225-3:2019/kprA1:2023 - Weldable structural steels for fixed offshore structures - Technical delivery conditions - Part 3: Hot finished hollow sections
• Effective Date: 29-Mar-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 10225-3:2019+A1:2023
01-julij-2023
Konstrukcijska jekla za varjene konstrukcije naftnih ploščadi - Tehnični dobavni
pogoji - 3. del: Vroče izdelani votli profili (vključno z dopolnilom A1)
Weldable structural steels for fixed offshore structures - Technical delivery conditions -
Part 3: Hot finished hollow sections
Schweißgeeignete Baustähle für feststehende Offshore-Konstruktionen - Technische
Lieferbedingung - 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+A1:2023
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+A1:2023 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+A1:2023

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SIST EN 10225-3:2019+A1:2023


EN 10225-3:2019+A1
EUROPEAN STANDARD

NORME EUROPÉENNE

May 2023
EUROPÄISCHE NORM
ICS 77.140.10 Supersedes EN 10225-3:2019
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 Lieferbedingung - Teil 3:
techniques de livraison - Partie 3 : Profils creux finis à Warmgefertigte Hohlprofile
chaud
This European Standard was approved by CEN on 23 December 2018 and includes Amendment approved by CEN on 17 April
2023.

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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10225-3:2019+A1:2023 E
worldwide for CEN national Members.

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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (E)
Contents Page
European foreword . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Classification and designation . 11
4.1 Classification . 11
4.2 Designation . 11
5 Information to be supplied by the purchaser . 12
5.1 Mandatory information . 12
5.2 Options . 12
5.3 Example of an order . 12
6 Manufacturing process . 13
6.1 Steel manufacturing process . 13
6.2 Structural hollow section manufacturing process . 13
6.3 Qualification of personnel for NDT activities . 13
6.4 Delivery condition . 13
7 Requirements . 13
7.1 General . 13
7.2 Chemical composition . 14
7.2.1 Heat analysis . 14
7.2.2 Product analysis . 14
7.2.3 Carbon equivalent values (CEV) and P . 14
cm
7.3 Mechanical properties . 14
7.3.1 General . 14
7.3.2 Post weld heat treatment (PWHT) . 14
7.3.3 Through thickness testing . 15
7.3.4 Flattening test . 15
7.3.5 Prequalification for arctic areas . 15
7.4 Weldability data . 15
7.5 Internal soundness and non-destructive testing . 15
7.5.1 Non-destructive testing of the weld seam of HFW hollow sections . 15
7.5.2 Non-destructive testing of seamless hollow sections for longitudinal imperfections . 15
7.5.3 Laminar discontinuities of hollow sections . 16
7.6 Surface quality . 16
7.7 Dimensions, tolerances, mass . 16
7.7.1 Dimensions and tolerances on dimensions and shape . 16
7.7.2 Mass of steel . 16
8 Inspection . 17
8.1 General . 17
8.2 Types of inspection documents . 17
8.3 Summary of inspections . 18
8.4 Intermediary supply . 18
9 Frequency of testing and preparation of samples and test pieces . 18
9.1 Frequency of test . 18
9.1.1 Chemical analysis . 18
2

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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (E)
9.1.2 Tensile test and impact test . 19
9.1.3 Testing the weld seam of welded hollow sections . 19
9.1.4 Testing of the corner regions for rectangular hollow sections . 19
9.2 Selection and preparation of samples for product analysis. 19
9.3 Location of samples and orientation of tensile test pieces . 19
9.4 Location of samples and orientation of impact test pieces . 20
9.5 Preparation of test pieces for mechanical tests. 20
9.5.1 General . 20
9.5.2 Preparation of tensile test pieces . 20
9.5.3 Preparation of impact test pieces . 20
10 Test methods . 21
10.1 Chemical analysis . 21
10.2 Mechanical tests . 21
10.2.1 Test temperatures . 21
10.2.2 Tensile test . 21
10.2.3 Impact test . 22
10.3 Visual inspection and dimensional check . 22
10.4 Non-destructive tests . 22
10.4.1 General . 22
10.4.2 NDT for the weld seam of HFW hollow sections . 22
10.4.3 Full peripheral NDT for seamless hollow sections . 23
10.4.4 Ultrasonic testing for laminar imperfections . 23
10.4.5 NDT for surface quality . 23
10.5 Retests, sorting and reprocessing . 23
11 Marking and bundling . 23
11.1 Die stamping and paint marking . 23
11.2 Bundling . 23
12 Options . 24
Annex A (normative when Option 1 is specified by the purchaser) Further details of steel
manufacturing procedures to be supplied by the manufacturer . 37
Annex B (normative when Option 17 is specified by the purchaser) Weldability testing and
mechanical testing of butt welds. 38
B.1 General requirements . 38
B.2 Welding processes and procedure . 38
B.3 Butt-weld requirements . 39
B.3.1 General . 39
B.3.2 Test piece dimensions. 39
B.3.3 Bevel detail . 40
B.3.4 Welding processes . 40
B.3.5 Nominal heat input. 40
B.3.6 Heat treatment . 41
B.3.7 Dehydrogenation of test pieces . 41
B.4 Mechanical testing . 42
B.4.1 General . 42
B.4.2 Charpy V-notch impact tests . 43
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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (E)
B.4.3 Fracture mechanic test . 44
B.4.4 Macrohardness . 45
B.4.5 Cross-weld tensile test . 46
Annex C (normative when Option 17 is specified by the purchaser) Weldability testing - Bead-
on-plate . 51
C.1 General . 51
C.2 Test material dimension . 51
C.3 Welding method . 51
C.4 Test condition . 51
C.5 Specific test requirements: macrosection and hardness tests . 52
Annex D (normative when Option 17 is specified by the purchaser) Weldability testing –
Controlled thermal severity tests (CTS) . 54
D.1 General . 54
D.2 Test block dimensions . 54
D.3 General welding details . 54
D.3.1 Anchor welds . 54
D.3.2 Test welds . 54
D.4 Evaluation of the test welds . 55
D.5 Hardness testing . 55
Annex E (informative) Prequalification of steels for offshore structures operating in arctic
areas . 61
Bibliography. 62

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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (E)
European foreword
This document (EN 10225-3:2019+A1:2023) has been prepared by Technical Committee
CEN/TC 459/SC 3 “Structural steels other than reinforcements”, the secretariat of which is held by DIN.
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 2023, and conflicting national standards
shall be withdrawn at the latest by November 2023.
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.
EN 10225-3:2019, together with EN 10225-1:2019, EN 10225-2:2019, and EN 10225-4:2019,
superseded EN 10225:2009.
This document EN 10225-3:2019+A1:2023 supersedes EN 10225-3:2019.
This document includes Amendment 1 approved by CEN on 7 April 2023.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
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 EN 10225:2009 the 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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (E)
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, Türkiye and the
United Kingdom.

6

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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (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
CEN/TR 10261, Iron and steel — European standards for the determination of chemical composition
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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (E)
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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SIST EN 10225-3:2019+A1:2023
EN 10225-3:2019+A1:2023 (E)
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
...