prEN 10253-3
(Main)Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
This document specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic-ferritic (duplex) stainless steel without specific inspection requirements.
This document specifies:
- steel grades and their chemical compositions;
- mechanical properties;
- dimensions and tolerances;
- requirements for inspection and testing;
- inspection documents;
- marking;
- handling and packaging.
Formstücke zum Einschweißen - Teil 3: Austenitische und austenitisch-ferritische (Duplex) nichtrostende Stähle ohne besondere Prüfanforderungen
Dieses Dokument legt die technischen Lieferbedingungen für nahtlose und geschweißte Formstücke zum Einschweißen (Rohrbogen, konzentrische und exzentrische Reduzierstücke, T-Stücke mit egalem oder mit reduziertem Abzweig, Kappen) aus austenitischen und austenitisch-ferritischen (Duplex) nichtrostendem Stahl, ohne besondere Anforderungen an die Prüfung, fest.
Dieses Dokument legt fest:
- Stahlsorten und deren chemischen Zusammensetzungen;
- mechanischen Eigenschaften;
- Maße und Grenzabmaße;
- Anforderungen an die Prüfungen;
- Prüfbescheinigungen;
- Kennzeichnung;
- Versandvorbereitung und Verpackung.
Raccords à souder bout à bout - Partie 3 : Aciers inoxydables austénitiques et austéno-ferritiques (duplex) sans contrôle spécifique
Le présent document spécifie les exigences techniques de livraison pour les raccords à souder bout à bout, sans soudure et soudés (coudes, réductions concentriques et excentriques, tés égaux et réduits, caps) en acier inoxydable austénitique et austéno-ferritique (duplex), livrés sans contrôle spécifique.
Le présent document spécifie :
- les nuances d'acier et leur composition chimique ;
- les caractéristiques mécaniques ;
- les dimensions et tolérances ;
- les exigences relatives au contrôle et aux essais ;
- les documents de contrôle ;
- le marquage ;
- la manutention et l’emballage.
Cevni fitingi za soležne zvare - 3. del: Kovna avstenitna in avstenitno-feritna (dupleksna) nerjavna jekla brez posebnih zahtev glede pregledov
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Cevni fitingi za soležne zvare - 3. del: Kovna avstenitna in avstenitno-feritna
(dupleksna) nerjavna jekla brez posebnih zahtev glede pregledov
Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex)
stainless steels without specific inspection requirements
Formstücke zum Einschweißen - Teil 3: Austenitische und austenitisch-ferritische
(Duplex) nichtrostende Stähle ohne besondere Prüfanforderungen
Raccords à souder bout à bout - Partie 3 : Aciers inoxydables austénitiques et austéno-
ferritiques (duplex) sans contrôle spécifique
Ta slovenski standard je istoveten z: prEN 10253-3
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.140.20 Visokokakovostna jekla Stainless steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2025
ICS 23.040.40; 77.140.20 Will supersede EN 10253-3:2008
English Version
Butt-welding pipe fittings - Part 3: Wrought austenitic and
austenitic-ferritic (duplex) stainless steels without specific
inspection requirements
Raccords à souder bout à bout - Partie 3 : Aciers Formstücke zum Einschweißen - Teil 3: Austenitische
inoxydables austénitiques et austéno-ferritiques und austenitisch-ferritische (Duplex) nichtrostende
(duplex) sans contrôle spécifique Stähle ohne besondere Prüfanforderungen
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, 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.
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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10253-3:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
3.1 Terms and definitions . 8
3.2 Symbols and abbreviations . 8
4 Classification of grades and designation . 9
4.1 Classification of grades . 9
4.2 Designation . 9
5 Information to be supplied . 10
5.1 Mandatory information . 10
5.1.1 General. 10
5.1.2 Designation of fittings . 10
5.1.3 Information . 10
5.2 Options . 10
5.3 Examples of an order . 11
5.3.1 Example 1 . 11
5.3.2 Example 2 . 11
5.3.3 Example 3 . 11
5.3.4 Example 4 . 12
6 Manufacturing process . 12
6.1 Steelmaking process . 12
6.2 Product making process for fittings and heat treatment . 12
6.2.1 Product making process . 12
6.2.2 Welding . 12
6.2.3 Heat treatment . 13
7 Technical requirements . 14
7.1 General. 14
7.2 Chemical composition – Cast analysis . 14
7.3 Weldability . 14
7.4 Mechanical properties at room temperature . 18
7.5 Corrosion resistance . 24
7.6 Appearance and internal soundness . 24
7.6.1 Definition of surface imperfections . 24
7.6.2 Appearance . 25
7.6.3 Internal soundness . 25
7.7 Dimensions and tolerances . 26
7.7.1 Dimensions. 26
7.7.2 Dimensional tolerances . 30
7.7.3 Corrugation . 33
7.7.4 Performance of the end beveling . 34
7.8 Leak tightness . 34
8 Inspection . 34
8.1 Inspection documents . 34
8.1.1 Types of inspection documents . 34
8.1.2 Content of inspection documents . 34
8.2 Summary of inspection and testing . 35
9 Sampling . 35
9.1 Frequency of tests and test unit . 35
9.2 Preparation of samples and test pieces . 37
9.2.1 Samples and test pieces for mechanical tests . 37
9.2.2 Test piece for tensile test on the base material . 37
9.2.3 Test piece for the tensile test on the weld . 37
9.2.4 Test piece for the weld bend test . 37
9.2.5 Test piece for the intergranular corrosion test . 37
10 Test methods . 37
10.1 Chemical analysis . 37
10.2 Tensile test on the base material . 37
10.2.1 At room temperature . 37
10.2.2 At elevated temperature . 38
10.3 Transverse tensile test on the weld . 38
10.4 Weld bend test . 38
10.5 Intergranular corrosion test . 38
10.6 Dimensional testing . 38
10.7 Visual inspection . 38
10.8 Non destructive testing. 38
10.8.1 Personnel . 38
10.8.2 NDT of the weld . 39
10.9 Material identification . 39
10.10 Leak tightness test . 39
10.11 Optional tests . 39
11 Marking . 39
12 Handling and packaging . 40
Annex A (normative) Structural dimensions of fittings . 41
Annex B (informative) Commonly used inside diameters a
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