EN 10253-2:2021/prA1
(Amendment)Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements
Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with 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 carbon and alloy steel in two test categories which are intended for pressure purposes at room temperature, at low temperature or at elevated temperatures, and for the transmission and distribution of fluids and gases.
It specifies:
a) type of fittings;
type A: Butt-welding fittings with reduced pressure factor;
type B: Butt-welding fittings for use at full service pressure;
b) steel grades and their chemical compositions;
c) mechanical properties;
d) dimensions and tolerances;
e) requirements for inspection and testing;
f) inspection documents;
g) marking;
h) protection and packaging.
NOTE The selection of the appropriate fitting (material, thickness) is the ultimate responsibility of the manufacturer of the pressure equipment (see European Legislation for Pressure Equipment). In the case of a harmonized supporting standard for materials, presumption of conformity to the ESRs is limited to technical data of materials in the standard and does not presume adequacy of the material to a specific item of equipment. Consequently, it is essential that the technical data stated in the material standard be assessed against the design requirements of this specific item of equipment to verify that the ESRs of the PED are satisfied.
Formstücke zum Einschweißen - Teil 2: Unlegierte und legierte ferritische Stähle mit besonderen Prüfanforderungen
Raccords à souder bout à bout - Partie 2 : Aciers non alliés et aciers ferritiques alliés avec contrôle spécifique
Cevni fitingi za soležne zvare - 2. del: Nelegirana in feritna legirana jekla s posebnimi zahtevami kontrole
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2024
Cevni fitingi za soležne zvare - 2. del: Nelegirana in feritna legirana jekla s
posebnimi zahtevami kontrole
Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific
inspection requirements
Formstücke zum Einschweißen - Teil 2: Unlegierte und legierte ferritische Stähle mit
besonderen Prüfanforderungen
Raccords à souder bout à bout - Partie 2 : Aciers non alliés et aciers ferritiques alliés
avec contrôle spécifique
Ta slovenski standard je istoveten z: EN 10253-2:2021/prA1
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.140.20 Visokokakovostna jekla Stainless steels
77.140.45 Nelegirana jekla Non-alloyed steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 10253-2:2021
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
May 2024
ICS 77.140.20; 23.040.40; 77.140.45
English Version
Butt-welding pipe fittings - Part 2: Non alloy and ferritic
alloy steels with specific inspection requirements
Raccords à souder bout à bout - Partie 2 : Aciers non Formstücke zum Einschweißen - Teil 2: Unlegierte und
alliés et aciers ferritiques alliés avec contrôle legierte ferritische Stähle mit besonderen
spécifique Prüfanforderungen
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC
459/SC 10.
This draft amendment A1, if approved, will modify the European Standard EN 10253-2:2021. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.
This draft amendment 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10253-2:2021/prA1:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modifications to Clause 2, "Normative references" . 4
2 Modification to Clause 4, "Symbols and abbreviations" . 5
3 Modification to 5.1 "Classification of grades . 6
4 Modification to 6.2 "Options" . 6
5 Modification to 6.3 "Examples" . 6
6 Modification to 8.2.3 "Heat treatment condition" . 7
7 Modification to Clause 9 "Technical requirements" . 8
8 Modification to 10.1 "Definitions of surface imperfections" . 9
9 Modification to 11.2.5 "Corrugation" . 9
10 Modification to 12.2.2 "Content of inspection documents" . 9
11 Modification to 12.3 "Summary of inspection and testing" . 10
12 Modification to 13.1.1 "Test unit" . 10
13 Modification to 13.2.6 "Test piece for the impact test" . 10
14 Modification to 14.2.2 "At elevated temperature" . 10
15 Modification to 14.3 "Transverse tensile test on the weld" . 10
16 Modification to 14.5 "Weld bend test" . 11
17 Modification to 14.6 "Impact testing" . 11
18 Modification to 14.9.2 "NDT of the weld" . 11
19 Modification to Annex A "Dimensions" . 11
20 Modification to Annex B "Determination of pressure factors and wall thickness" . 11
21 Modification to Annex C "Pressure factor tables for Fittings of type A". 15
22 Modification to Annex D "Wall thickness tables for fittings of type B" . 15
23 Modification to Bibliography . 17
European foreword
This document (EN 10253-2:2021/prA1:2024) has been prepared by Technical Committee CEN/TC 459
“ECISS - European Committee for Iron and Steel Standardization” , the secretariat of which is held by
AFNOR.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For the relationship with EU Legislation, see informative Annex ZA, which is an integral part of this
document.
EN 10253 comprises a series of European Standards about Butt-welding pipe fittings, namely:
— Part 1: Wrought carbon steel for general use and without specific inspection requirements;
— Part 2: Non alloy and ferritic alloy steels with specific inspection requirements;
— Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection
requirements;
— Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection
requirements.
Through its sub-committee CEN/TC 459/SC 10 “Steel tubes, and iron and steel fittings” (secretariat: UNI).
1 Modifications to Clause 2, "Normative references"
Replace the normative reference for EN 10222-2:2017 with the following and update the normative
references in the document accordingly:
"EN 10222-2:2017+A1:2021, Steel forgings for pressure purposes — Part 2: Ferritic and martensitic
steels with specified elevated temperatures properties".
Replace the normative reference for EN 10222-4:2017 with the following and update the normative
references in the document accordingly:
"EN 10222-4:2017+A1:2021, Steel forgings for pressure purposes — Part 4: Weldable fine grain steels
with high proof strength".
Add the following footnote 1 to the normative reference for EN 13480-2:2017:
" As impacted by EN 13480-2:2017/A1:2018, EN 13480-2:2017/A2:2018, EN 13480-2:2017/A3:2018,
EN 13480-2:2017/A7:2020 and EN 13480-2:2017/A8:2021."
Add the following footnote 2 to the normative reference for EN 13480-3:2017:
" As impacted by EN 13480-3:2017/A1:2021, EN 13480-3:2017/A2:2020, EN 13480-3:2017/A3:2020,
EN 13480-3:2017/A4:2021 and EN 13480-3:2017/A5:2022.".
Add the following footnote 3 to the normative reference for EN 13480-5:2017:
" As impacted by EN 13480-5:2017/A1:2019 and EN 13480-5:2017/A2:2021.".
Replace the normative reference for EN ISO 2566-1:1999 with the following and update the normative
references in the document accordingly:
"EN ISO 2566-1:2021, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels
(ISO 2566-1:2021, Corrected version 2022-06)".
Replace the normative reference for EN ISO 4136:2012 with the following and update the normative
references in the document accordingly:
"EN ISO 4136:2022, Destructive tests on welds in metallic materials — Transverse tensile test
(ISO 4136:2022) ".
Replace the normative reference for EN ISO 5173:2010 with the following and update the normative
references in the document accordingly:
"EN ISO 5173:2023, Destructive tests on welds in metallic materials — Bend tests (ISO 5173:2023)".
Replace the normative reference for EN ISO 5817:2014 with the following and update the normative
references in the document accordingly:
"EN ISO 5817:2023, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam
welding excluded) — Quality levels for imperfections (ISO 5817:2023)".
Replace the normative reference for EN ISO 9016:2012 with the following and update the normative
references in the document accordingly:
"EN ISO 9016:2022, Destructive tests on welds in metallic materials — Impact tests — Test specimen
location, notch orientation and examination (ISO 9016:2022) ".
Replace the normative reference for EN ISO 9712:2012 with the following and update the normative
references in the document accordingly:
"EN ISO 9712:2022, Non-destructive testing — Qualification and certification of NDT personnel
(ISO 9712:2021) ".
Replace the normative reference for EN ISO 14284:2002 with the following and update the normative
references in the document accordingly:
"EN ISO 14284:2022, Steel and iron — Sampling and preparation of samples for the determination of
chemical composition (ISO 14284:2022)".
2 Modifications to Clause 4, "Symbols and abbreviations"
Add the following symbols with their definition:
Maximum outside diameter of the fitting at the base of corrugation #1, expressed in
d
a1
millimetres
Maximum outside diameter of the fitting at the top of corrugation #1, expressed in
d
a2
millimetres
Maximum outside diameter of the fitting at the base of corrugation #2, expressed in
d
a3
millimetres
Maximum outside diameter of the fitting at the top of corrugation #2, expressed in
d
a4
millimetres
h
Mean height of corrugation, expressed in millimetres
m
LE Length of corrugation, expressed in millimetres
O
Out of roundness, expressed in %
v
Replace the symbols and definitions of D , D , R , R , R with the following and update the
max min eh p0,2 t0,5
symbols in the document accordingly:
D
Maximum outside diameter in one section, expressed in millimetres
max
D
Minimum outside diameter in the same section, expressed in millimetres
min
R
Upper yield strength
eH
R
0,2 % proof strength, plastic extension expressed in megapascals
p0,2
R
0,5 % proof strength, total extension expressed in megapascals
t0,5
3 Modification to 5.1 "Classification of grades
Replace the second paragraph with the following:
"The steel grades P235GH, P265GH, P355N, P355NH, P355NL1 and P215NL can be provided in
accordance with test category TC1 or TC2. Steel grades P235TR2 and P265TR2 shall be provided only
in accordance with TC1. Any other steel grade given in Table 2 shall be provided only in accordance
with TC2.".
4 Modification to 6.2 "Options"
Replace the text for options 9), 15), 16), 19) and 28) with following:
"9) Verification of the proof strength at elevated temperature (see 9.3, 14.2.2 and 12.3, Table 14);
option 9) is equal to option 16);”;
“15) See option 8);
16) See option 9);”;
“19) Impact test of the heat affected zone (see 13.2.6, 14.6 and 12.3, Table 14); option 19) is equal to
option 28);”;
“28) See option 19);".
5 Modification to 6.3 "Examples of an order"
Replace 6.3.3, 6.3.4 and 6.3.5 with the following:
"6.3.3 Example 3
100 concentric (con) reducers in accordance with this document of type B, having an outside diameter
168,3 mm with a wall thickness of 7,1 mm and a reduced outside diameter 114,3 mm with a wall
thickness of 6,3 mm, made of steel grade 16Mo3.
100 reducers con — EN 10253-2 — type B — 168,3 × 7,1 — 114,3 × 6,3 — 16Mo3
6.3.4 Example 4
100 eccentric (ecc) seamless (s) reducers in accordance with this document of type A, having an outside
diameter 168,3 mm with a wall thickness of 7,1 mm and a reduced outside diameter 114,3 mm with a
wall thickness of 6,3 mm, made of steel grade 16Mo3.
100 reducers ecc — EN 10253-2 — type A — 168,3 × 7,1 — 114,3 × 6,3 — 16Mo3 — Option 3:
seamless (s)
6.3.5 Example 5
20 caps in accordance with this document of type A, having an outside diameter 273,0 mm with a wall
thickness of 16,0 mm, made of steel grade P355N and test category TC2.
20 caps — EN 10253-2 — type A — 273,0 × 16,0 — P355N — TC2
6.3.6 Example 6
500 reducing tees in accordance with this document of type B, having an outside diameter 114,3 mm
with a wall thickness
...
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