SIST EN 15266:2025

SLOVENSKI STANDARD
01-marec-2025
Upogljivi valoviti cevni kompleti iz nerjavnega jekla za plinske napeljave z
delovnim tlakom do 0,2 MPa (2 bara)
Stainless steel pliable corrugated tubing kits for gas installation pipework with an
operating pressure up to 0,2 MPa (2 bar)
Nichtrostende biegbare Wellrohrbausätze für Gasleitungsanlagen mit einem
Arbeitsdruck bis 0,2 MPa (2 bar)
Kits de tuyaux onduleux pliables en acier inoxydable pour les installations intérieures à
gaz avec une pression de service inférieure ou égale à 0,2 MPa (2 bar)
Ta slovenski standard je istoveten z: EN 15266:2024
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15266
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 23.040.01 Supersedes EN 15266:2007
English Version
Stainless steel pliable corrugated tubing kits for gas
installation pipework with an operating pressure up to
0,2 MPa (2 bar)
Kits de tuyaux onduleux pliables en acier inoxydable Nichtrostende biegbare Wellrohrbausätze für
pour les installations intérieures de gaz avec une Gasleitungsanlagen mit einem Arbeitsdruck bis
pression de service inférieure ou égale à 0,2 MPa 0,2 MPa (2 bar)
(2 bar)
This European Standard was approved by CEN on 18 November 2024.

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 NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

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 15266:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviations . 7
4 Design requirements . 9
4.1 General. 9
4.2 Nominal size DN, wall thickness and pressure drop . 10
4.3 Threads . 10
4.4 PLT fittings . 10
4.5 Seals . 11
4.6 Supports . 11
4.7 Electrical conductivity requirements . 11
4.8 Cover . 11
4.9 Additional protection . 12
4.10 Environment . 12
5 Performance and test requirements. 12
5.1 General. 12
5.2 Tightness . 16
5.3 Dimensional check . 17
5.4 Bending performance . 17
5.5 Crushing resistance . 18
5.6 Stability under pressure . 20
5.7 Wear resistance of outer cover . 20
5.8 Structural strength test . 21
5.9 Impact resistance . 21
5.10 Penetration resistance . 22
5.11 Resistance to pull out . 23
5.12 Chemical resistance . 23
5.13 Low temperature resistance . 26
5.14 Ageing . 26
5.15 Tightness in case of fire . 28
5.16 Reaction to fire. 29
5.17 Electrical conductivity . 29
5.18 Pressure drop . 30
5.19 Maximum load for admissible deformation of PLT support . 36
5.20 Dangerous substances. 37
6 Assembly and installation instruction . 38
6.1 Instructions . 38
6.2 Marking, labelling and packaging . 39
Annex A (normative) Single-flame source test . 41
A.1 General. 41
A.2 Standardized mounting and fixing . 41
A.3 Test definition . 41
A.4 Test duration . 41
Annex B (normative) Thermal attack by a single burning item . 43
Annex C (informative) Factory Production Control . 44
C.1 General . 44
C.2 FPC recommendations for all manufacturers . 44
C.3 Manufacturer’s specific FPC system recommendations . 45
Bibliography . 47
European foreword
This document (EN 15266:2024) has been prepared by Technical Committee CEN/TC 342 “Metal hoses,
hose assemblies, bellows and expansion joints”, the secretariat of which is held by SNV.
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 June 2025, and conflicting national standards shall be
withdrawn at the latest by June 2025.
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 supersedes EN 15266:2007.
In comparison with the previous edition, the following technical modifications have been made:
— operating pressure up to 0,2 MPa (2 bar).
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.
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.
Introduction
This document contains the general safety requirements relating to the safety of persons, animals, and
property and the protection of their environment.
The requirements of this document concern designers, manufacturers, suppliers and importers of
stainless steel pliable corrugated gas tubing kits for gas installation pipework.
Installation and mandatory strength and tightness tests before commissioning should consider the local
application regulations where they exist.
This document is applicable to:
— new installation pipework;
— replacements of existing installations; or
— extensions to existing installations.
Stainless steel pliable corrugated gas tubing kits can be used in conjunction with other approved gas
pipework.
This document defines performance requirements for the products to be placed on the European
Economic Area EEA.
1 Scope
This document specifies the requirements for material, design, manufacture, testing, marking and
documentation of stainless steel pliable corrugated gas tubing kits for gas installation pipework with a
maximum allowable pressure (PS):
— less than or equal to 0,5 bar within a nominal size range from DN 10 to DN 50 (class 1); and
— less than or equal to 2 bar within a nominal size range from DN 10 to DN 25 (class 2).
This document applies to stainless steel pliable corrugated gas tubing kits used for 1st, 2nd and 3rd family
gases (see EN 437) in residential, commercial and industrial gas installations to be installed outdoors or
indoors at a temperature range from –20 °C to +60 °C.
This document does not apply to:
— pliable tubing without cover;
— corrugated safety metal hose assemblies for connection to moveable appliances.
NOTE This document does not cover the installation aspects of stainless steel pliable corrugated gas tubing
kits.
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 1363-1:2020, Fire res
...