EN 12735-1:2020

SLOVENSKI STANDARD
01-maj-2020
Nadomešča:
SIST EN 12735-1:2016
Baker in bakrove zlitine - Nevarjene okrogle cevi za hladilno in klimatsko tehniko -
1. del: Cevi za napeljave
Copper and copper alloys - Seamless, round tubes for air conditioning and refrigeration -
Part 1: Tubes for piping systems
Kupfer und Kupferlegierungen - Nahtlose Rundrohre für die Kälte- und Klimatechnik -
Teil 1: Rohre für Leitungssysteme
Cuivre et alliages de cuivre - Tubes ronds sans soudure pour l’air conditionné et la
réfrigération - Partie 1 : Tubes pour canalisations
Ta slovenski standard je istoveten z: EN 12735-1:2020
ICS:
23.040.15 Cevi iz neželeznih kovin Non-ferrous metal pipes
77.150.30 Bakreni izdelki Copper products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12735-1
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 23.040.15 Supersedes EN 12735-1:2016
English Version
Copper and copper alloys - Seamless, round tubes for air
conditioning and refrigeration - Part 1: Tubes for piping
systems
Cuivre et alliages de cuivre - Tubes ronds sans soudure Kupfer und Kupferlegierungen - Nahtlose Rundrohre
pour l'air conditionné et la réfrigération - Partie 1 : für die Kälte- und Klimatechnik - Teil 1: Rohre für
Tubes pour canalisations Leitungssysteme
This European Standard was approved by CEN on 13 January 2020.

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, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12735-1:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Designations. 9
4.1 Material . 9
4.2 Material condition . 9
4.3 Product . 9
5 Ordering information . 10
6 Requirements . 11
6.1 Composition . 11
6.2 Mechanical properties . 12
6.3 Dimensions and tolerances . 13
6.4 Drift expanding . 16
6.5 Freedom from defects. 16
6.6 Surface quality. 16
7 Sampling . 16
8 Test methods . 17
8.1 Analysis . 17
8.2 Tensile test . 17
8.3 Hardness test . 17
8.4 Drift expanding test . 17
8.5 Carbon content test . 17
8.6 Freedom from defects test . 17
8.7 Retests . 17
9 Declaration of conformity and inspection documentation . 18
9.1 Declaration of conformity . 18
9.2 Inspection documentation . 18
10 Packaging, marking and form of delivery . 18
10.1 Packaging and marking . 18
10.2 Marking of tubes . 18
10.3 Form of delivery . 19
Annex A (normative) Marking durability test . 20
A.1 Abrasion test . 20
A.2 Climatic test . 20
Annex B (normative) Freedom from defects test . 21
B.1 Eddy current test . 21
B.2 Hydrostatic test . 21
B.3 Pneumatic test . 22
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU (Pressure equipment Directive) aimed to be
covered . 23
Bibliography . 24

European foreword
This document (EN 12735-1:2020) has been prepared by Technical Committee CEN/TC 133 “Copper
and copper alloys”, 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 September 2020, and conflicting national standards
shall be withdrawn at the latest by September 2020.
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 12735-1:2016.
This document has been prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
Directive 2014/68/EU, Pressure Equipment Directive (PED).
For relationship with EU Directive 2014/68/EU, see informative Annex ZA, which is an integral part of
this document.
In comparison with EN 12735-1:2016, the following changes were made:
a) Modification of the maximum outside diameter for Cu-DHP, R220, in Table 3;
b) Removal of Note 3 from Table 3;
c) Requirements added in 10.2 concerning marking of tube coverings;
d) Amendment in 6.5;
e) Deletion of last sentence in 8.6;
f) Amendments in Annex ZA;
g) Update of Normative References;
h) Several editorial amendments.
EN 12735, Copper and copper alloys — Seamless, round tubes for air conditioning and refrigeration
consists of two parts:
— Part 1: Tubes for piping systems;
— Part 2: Tubes for equipment.
This is one of a series of European Standards for copper and copper alloy tubes. Other products are
specified as follows:
— EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and
heating applications;
— EN 12449, Copper and copper alloys — Seamless, round tubes for general purposes;
— EN 12450, Copper and copper alloys — Seamless, round copper capillary tubes;
— EN 12451, Copper and copper alloys — Seamless, round tubes for heat exchangers;
— EN 12452, Copper and copper alloys — Rolled, finned, seamless tubes for heat exchangers;
— EN 12735-2, Copper and copper alloys — Seamless, round tubes for air conditioning and
refrigeration — Part 2: Tubes for equipment;
— EN 13348, Copper and copper alloys — Seamless, round copper tubes for medical gases or vacuum;
— EN 13349, Copper and copper alloys — Pre-insulated copper tubes with solid covering;
— EN 13600, Copper and copper alloys — Seamless copper tubes for electrical purposes.
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, Turkey and the
United Kingdom.
Introduction
It is recommended that tubes manufactured in accordance with this document are certified as
conforming to the requirements of this document based on continuing surveillance which should be
coupled with an assessment of a supplier's certified quality management system.
It is advised to take appropriate precautions if applying insulating material because it could be
detrimental to the tube.
1 Scope
This document specifies the requirements, sampling, test methods and conditions of delivery for
seamless round copper and copper alloy tubes used for refrigeration and air-conditioning piping
systems (i.e. piping, connections and repairs).
It is applicable to tubes with an outside diameter from 3 mm up to and including 219 mm.
Tubes made of the copper-grade Cu-DHP are supplied in straight lengths in the material conditions hard
or half-hard, or in coils in the annealed material condition.
Tubes made of the alloy CuFe2P are supplied in straight length in the material conditions hard or
annealed.
2 Normative references
The following documents are referred to in the text in such a way that some o
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