SIST EN 12735-1:2020
(Main)Copper and copper alloys - Seamless, round tubes for air conditioning and refrigeration - Part 1: Tubes for piping systems
Copper and copper alloys - Seamless, round tubes for air conditioning and refrigeration - Part 1: Tubes for piping systems
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.
Kupfer und Kupferlegierungen - Nahtlose Rundrohre für die Kälte- und Klimatechnik - Teil 1: Rohre für Leitungssysteme
Dieses Dokument legt die Anforderungen, Probenentnahme, Prüfverfahren und Lieferbedingungen für nahtlose Rundrohre aus Kupfer und Kupferlegierungen fest, die in Leitungssystemen der Kälte und Klimatechnik (d. h. Rohrleitungen, Verbindungen und Ausbesserungen) verwendet werden.
Es gilt für Rohre mit einem Außendurchmesser von 3 mm bis 219 mm.
Rohre aus der Kupfersorte Cu DHP werden in geraden Längen geliefert, im Zustand hart oder halbhart, oder in Ringen, geglüht.
Rohre aus der Kupferlegierung CuFe2P werden in geraden Längen geliefert, im Zustand hart oder geglüht.
Cuivre et alliages de cuivre - Tubes ronds sans soudure pour l’air conditionné et la réfrigération - Partie 1 : Tubes pour canalisations
Le présent document spécifie les exigences, le mode d’échantillonnage, les méthodes d’essai et les conditions de livraison applicables aux tubes ronds sans soudure en cuivre et alliages de cuivre utilisés dans les circuits d’air conditionné et de réfrigération (c’est-à-dire : canalisations, raccordements et réparations).
Il s’applique aux tubes ayant un diamètre extérieur de 3 mm à 219 mm inclus.
Les tubes en nuance de cuivre Cu-DHP sont livrés en longueurs droites à l’état dur ou demi-dur ou bien en couronnes à l’état recuit.
Les tubes en alliage CuFe2P sont livrés en longueurs droites à l’état dur ou recuit.
Baker in bakrove zlitine - Nevarjene okrogle cevi za hladilno in klimatsko tehniko - 1. del: Cevi za napeljave
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 12735-1:2020
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
SIST EN 12735-1:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 12735-1:2020
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SIST EN 12735-1:2020
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.
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
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
2
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
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
3
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
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;
4
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
— 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.
5
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
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.
6
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
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 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 723:2009, Copper and copper alloys — Combustion method for determination of the carbon content on
the inner surface of copper tubes or fittings
EN 1173:2008, Copper and copper alloys — Material condition designation
EN 1412:2016, Copper and copper alloys — European numbering system
EN 1971-1:2011, Copper and copper alloys — Eddy current test for measuring defects on seamless round
copper and copper alloy tubes — Part 1: Test with an encircling test coil on the outer surface
EN 1971-2:2011, Copper and copper alloys — Eddy current test for measuring defects on seamless round
copper and copper alloy tubes — Part 2: Test with an internal probe on the inner surface
EN 10204:2004, Metallic products — Types of inspection documents
EN 16117-1:2011, Copper and copper alloys — Determination of copper content — Part 1: Electrolytic
determination of copper in materials with copper content less than 99,85 %
EN 16117-2:2012, Copper and copper alloys — Determination of copper content — Part 2: Electrolytic
determination of copper in materials with copper content higher than 99,80 %
EN ISO 6507-1:2018, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-
1:2018)
EN ISO 6892-1:2016, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1:2016)
EN ISO 8493:2004, Metallic materials — Tube — Drift-expanding test (ISO 8493:1998)
EN ISO/IEC 17050-1:2010, Conformity assessment — Supplier’s declaration of conformity — Part 1:
General requirements (ISO/IEC 17050-1:2004, corrected version 2007-06-15)
EN ISO/IEC 17050-2:2004, Conformity assessment — Supplier’s declaration of conformity — Part 2:
Supporting documentation (ISO/IEC 17050-2:2004)
7
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
ISO 1190-1:1982, Copper and copper alloys — Code of designation — Part 1: Designation of materials
ISO 4741:1984, Copper and copper alloys — Determination of phosphorus content — Molybdovanadate
spectrometric method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
seamless round tube
hollow semi-finished product, circular in cross-section having a uniform wall thickness, which at all
stages of production has a continuous periphery
3.2
coil
winding in which the turns either are arranged into layers parallel to its axis such that successive turns
in a given layer are next to one another (LWC – Level Wound Coil) or are spirally arranged (SWC –
Spiral Wound Coil)
3.3
mean diameter
arithmetical mean of the maximum and minimum outside diameters through the same cross-section of
the tube
[SOURCE: EN 1057:2006+A1:2010, Definition 3.5]
3.4
deviation from circular form
difference between the maximum and minimum outside diameters measured at any one cross-section
of the tube
[SOURCE: EN 1057:2006+A1:2010, Definition 3.6]
3.5
deviation from concentricity
half of the difference between the maximum and minimum wall thicknesses at the same cross-section of
the tube
[SOURCE: EN 1057:2006+A1:2010, Definition 3.7]
3.6
production batch
definite quantity of products of the same form, the same material condition and the same cross-
sectional dimensions manufactured during the same production sequence under uniform conditions
[SOURCE: EN 1057:2006+A1:2010, Definition 3.8]
8
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
3.7
permanently marked
marked in such a way that the marking will remain readable up to the end of the life on the installation
EXAMPLE Stamping, etching or engraving.
[SOURCE: EN 1057:2006+A1:2010, Definition 3.9]
3.8
durably marked
marked in such a way that the marking will remain readable up to the time of commissioning of the
installation
EXAMPLE Ink marking.
[SOURCE: EN 1057:2006+A1:2010, Definition 3.10]
4 Designations
4.1 Material
4.1.1 General
The material is designated either by symbol or number (see 6.1).
4.1.2 Symbol
The material symbol designation is based on the designation system given in ISO 1190-1:1982.
4.1.3 Number
The material number designation is in accordance with the system given in EN 1412:2016.
4.2 Material condition
For the purposes of this document, the following designation, which is in accordance with the system
given in EN 1173:2008, applies for the material condition (see Table 3):
R. Material condition designated by the minimum value of tensile strength requirement for the product
with mandatory tensile strength and elongation requirements.
4.3 Product
The product designation provides a standardized pattern of designation from which a rapid and
unequivocal description of a product is conveyed in communication. It provides mutual comprehension
at the international level with regard to products which meet the requirements of the relevant
European Standard.
The product designation is no substitute for the full content of the standard.
The product designation for products to this European Standard shall consist of:
— denomination (Tube);
— number of this European Standard (EN 12735-1);
— material designation, either symbol or number (see Table 1 and Table 2);
— material condition designation (see Table 3);
9
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SIST EN 12735-1:2020
EN 12735-1:2020 (E)
— nominal cross-sectional dimensions in millimetres: outside diameter × wall thickness (see Table 4).
The derivation of a product designation is shown in the following example.
EXAMPLE Tube conforming to this document, in material designated either Cu-DHP or CW024A, in material
condition R290 (hard), nominal outside diameter 28 mm, nominal wall thickness 1,5 mm, will be designated as
follows:
Figure 1 — Example of a product designation
5 Ordering information
In order to facilitate the enquiry, order and confirmation of order procedures between the purchaser
and the supplier, the purchaser shall state on his enquiry and order the following information:
a) quantity of product required (length, mass);
b) denomination (Tube);
c) reference to this document (EN 12735-1);
d) material designation (see Table 1 and Table 2);
e) material condition designation (see 4.2 and Table 3);
f) nominal cross-sectional dimensions: outside diameter × wall thickness (see Table 4);
g) nominal length (see 10.2);
h) form of delivery (see 10.3).
In addition, the purchaser shall also state on the enquiry and order the following, if required:
i) whether a declaration of conformity is required (see 9.1);
j) w
...
SLOVENSKI STANDARD
oSIST prEN 12735-1:2019
01-januar-2019
Baker in bakrove zlitine - Nevarjene okrogle bakrene 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: prEN 12735-1
ICS:
23.040.15 Cevi iz neželeznih kovin Non-ferrous metal pipes
77.150.30 Bakreni izdelki Copper products
oSIST prEN 12735-1:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 12735-1:2019
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oSIST prEN 12735-1:2019
DRAFT
EUROPEAN STANDARD
prEN 12735-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2018
ICS 23.040.15 Will supersede 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 draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 133.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12735-1:2018 E
worldwide for CEN national Members.
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oSIST prEN 12735-1:2019
prEN 12735-1:2018 (E)
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
4.1.1 General . 9
4.1.2 Symbol . 9
4.1.3 Number . 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 . 12
6.3.1 General . 12
6.3.2 Nominal dimensions . 12
6.3.3 Tolerances on outside diameter . 14
6.3.4 Tolerances on wall thickness . 15
6.3.5 Tolerances on length. 16
6.3.6 Tolerances of form . 16
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
2
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oSIST prEN 12735-1:2019
prEN 12735-1:2018 (E)
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
3
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oSIST prEN 12735-1:2019
prEN 12735-1:2018 (E)
European foreword
This document (prEN 12735-1:2018) has been prepared by Technical Committee CEN/TC 133 “Copper
and copper alloys”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede 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 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 dimamter 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) 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;
4
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oSIST prEN 12735-1:2019
prEN 12735-1:2018 (E)
— 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.
5
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oSIST prEN 12735-1:2019
prEN 12735-1:2018 (E)
Introduction
It is recommended that tubes manufactured to this document are certified as conforming to the
requirements of this standard based on continuing surveillance which should be coupled with an
assessment of a supplier's certified quality management system.
NOTE It is advised to take appropriate precautions if applying insulating material because it could be
detrimental to the tube.
6
---------------------- Page: 8 ----------------------
oSIST prEN 12735-1:2019
prEN 12735-1:2018 (E)
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 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 723, Copper and copper alloys — Combustion method for determination of the carbon content on the
inner surface of copper tubes or fittings
EN 1173, Copper and copper alloys — Material condition designation
EN 1412, Copper and copper alloys — European numbering system
EN 1655, Copper and copper alloys — Declarations of conformity
EN 1971-1, Copper and copper alloys — Eddy current test for measuring defects on seamless round copper
and copper alloy tubes — Part 1: Test with an encircling test coil on the outer surface
EN 1971-2, Copper and copper alloys — Eddy current test for measuring defects on seamless round copper
and copper alloy tubes — Part 2: Test with an internal probe on the inner surface
EN 10204:2004, Metallic products — Types of inspection documents
EN 16117-1, Copper and copper alloys — Determination of copper content — Part 1: Electrolytic
determination of copper in materials with copper content less than 99,85 %
EN 16117-2, Copper and copper alloys — Determination of copper content — Part 2: Electrolytic
determination of copper in materials with copper content higher than 99,80 %
EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1)
EN ISO 6708, Pipework components — Definition and selection of DN (nominal size) (ISO 6708)
EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1)
EN ISO 8493, Metallic materials — Tube — Drift-expanding test (ISO 8493)
ISO 1190-1, Copper and copper alloys — Code of designation — Part 1: Designation of materials
ISO 4741, Copper and copper alloys — Determination of phosphorus content — Molybdovanadate
spectrometric method
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3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
seamless round tube
hollow semi-finished product, circular in cross-section having a uniform wall thickness, which at all
stages of production has a continuous periphery
3.2
coil
winding in which the turns either are arranged into layers parallel to its axis such that successive turns
in a given layer are next to one another (LWC – Level Wound Coil) or are spirally arranged (SWC –
Spiral Wound Coil)
3.3
mean diameter
arithmetical mean of the maximum and minimum outside diameters through the same cross-section of
the tube
[SOURCE: EN 1057:2006+A1:2010, Definition 3.5]
3.4
deviation from circular form
difference between the maximum and minimum outside diameters measured at any one cross-section
of the tube
[SOURCE: EN 1057:2006+A1:2010, Definition 3.6]
3.5
deviation from concentricity
half of the difference between the maximum and minimum wall thicknesses at the same cross-section of
the tube
[SOURCE: EN 1057:2006+A1:2010, Definition 3.7]
3.6
production batch
definite quantity of products of the same form, the same material condition and the same cross-
sectional dimensions manufactured during the same production sequence under uniform conditions
[SOURCE: EN 1057:2006+A1:2010, Definition 3.8]
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3.7
permanently marked
marked in such a way that the marking will remain readable up to the end of the life on the installation
EXAMPLE Stamping, etching or engraving.
[SOURCE: EN 1057:2006+A1:2010, Definition 3.9]
3.8
durably marked
marked in such a way that the marking will remain readable up to the time of commissioning of the
installation
EXAMPLE Ink marking.
[SOURCE: EN 1057:2006+A1:2010, Definition 3.10]
4 Designations
4.1 Material
4.1.1 General
The material is designated either by symbol or number (see 6.1).
4.1.2 Symbol
The material symbol designation is based on the designation system given in ISO 1190-1.
4.1.3 Number
The material number designation is in accordance with the system given in EN 1412.
4.2 Material condition
For the purposes of this document, the following designation, which is in accordance with the system
given in EN 1173, applies for the material condition (see Table 3):
R. Material condition designated by the minimum value of tensile strength requirement for the product
with mandatory tensile strength and elongation requirements.
4.3 Product
The product designation provides a standardized pattern of designation from which a rapid and
unequivocal description of a product is conveyed in communication. It provides mutual comprehension
at the international level with regard to products which meet the requirements of the relevant
European Standard.
The product designation is no substitute for the full content of the standard.
The product designation for products to this European Standard shall consist of:
— denomination (Tube);
— number of this European Standard (EN 12735-1);
— material designation, either symbol or number (see Table 1 and Table 2);
— material condition designation (see Table 3);
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— nominal cross-sectional dimensions in millimetres: outside diameter × wall thickness (see Table 4).
The derivation of a product designation is shown in the following example.
EXAMPLE Tube conforming to this European Standard, in material designated either Cu-DHP or CW024A, in
material condition R290 (hard), nominal outside diameter 28 mm, nominal wall thickness 1,5 mm, will be
designated as follows:
Tube - EN 12735-1 - Cu-DHP - R290 - 28 x 1,5
Denomination
Number of this European Standard
Material designation
Material condition designation
Nominal cross-sectional dimensions in millimetres
5 Ordering information
In order to facilitate the enquiry, order and confirmation of order procedures
...
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