1、BS EN 12735-2:2016Copper and copper alloys Seamless, round tubes for airconditioning and refrigerationPart 2: Tubes for equipmentBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 12735-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implem
2、entation of EN 12735-2:2016.It supersedes BS EN 12735-2:2010 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee NFE/34/1, Wrought and unwrought copper and copperalloys.A list of organizations represented on this committee can beobtained on request to its s
3、ecretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 90917 7ICS 23.040.15; 77.150.30; 91.140.30Compliance with a
4、British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2016.Amendments issued since publicationDate Text affectedBS EN 12735-2:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
5、 EN 12735-2 June 2016 ICS 23.040.15 Supersedes EN 12735-2:2010English Version Copper and copper alloys - Seamless, round tubes for air conditioning and refrigeration - Part 2: Tubes for equipment Cuivre et alliages de cuivre - Tubes ronds sans soudure pour lair conditionn et la rfrigration - Partie
6、2: Tubes pour le matriel Kupfer und Kupferlegierungen - Nahtlose Rundrohre fr die Klte- und Klimatechnik - Teil 2: Rohre fr Apparate This European Standard was approved by CEN on 28 February 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condition
7、s 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
8、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
9、 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, Slovakia, Sloveni
10、a, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved wo
11、rldwide for CEN national Members. Ref. No. EN 12735-2:2016 EBS EN 12735-2:2016EN 12735-2:2016 (E) 2 Contents Page European foreword . 4 Introduction 6 1 Scope 7 2 Normative references 7 3 Terms and definitions . 8 4 Designations 8 4.1 Material . 8 4.2 Material condition 9 4.3 Product 9 5 Ordering in
12、formation . 10 6 Requirements 11 6.1 Composition . 11 6.2 Mechanical properties and grain size . 11 6.3 Dimensions and tolerances for smooth tubes . 11 6.4 Dimensions and tolerances for inner finned tubes . 17 6.5 Drift expanding (for smooth tubes) . 18 6.6 Freedom from defects . 18 6.7 Surface qual
13、ity. 19 7 Sampling 19 8 Test methods . 20 8.1 Analysis 20 8.2 Tensile test . 20 8.3 Hardness test . 20 8.4 Estimation of average grain size . 20 8.5 Drift expanding test . 20 8.6 Carbon content test . 20 8.7 Freedom from defects test 20 8.8 Retests 21 9 Declaration of conformity and inspection docum
14、entation . 21 9.1 Declaration of conformity . 21 9.2 Inspection documentation 21 10 Packaging, marking and form of delivery . 21 10.1 Packaging and marking . 21 10.2 Form of delivery . 22 Annex A (normative) Freedom from defects test 23 A.1 Eddy current test 23 A.1.1 General . 23 A.1.2 Detection for
15、 non-local defects on coiled tubes 23 A.2 Hydrostatic test . 24 BS EN 12735-2:2016EN 12735-2:2016 (E) 3 A.3 Pneumatic test . 24 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered . 25 Bibliography . 26 Tables
16、Table 1 Mechanical properties and grain size 11 Table 2 Nominal outside diameters and wall thicknesses for smooth tubes 13 Table 3 Tolerances on outside diameter for smooth tubes in straight length 14 Table 4 Tolerances on mean outside diameter for smooth tubes in coils 14 Table 5 Tolerances on wall
17、 thickness for smooth tubes . 15 Table 6 Tolerances on wall thickness 15 Table 7 Tolerances on length for tubes supplied in straight lengths . 16 Table 8 Maximum deviation from circular form expressed as percentage of the nominal outside diameter . 16 Table 9 Recommended nominal outside diameters fo
18、r inner finned tubes 17 Table 10 Testing of drift expanding 18 Table 11 Permissible number of defects for coils 19 Table 12 Coil and reel dimensions 22 Table A.1 Maximum drill diameters for reference standard tube . 23 Table A.2 Hydrostatic pressure test 24 Table ZA.1 Correspondence between this Eur
19、opean Standard and Annex I of Directive 2014/68/EU 25 BS EN 12735-2:2016EN 12735-2:2016 (E) 4 European foreword This document (EN 12735-2:2016) 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 giv
20、en the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2016 and conflicting national standards shall be withdrawn at the latest by December 2016. Attention is drawn to the possibility that some of the elements of this document ma
21、y be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12735-2:2010. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association
22、, 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. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 3
23、“Copper tubes (installation and industrial)“ to revise EN 12735-2:2010. In comparison with the first edition of EN 12735-2:2010, the following significant technical changes were made: a) The size range of the outside diameter has been increased from 3,97 mm up to 219 mm; b) Dimensions and tolerances
24、 for smooth tubes have been modified in Tables 2, 4 and 5. The tolerances given in Tables 3 and 6 have been added; c) Nominal outside diameters have been added to Table 1. EN 12735, Copper and copper alloys Seamless, round tubes for air conditioning and refrigeration consists of two parts: Part 1: T
25、ubes 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 124
26、49, 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 BS EN 12735-2:2016EN 12735-2:2016 (E) 5 EN 12452, Copper and copper alloys Ro
27、lled, finned, seamless tubes for heat exchangers EN 12735-1, Copper and copper alloys Seamless, round copper tubes for air conditioning and refrigeration Part 1: Tubes for piping systems EN 13348, Copper and copper alloys Seamless, round copper tubes for medical gases or vacuum EN 13349, Copper and
28、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 organizations of the following countries are bound to implement this European Standa
29、rd: 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, Slovakia, Slovenia, Spai
30、n, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12735-2:2016EN 12735-2:2016 (E) 6 Introduction It is recommended that tubes manufactured to this standard are certified as conforming to the requirements of this European Standard based on continuing surveillance which should be coupled wi
31、th an assessment of a suppliers quality management system such as EN ISO 9001. NOTE It is advised to take appropriate precautions if applying insulating material because it could be detrimental to the copper tube. BS EN 12735-2:2016EN 12735-2:2016 (E) 7 1 Scope This European Standard specifies the r
32、equirements, sampling, test methods and conditions of delivery for seamless round copper tubes, smooth or inner finned, used for heat exchangers and their internal connecting pipes in the manufacturing of refrigeration and air conditioning equipment. It is applicable to tubes with an outside diamete
33、r from 3,97 mm up to and including 219 mm. NOTE The tubes are supplied in straight length in the material conditions hard, half-hard or skin hard or as coils in the material conditions light annealed or soft annealed. 2 Normative references The following documents, in whole or in part, are normative
34、ly referenced in this document and are indispensable for its application. 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 determina
35、tion of the carbon content on the inner surface of copper tubes or fittings EN 1173, Copper and copper alloys - Material condition designation EN 1655, Copper and copper alloys - Declarations of conformity EN 1971-1, Copper and copper alloys - Eddy current test for measuring defects on seamless roun
36、d 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, Met
37、allic products - Types of inspection documents EN ISO 2624, Copper and copper alloys - Estimation of average grain size (ISO 2624) EN ISO 6507-1, Metallic materials - Vickers hardness test - Part 1: Test method (ISO 6507-1) EN ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of test
38、 at room temperature (ISO 6892-1) EN ISO 8493, Metallic materials - Tube - Drift-expanding test (ISO 8493) ISO 1553, Unalloyed copper containing not less than 99,90 % of copper - Determination of copper content - Electrolytic method ISO 4741, Copper and copper alloys - Determination of phosphorus co
39、ntent - Molybdovanadate spectrometric method BS EN 12735-2:2016EN 12735-2:2016 (E) 8 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 seamless round copper tube hollow semi-finished product, circular in cross-section, made of copper, having a
40、uniform wall thickness, which at all stages of production has a continuous periphery SOURCE: EN 1057:2006+A1:2010, definition 3.1 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 Wo
41、und 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 mini
42、mum 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
43、 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 4 Designations 4.1 Material 4.1.1 General T
44、he material is designated either by symbol or number (see 6.1). BS EN 12735-2:2016EN 12735-2:2016 (E) 9 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.
45、 4.2 Material condition For the purposes of this European Standard, the following designation, which is in accordance with the system given in EN 1173, applies for the material condition (see Table 1): R Material condition designated by the minimum value of tensile strength requirement for the produ
46、ct with mandatory tensile strength and elongation requirements. Y. Material condition designated by the minimum value of 0,2 % proof strength requirement for the product with mandatory 0,2 % proof strength, tensile strength, elongation and grain size requirements. 4.3 Product The product designation
47、 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 des
48、ignation is no substitute for the full content of the standard. The product designation for products to this European Standard shall consist of: denomination (Copper tube); number of this European Standard (EN 12735-2); material condition designation (see Table 1); nominal cross-sectional dimensions
49、 in millimetres: outside diameter x wall thickness (see Table 2 and Table 9); inner surface type (the following designations shall be used as appropriate: S for smooth, F for finned). The derivation of a product designation is shown in the following example. EXAMPLE Copper tube conforming to this European Standard, in material condition Y040 (light annealed), nominal outside diameter 16 mm, nominal wall thickness 0,5 mm, smooth inner surface (S), will be designated as follo
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