1、November 2016 English price group 14No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.15!%qEnglish version EN
2、127352:2016,English translation of DIN EN 12735-2:2016-11Kupfer und Kupferlegierungen Nahtlose Rundrohre fr die Klte und Klimatechnik Teil 2: Rohre fr Apparate;Englische Fassung EN 127352:2016,Englische bersetzung von DIN EN 12735-2:2016-11Cuivre et alliages de cuivre Tubes ronds sans soudure pour l
3、air conditionn et la rfrigration Partie 2: Tubes pour le matriel;Version anglaise EN 127352:2016,Traduction anglaise de DIN EN 12735-2:2016-11SupersedesDIN EN 127352:201012www.beuth.deDocument comprises tz pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall b
4、e considered authoritative.11.16DIN EN 12735-2:2016-11 2 A comma is used as the decimal marker. National foreword This document (EN 12735-2:2016) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys” (Secretariat: DIN, Germany). The responsible German body involved in its pr
5、eparation was DIN-Normenausschuss Nichteisenmetalle (DIN Standards Committee Nonferrous Metals), Working Committee NA 066-02-03 AA Kupferrohre (Installation und Industrie). Amendments This standard differs from DIN EN 12735-2:2010-12 as follows: a) the range of outside diameters has been increased f
6、rom 3,97 mm to 219 mm (formerly 6 mm to 133 mm); b) the dimensions and tolerances for smooth tubes have been modified in Tables 2, 4 and 5, and the tolerances given in Tables 3 and 6 have been added; c) nominal outside diameters have been included in Table 1. Previous editions DIN EN 12735-2: 2001-0
7、7, 2005-07, 2010-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM 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 rond
8、s sans soudure pour lair conditionn et la rfrigration Partie 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/C
9、ENELEC 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 Centr
10、e 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
11、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, Netherla
12、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, 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
13、 of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12735-2:2016 EEN 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
14、condition 9 4.3 Product 9 5 Ordering information . 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 Fre
15、edom from defects . 18 6.7 Surface quality. 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 Declara
16、tion of conformity and inspection documentation . 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
17、 A.1.1 General . 23 A.1.2 Detection for non-local defects on coiled tubes 23 A.2 Hydrostatic test . 24 DIN EN 12735-2:2016-11 EN 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
18、to be covered . 25 Bibliography . 26 Tables 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
19、tubes in coils 14 Table 5 Tolerances on wall 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 Tabl
20、e 9 Recommended nominal outside diameters for 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 2
21、4 Table ZA.1 Correspondence between this European Standard and Annex I of Directive 2014/68/EU 25 DIN EN 12735-2:2016-11 EN 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
22、 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 December 2016 and conflicting national standards shall be withdrawn at the latest by December 2016. Attention is drawn to the possibil
23、ity that some of the elements of this document may 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 C
24、ommission 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. Within its programme of work, Technica
25、l Committee CEN/TC 133 requested CEN/TC 133/WG 3 “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
26、,97 mm up to 219 mm; b) Dimensions and tolerances 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 a
27、nd 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 an
28、d 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 DIN EN 12735-2:2016-11 EN 12
29、735-2:2016 (E) 5 EN 12452, Copper and copper alloys Rolled, 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 t
30、ubes 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 organizations of the following
31、 countries are bound to implement this European Standard: 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, Norwa
32、y, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12735-2:2016-11 EN 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
33、based on continuing surveillance which should be coupled with 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. DIN EN 12735-2:2016-11 EN 1
34、2735-2:2016 (E) 7 1 Scope This European Standard specifies the requirements, 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 condition
35、ing equipment. It is applicable to tubes with an outside diameter 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 refere
36、nces The following documents, in whole or in part, are normatively 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
37、 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 1655, Copper and copper alloys - Declarations of conformity EN 1971-1, Copper and copper a
38、lloys - 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: Tes
39、t with an internal probe on the inner surface EN 10204:2004, Metallic 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-
40、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 1553, Unalloyed copper containing not less than 99,90 % of copper - Determination of copper content - Electrolytic method ISO
41、 4741, Copper and copper alloys - Determination of phosphorus content - Molybdovanadate spectrometric method DIN EN 12735-2:2016-11 EN 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-f
42、inished product, circular in cross-section, made of copper, having a 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 su
43、ccessive 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
44、 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 c
45、ross-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 1057:200
46、6+A1:2010, definition 3.8 4 Designations 4.1 Material 4.1.1 General The material is designated either by symbol or number (see 6.1). DIN EN 12735-2:2016-11 EN 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 mate
47、rial number designation is in accordance with the system given in EN 1412. 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 des
48、ignated by the minimum value of tensile strength requirement for the product 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, e
49、longation and grain size 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 design
