1、July 2016 English price group 6No 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 23.040.60!%XLH“2534137www.din.deDIN
2、EN 12760Industrial valves Socket welding ends for steel valves;English version EN 12760:2016,English translation of DIN EN 12760:2016-07Industriearmaturen Schweimuffenenden fr Armaturen aus Stahl;Englische Fassung EN 12760:2016,Englische bersetzung von DIN EN 12760:2016-07Robinetterie industrielle E
3、xtrmits emboter et souder pour appareils de robinetterie en acier;Version anglaise EN 12760:2016,Traduction anglaise de DIN EN 12760:2016-07SupersedesDIN EN 12760:1999-12www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Do
4、cument comprises 8 pages 06.16 DIN EN 12760:2016-07 2 A comma is used as the decimal marker. National foreword This document (EN 12760:2016) has been prepared by Technical Committee CEN/TC 69 “Industrial valves” (Secretariat: AFNOR, France). The responsible German body involved in its preparation wa
5、s DIN-Normenausschuss Armaturen (DIN Standards Committee Valves), Working Committee NA 003-01-01 AA Grundnormen. Amendments This standard differs from DIN EN 12760:1999-12 as follows: a) the standard has been harmonized with the present rules for the structure and drafting of CEN-CENELEC publication
6、s. Previous editions DIN 3292-2: 1964-02, 1978-02 DIN EN 12760: 1999-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12760 April 2016 ICS 23.040.60 Supersedes EN 12760:1999English Version Industrial valves - Socket welding ends for steel valves Robinetterie industrielle - Extrmits emboter et
7、 souder pour appareils de robinetterie en acier Industriearmaturen - Schweimuffenenden fr Armaturen aus Stahl This European Standard was approved by CEN on 3 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
8、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 (En
9、glish, 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
10、, 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, Spain, Sweden, Switzerla
11、nd, 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 worldwide for CEN national Me
12、mbers. Ref. No. EN 12760:2016 EEN 12760:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Requirements . 4 5 Designation 5 Annex A (informative) Recommended welding detail 6 DIN EN 12760:2016-07 EN 12760:2016 (E) 3 European foreword This
13、document (EN 12760:2016) has been prepared by Technical Committee CEN/TC 69 “Industrial valves”, the secretariat of which is held by AFNOR. 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 October
14、2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility 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 rig
15、hts. This document supersedes EN 12760:1999. The main change is the update of the standard to be in compliance with the present rules for the structure and drafting of CEN-CENELEC publications. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following c
16、ountries 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, Norway,
17、 Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12760:2016-07 EN 12760:2016 (E) 4 1 Scope This European Standard specifies the dimensions of socket welding ends of steel valves designed to be socket welded to standardised pipes in the
18、 size range DN 6 to DN 65. 2 Normative references 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 do
19、cument (including any amendments) applies. EN 736-1, Valves Terminology Part 1: Definition of types of valves EN 736-2, Valves Terminology Part 2: Definition of components of valves EN 736-3, Valves Terminology Part 3: Definition of terms ISO 4200, Plain end steel tubes, welded and seamless General
20、tables of dimensions and masses per unit length 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 736-1, EN 736-2 and EN 736-3 apply. 4 Requirements 4.1 Socket welding ends of steel valve bodies shall have the form shown in Figure 1 and dimensions as st
21、ated in Table 1. 4.2 The width of the flat welding surface, C, shall not be less than 0,81 x Pipe wall thickness as specified in ISO 4200 or 3 mm, whichever is the greater. Figure 1 Socket welding end detail DIN EN 12760:2016-07 EN 12760:2016 (E) 5 Table 1 Dimensions of socket welding ends Valve DN
22、(Nominal Size) DN 6 DN 8 DN 10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 DN 65 Inside diameter of socket max. 11,15 14,60 18,05 22,20 27,55 34,30 43,05 49,15 61,60 77,40 B in mm. min. 10,65 14,10 17,55 21,70 27,05 33,80 42,55 48,65 61,10 76,80 Depth of socket S in mm. min. 10,0 10,0 10,0 10,0 13,0 13,0 13
23、,0 13,0 16,0 16,0 5 Designation A socket welding end shall be designated by the following: the wording “socket welding end (SW)”; the number of this European Standard, i.e. EN 12760; the nominal size DN of the valve, e.g. DN 50. EXAMPLE Socket welding end (SW) EN 12760 DN 50. DIN EN 12760:2016-07 EN
24、 12760:2016 (E) 6 Annex A (informative) Recommended welding detail It is recommended that the width of fillet weld Cxas shown in Figure A.1 should not be less than 1,09 x pipe wall thickness or 3 mm, whichever is the greater. A gap of approximately 2 mm should be left between the bottom of the socket and the end of the pipe. Key Z 0,707 x Cxa Approximately 2,0 mm before welding Figure A.1 Recommended welding detail DIN EN 12760:2016-07
