ISO 6947 INTERNATIONAL STANDARD. Welding and allied processes Welding positions. Soudage et techniques connexes Positions de soudage

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1 Provläsningsexemplr / Preview INTERNATIONAL STANDARD ISO 6947 Third edition Welding nd llied processes Welding positions Soudge et techniques connexes Positions de soudge Reference number ISO 6947:2011(E) ISO 2011

2 ISO 6947:2011(E) Provläsningsexemplr / Preview COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no prt of this publiction my be reproduced or utilized in ny form or by ny mens, electronic or mechnicl, including photocopying nd microfilm, without permission in writing from either ISO t the ddress below or ISO's member body in the country of the requester. ISO copyright office Cse postle 56 CH-1211 Genev 20 Tel Fx E-mil copyright@iso.org Web Published in Switzerlnd ii ISO 2011 All rights reserved

3 Provläsningsexemplr / Preview ISO 6947:2011(E) Contents Pge Foreword...iv Introduction...v 1 Scope Terms nd definitions Welding positions Min welding positions Welding positions for production Welding positions for testing Designtion...5 Annex A (informtive) Limits of the slope of weld xis nd the rottion of the weld fce bout the weld xis for welding positions in production welds...7 Annex B (informtive) Comprison of interntionl, Europen nd US designtions...13 Bibliogrphy...17 ISO 2011 All rights reserved iii

4 ISO 6947:2011(E) Provläsningsexemplr / Preview Foreword ISO (the Interntionl Orgniztion for Stndrdiztion) is worldwide federtion of ntionl stndrds bodies (ISO member bodies). The work of prepring Interntionl Stndrds is normlly crried out through ISO technicl committees. Ech member body interested in subject for which technicl committee hs been estblished hs the right to be represented on tht committee. Interntionl orgniztions, governmentl nd non-governmentl, in liison with ISO, lso tke prt in the work. ISO collbortes closely with the Interntionl Electrotechnicl Commission (IEC) on ll mtters of electrotechnicl stndrdiztion. Interntionl Stndrds re drfted in ccordnce with the rules given in the ISO/IEC Directives, Prt 2. The min tsk of technicl committees is to prepre Interntionl Stndrds. Drft Interntionl Stndrds dopted by the technicl committees re circulted to the member bodies for voting. Publiction s n Interntionl Stndrd requires pprovl by t lest 75 % of the member bodies csting vote. Attention is drwn to the possibility tht some of the elements of this document my be the subject of ptent rights. ISO shll not be held responsible for identifying ny or ll such ptent rights. ISO 6947 ws prepred by Technicl Committee ISO/TC 44, Welding nd llied processes, Subcommittee SC 7, Representtion nd terms. This third edition cncels nd replces the second edition (ISO 6947:1990), which hs been techniclly revised. Requests for officil interprettions of ny spect of this Interntionl Stndrd should be directed to the Secretrit of ISO/TC 44/SC 7 vi your ntionl stndrds body. A complete listing of these bodies cn be found t iv ISO 2011 All rights reserved

5 Provläsningsexemplr / Preview ISO 6947:2011(E) Introduction This Interntionl Stndrd provides positions for stndrd discrete test piece orienttion PA, PB, H-L045, etc. tht hve been specified in this Interntionl Stndrd since the first edition (ISO 6947:1980). In this revision, positions re defined for production welding. These positions re flt, horizontl, verticl, nd overhed. Unlike testing positions, these positions re contiguous. The direction of welding is n essentil prmeter for determining the welding position, e.g. up or down. The welding position is not dependent on the geometricl rrngement of the joint, e.g. butt or fillet joint, or tht of the semi-finished product. Welds of ll types nd in ll directions re covered. The min positions hve been given symbols which cn esily be used for designtion purposes; these symbols were chosen independently of possible meningful bbrevitions, i.e. they re not derived from ny prticulr lnguge. The reltionship between testing positions nd production welding positions is specified elsewhere, e.g. in ISO 9606 [1] or ISO [2]. ISO 2011 All rights reserved v

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7 Provläsningsexemplr / Preview INTERNATIONAL STANDARD ISO 6947:2011(E) Welding nd llied processes Welding positions 1 Scope This Interntionl Stndrd defines welding positions for testing nd production, for butt nd fillet welds, in ll product forms. Annex A gives exmples of the limits of the slope of weld xis nd the rottion of the weld fce bout the weld xis for welding positions in production welds. Annex B provides comprison of Interntionl, Europen nd US designtions. 2 Terms nd definitions For the purposes of this document, the following terms nd definitions pply. 2.1 welding position position of weld in spce, which is defined reltive to the slope of the xis nd rottion of the fce of the weld reltive to the horizontl plne 2.2 min welding position welding position, designted PA, PB, PC, PD, PE, PF or PG NOTE For PA, PB, PC, PD nd PE, see Figure slope S ngle of the xis of the weld reltive to the min welding position 2.4 rottion R ngle of the fce of the weld reltive to the min welding position 2.5 inclined ngle L ngle of the xis of the pipe 3 Welding positions 3.1 Min welding positions The min welding positions re illustrted in Figure 1 with exmples of their ppliction for butt nd fillet welds in Figure 2. ISO 2011 All rights reserved 1

8 ISO 6947:2011(E) Provläsningsexemplr / Preview 1 PA 8 0º PB 2 7 PC PB PD 270º 90º PC 3 PD 6 180º 4 Key 1 flt 4 nd 6 horizontl overhed 2 nd 8 horizontl verticl 5 overhed 3 nd 7 horizontl PE 5 Figure 1 Min welding positions Exmples of min welding positions for butt nd fillet welds re illustrted in Figure 2. Arrow shows welding position. ) PA: flt position Arrow shows welding position. b) PB: horizontl verticl position Figure 2 Exmples of min welding positions (continued) 2 ISO 2011 All rights reserved