1、BRITISH STANDARD AEROSPACE SERIES Pipe coupling 8“ 30 in titanium alloy - Unions, bulkhead, long welded The European Standard EN 3691:ZOOl has the status of a British Standard ICs 49.025.01 BS EN 3691:2001 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 3691:2001 Amd. No
2、. Date National foreword Comments This British Standard is the official English language version of EN 3691:2001. The UK participation in its preparation was entrusted to Technical Committee ACE/12/1, Aerospace Fasteners, Fastening Systems, Details and Parts (International) which has the responsibil
3、ity to: - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organiz
4、ations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards
5、 Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard d
6、oes not of itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 November 2001 O BSI 12 November 20
7、01 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. ISBN O 580 37197 2 EUROPEAN STANDARD NORME EUROPENN
8、E EUROPISCHE NORM EN 3691 October 2001 ICs 49.080 English version Aerospace series - Pipe coupling 830 in titanium alloy - Unions, bulkhead, long welded Srie arospatiale - Systme de raccordement 8“30 en alliage de titane - Raccords droits pour traverse de cloison, type long, a souder Luft- und Raumf
9、ahrt - Rohrverschraubung 8“30 aus Titanlegierung - Gerade Schottverschraubung. lang, mit Anschweiende This European Standard was approved by CEN on 20 January 2001. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Stand
10、ard 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Ge
11、rman). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Fi
12、nland, France, Germany, Greece, Iceland, Ireland, Italy. Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussel
13、s O 2001 CEN All rights of exploitation in any form and by any means resewed worldwide for CEN national Members. Ref. No. EN 3691:2001 E EN 3691:2001 (E) Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carrie
14、d out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either b
15、y publication of an identical text or by endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest by April 2002. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to impleme
16、nt this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 2 EN 3691:2001 (E) 1 Scope This standard specifies the characteristics of uni
17、ons, bulkhead, long, welded end for pipe couplings 8“30, in titanium alloy, for aerospace applications. Nominal pressure: up to 28 O00 kPa Temperature range: - 55 C to + 135 C 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications.
18、 These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For u
19、ndated references, the latest edition of the publication referred to applies (including amendments). IS0 5855-3 Aerospace series - MJ threads - Part 3: Limit dimensions for fittings for fluid systems EN 2424 Aerospace series - Marking of aerospace products EN 2491 Aerospace series - Molybdenum disul
20、phide dry lubricants - Coating methods EN 2656 Aerospace series - Pipe coupling - Coupling ends, welded - Geometric configuration EN 3267 EN 3274 EN 3275 Aerospace series - Washers, bulkhead, in titanium alloy Aerospace series - Pipe coupling 830 - Thread ends - Geometric configurations Aerospace se
21、ries - Pipe coupling 830 up to 28 O00 kPa - Dynamic beam seal - Metric series - Technical specification Aerospace s ries -Titanium alloy TI-P64001 -Annealed - Bar for machining - DI 150 mm 8 EN 3311 EN 3314 Aerospace series - Titanium alloy TLP64001 - Solution treated and aged - Bar for machining-D
22、2 75 mm) 1) Published as AECMA Prestandard at the date of publication of this standard 3 EN 3691 :2001 (E) 3 Required characteristics 3.1 According to figures 1 and 2 and table 1. The values apply before lubricating. Dimensions not specified are at the manufacturers option provided that the qualific
23、ation and acceptance requirements of EN 3275, type II are met. 3.2 Surface roughness According to figure 1 and figure 2, unless otherwise specified in the design documentation. 3.3 Materials According to EN 331 1 or EN 3314 3.4 Surface treatment Weld end without surface treatment, min. 10 mm (outsid
24、e and bore diameters) Lubrication: according to EN 2491, on thread and sealing face Prior to application of the lubricant the surface shall be abrasive blasted using non-metallic grit. Configuration - Dimensions - Mass Film thickness: 0,005 mm to 0,013 mm Dimensions in millimetres -0.3 +0.3 a Area f
25、or marking Across flats s According to EN 2656 According to EN 3274, form J e Thread Note Pipe internal diameter dl in accordance with EN 2656 diameter dl in accordance with EN 3274 Dimensions in millimetres -0.3 +0,3 a Area for marking Across flats s According to EN 2656 According to EN 3274, form
26、J e Thread Note Pipe internal diameter d1 in accordance with EN 2656 c diameter dl in accordance with EN 3274 Figure 1 4 Figure 2 EN 3691:2001 (E) Code ab 0505 0605 0805 0806 Oo5 1008 1205 1206 1209 1405 1408 1410 1605 1610 1612 1805 I8O7 1810 1813 2006 2007 201 2 201 5 2208 2212 221 6 2508 2509 251
27、4 251 8 2808 2810 281 6 2820 3210 3212 a Corresponds Table 1 Thread 4969 MJlOxl MJ12 x 1,25 MJ14 x 1,5 MJ16 x 1,5 MJ18 x 1,5 MJ20 x 1,5 MJ22 x 1,5 MJ24 x 1,5 MJ27 x 1,5 MJ30 x 1,5 MJ33 x 1,5 MJ36 x 1,5 MJ39 x 1,5 to the pipe nominal outside diameter and wall thickness Dimensions in millimetres Il 10
28、,3 12 +0,2 5 h13 11,86 14 11,97 19 42 44 22 1 17 I 17,77 18 46 21,81 21,97 13 21 47 17 49 5 22 43,81 44,87 27 I 45,49 50 14 18 52 16 20 54 18 22 I 66.46 55 19 23 98,11 102,02 105,05 56 20 24 I 115.93 46 I 57,5 59,5 22 26 144,67 Relationship between code and pressure classification, according to EN 2
29、656 According to IS0 5855-3 According to hand EN 3274, form J 5 EN 3691 :2001 (E) 4 Designation EXAMPLE: Description block Identitiy block UNION, BULKHEAD EN3691 0805 Number of this standard Code (see table 1) NOTE: If necessary, the code I9005 shall be placed between the description block and the i
30、dentity block. 5 Marking According to EN 2424, style A and figures 1 and 2. 6 Technical specification According to EN 3275, type li 7 Installation details See figure 3 Key 1 Bulkhead 2 a Grip length Washer according to EN 3267 Thread Thread + OS Dimensions in millimetres Figure 3 6 BS EN 3691:ZOOl B
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