1、BSI Standards PublicationBS EN 4552:2015Aerospace series Pipecoupling 37, spherical, inheat resisting steel Straightnipples, welded end InchseriesBS EN 4552:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4552:2015. Itsupersedes BS EN 4552:2003 which is wit
2、hdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/69, Aerospace hydraulic systems, fluids andcomponents.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessary
3、provisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 88561 7ICS 49.080Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publishe
4、d under the authority of theStandards Policy and Strategy Committee on 31 July 2015.Amendments issued since publicationDate Text affectedBS EN 4552:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4552 July 2015 ICS 49.080 Supersedes EN 4552:2003English Version Aerospace series - Pipe coupli
5、ng 37, spherical, in heat resisting steel - Straight nipples, welded end - Inch series Srie arospatiale - Systme de raccordement sphrique 37, en acier rsistant chaud - Mamelons droits souder -Srie inch Luft- und Raumfahrt - Rohrverschraubung 37, aus hochwarmfestem Stahl - Gerade Verschraubungen zum
6、Anschweien - Inch-Reihe This European Standard was approved by CEN on 7 February 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists
7、 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 (English, French, German). A version in any other language made by translation under t
8、he 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, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugo
9、slav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN
10、 DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4552:2015 EBS EN 4552:2015EN 4552:2015 (E) 2 Contents Page Europ
11、ean foreword .3 1 Scope 4 2 Normative references 4 3 Required characteristics .4 4 Designation 9 5 Marking .9 6 Technical specification .9 Annex A (informative) Standard evolution form 10 BS EN 4552:2015EN 4552:2015 (E) 3 European foreword This document (EN 4552:2015) has been prepared by the Aerosp
12、ace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried 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 ASD, prior
13、to its presentation to CEN. 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 January 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. This document superse
14、des EN 4552:2003. 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 rights. According to the CEN-CENELEC Internal Regulations, the national stan
15、dards organizations of the following 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, L
16、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4552:2015EN 4552:2015 (E) 4 1 Scope This standard specifies the characteristics of swivel nuts for inch series pipe couplings, 37, in heat resisting
17、steel, for aerospace applications. Nominal pressure: Class D in accordance with ISO 6771. 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.
18、For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2424, Aerospace series Marking of aerospace products EN 3468, Aerospace series Steel FE-PA13 Softened 500 Rm 700 MPa Forgings De 100 mm 1)EN 3487, Aerospace series Steel FE-PA3601 (X6CrNiTi18
19、-10) Air melted Softened Bar for machining a or D 250 mm 500 MPa Rm 700 MPa EN 4549, Aerospace series Pipe coupling, in heat resisting steel or in heat resisting nickel alloy Coupling end, welded Design configuration Inch series EN 4550-1, Aerospace series Pipe coupling, 37 Design configuration Inch
20、 series Part 1: Male sealing ends, spherical EN 4560, Aerospace series Pipe coupling 37, spherical, up to 21 000 kPa Inch series Technical specification ISO 3161, Aerospace UNJ threads General requirements and limit dimensions ISO 6771, Aerospace Fluid systems and components Pressure and temperature
21、 classifications 3 Required characteristics 3.1 Configuration Dimensions Tolerances Masses See Figure 1 and Figure 2 and Table 1 to Table 4. Dimensions and tolerances are in millimetres. Table 1 Code Locking wire hole option N without locking wire hole Y with 2 locking wire holes 1)Published as ASD-
22、STAN Prestandard at the date of publication of this standard (http:/www.asd-stan.org/).BS EN 4552:2015EN 4552:2015 (E) 5 3.2 Materials EN 3468 with minimum hardness HB 140 or EN 3487 with minimum hardness HB 140. Key 1 Style A 2 Section A-A 3 R 2,5 to R 4,1 4 D except dimension B 5 Thread 6 ( E per
23、EN 4550-1) 7 3 positions 8 Marking 9 3 D view Figure 1 Hexagonal larger than thread Threads surface will be achieved by normal methods of manufacture. BS EN 4552:2015EN 4552:2015 (E) 6 Key 1 Style B otherwise same as style A 2 Section B-B 3 R 0,80 to R 1,80 4 Detail V 5 3 D view Figure 2 Hexagonal s
24、maller than thread BS EN 4552:2015EN 4552:2015 (E) 7 Table 2 Dimensional code aNominal diameter Wall thickness of tube Thread b A B C D E J Style K L Mass c 0,25 0,25 + 0,05 0,25 min. 0,25 min. max. A03 4,763 0,711 375 0-24UNJ-3A 21,60 11,45 EN4549A003 EN 4550-1-03 8,70 9,50 A 2,54 5,90 7,20 6,80 B0
25、3 0,889 EN4549B003 A04 6,350 0,711 437 5-20UNJF-3A 22,80 12,65 EN4549A004 EN 4550-1-04 11,10 12,24 7,50 8,80 9,55 B04 0,889 EN4549B004 A05 7,924 0,711 500 0-20UNJF-3A 23,40 13,20 EN4549A005 EN 4550-1-05 12,70 14,02 9,00 10,30 11,80 B05 0,889 EN4549B005 A06 9,525 0,711 562 5-18UNJF-3A 25,80 13,10 EN4
26、549A006 EN 4550-1-06 14,30 15,80 5,08 10,60 11,90 16,35 B06 0,889 EN4549B006 A08 12,700 0,711 750 0-16UNJF-3A 27,10 14,40 EN4549A008 EN 4550-1-08 15,90 17,63 B 13,80 15,00 24,50 B08 0,889 EN4549B008 A10 15,875 0,711 875 0-14UNJF-3A 29,45 16,75 EN4549A010 EN 4550-1-10 19,05 21,23 17,00 18,20 34,50 B1
27、0 0,889 EN4549B010 A12 19,050 0,711 1.062 5-12UNJ-3A 31,10 18,40 EN4549A012 EN 4550-1-12 20,65 23,06 20,10 21,40 42,70 B12 0,889 EN4549B012 A16 25,400 0,711 1.312 5-12UNJ-3A 32,60 19,90 EN4549A016 EN 4550-1-16 27,00 30,25 26,50 27,70 59,50 B16 0,889 EN4549B016 aThis code corresponds to: tube wall th
28、ickness (A: 0,711 mm; B: 0,889 mm); nominal diameter given in 16thof inches within two digits. bQuoted in inches in accordance with ISO 3161. cMass quoted in kg/1 000 parts. BS EN 4552:2015EN 4552:2015 (E) 8 Table 3 (For style B only) Dimensional code aNominal diameter H F T 0,25 0,10 A08 12,700 2,5
29、5 15,80 16,75 B08 A10 15,875 3,05 18,90 19,65 B10 A12 19,050 3,30 20,50 24,00 B12 A16 25,400 3,30 26,85 30,35 B16 aThis code corresponds to: tube wall thickness (A: 0,711 mm; B: 0,889 mm); nominal diameter given in 16thof inches within two digits. Table 4 (When locking wire hole option code is “Y“)
30、Dimensional code a Nominal diameter N P S 0,25 A03 04,775 03,20 1,45 1,25 B03 03,45 1,55 A04 06,350 04,30 1,45 B04 04,55 1,55 A05 07,925 05,20 1,65 B05 05,45 1,90 A06 09,525 06,10 1,65 2,55 B06 06,35 1,90 A08 12,700 07,25 1,65 B08 07,50 1,90 A10 15,875 08,65 1,65 B10 08,90 1,90 A12 19,050 10,05 1,65
31、 B12 10,30 1,90 A16 25,400 12,90 1,65 B16 13,40 1,90 aThis code corresponds to: tube wall thickness (A: 0,711 mm; B: 0,889 mm); nominal diameter given in 16thof inches within two digits. BS EN 4552:2015EN 4552:2015 (E) 9 4 Designation EXAMPLE Description block NIPPLE, STRAIGHT Identity block EN4552A
32、10N Number of this standard Dimensional code (see Table 2 and Table 4) Locking wire hole option code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking According to EN 2424, style A and Figure 1. 6 Technical specification A
33、ccording to EN 4560. BS EN 4552:2015EN 4552:2015 (E) 10 Annex A (informative) Standard evolution form MODIFICATION REASON AND VALIDATION Table 4 page 8. Before: Dimensions P A03 was 1,15 B03 was 1,30 A04 was 1,15 B04 was 1,30 A05 was 1,45 B05 was 1,60 After: Dimensions P A03 is 1,45 B03 is 1,55 A04
34、is 1,45 B04 is 1,55 A05 is 1,65 B05 is 1,90 Accordance with standard EN 4551. This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standar
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