1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designatedPart 1: Steel flangesBS EN 10921:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1092-1 April 2018 ICS 23.04
2、0.60 Supersedes EN 1092-1:2007+A1:2013English Version Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges Brides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, dsigne
3、s PN - Partie 1: Brides en acier Flansche und ihre Verbindungen - Runde Flansche fr Rohre, Armaturen, Formstcke und Zubehrteile, nach PN bezeichnet - Teil 1: Stahlflansche This European Standard was approved by CEN on 27 November 2017. CEN members are bound to comply with the CEN/CENELEC Internal Re
4、gulations 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 Centre or to any CEN me
5、mber. 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 official versions.
6、 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, Netherlands, Norway, Polan
7、d, Portugal, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of ex
8、ploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1092-1:2018 ENational forewordThis Published Document is the UK implementation of EN 10921:2018. It supersedes BS EN 10921:2007+A1:2013, which is withdrawn.The UK participation in its preparation was ent
9、rusted to Technical Committee PSE/15, Flanges.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Stan
10、dards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 93106 2ICS 23.040.60Compliance with a British Standard cannot confer immunity from legal obligations.This Published Document was published under the authority of the Standards Policy and Strategy Committee on 30 April 2018.
11、Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 10921:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1092-1 April 2018 ICS 23.040.60 Supersedes EN 1092-1:2007+A1:2013English Version Flanges and their joints - Circular flanges for pipes, valves, fitting
12、s and accessories, PN designated - Part 1: Steel flanges Brides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, dsignes PN - Partie 1: Brides en acier Flansche und ihre Verbindungen - Runde Flansche fr Rohre, Armaturen, Formstcke und Zubehrte
13、ile, nach PN bezeichnet - Teil 1: Stahlflansche This European Standard was approved by CEN on 27 November 2017. 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 alt
14、eration. 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 (English, French, German). A version in any other language ma
15、de 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, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Esto
16、nia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE
17、FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1092-1:2018 EBS EN 10921:20
18、18EN 1092-1:2018 (E) 2 Contents Page European foreword . 5 Introduction 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 10 4 Designation. 11 4.1 General . 11 4.2 Standard designation 11 5 General requirements 13 5.1 Materials 13 5.1.1 General . 13 5.1.2 Methods of manufacture related to
19、 base material . 13 5.2 Repairs by welding 14 5.3 Bolting 14 5.4 Gaskets . 15 5.5 Determination of p/T ratings 15 5.6 Dimensions . 15 5.6.1 Flanges and collars 15 5.6.2 Hubs 16 5.6.3 Threaded flanges 16 5.6.4 Bolt holes . 16 5.6.5 Lapped joints . 16 5.6.6 Collar types . 16 5.7 Facings 16 5.7.1 Types
20、 of facings . 16 5.7.2 Jointing face finish . 17 5.8 Surface finish of flanges and collars 17 5.8.1 Surface finish . 17 5.8.2 Spot facing or back facing of flanges . 18 5.9 Tolerances 18 5.10 Marking 19 5.10.1 General marking requirements 19 5.10.2 Stamping 19 5.10.3 Declaration of compliance 19 5.1
21、1 Welding 20 5.12 Inspection and testing 20 5.12.1 Inspection and testing of fusion welded joints 20 5.12.2 Inspection and testing of bent and electric welded flanges or collars from formed bars, sectional steel or band material 21 5.12.3 Inspection and testing of formed parts manufactured from base
22、 material other than forgings 22 5.12.4 Inspection and testing of close die flanges 23 5.12.5 Inspection and testing of other materials . 24 5.13 Certificates 24 BS EN 10921:2018EN 1092-1:2018 (E) 3 Annex A (normative) Wall thickness and end preparation for flanges type 11, 34, 35, 36, 37 and pipe n
23、ominal thicknesses for the use with type 01 flanges 83 A.1 Weld-end preparation for flanges types 11 and 34 83 A.2 Weld-end preparation for type 35 85 A.3 Weld end preparation for types 36 and 37 . 87 Annex B (informative) Material groups . 89 Annex C (informative) Approximate masses of flanges and
24、collars 91 Annex D (informative) Additional materials 101 Annex E (normative) Basis of flange calculation . 103 E.1 General 103 E.2 Calculation method . 103 E.3 Basic rules for calculation of flange connection . 103 E.3.1 General 103 E.3.2 Flanges . 104 E.3.3 Pipes . 104 E.3.4 Bolting/Tightening 105
25、 E.3.5 Gasket 105 Annex F (normative) Determination of p/T ratings . 107 F.1 General 107 F.1.1 Reference temperature (RT) . 107 F.1.2 Application limits and formulae 107 F.2 Symbols, descriptions and units. 107 F.2.1 General 107 F.2.2 p/T ratings for materials with time independent nominal design st
26、ress . 108 F.2.3 p/T ratings for materials with time dependent nominal design stress . 108 F.2.4 Reference value for thickness (vR) 108 F.2.5 Nominal design stresses and safety factors for mean creep rupture strength . 108 F.2.6 Flanges made from steel castings 109 F.2.7 Rounding of maximum allowabl
27、e pressure at temperature 109 Annex G (normative) p/T ratings for a selection of EN materials . 110 G.1 General 110 G.1.1 p/T ratings . 110 G.1.2 Basics of determination of p/T ratings (see Annex F) 110 G.1.3 Application limits for creep range . 110 G.2 Non-austenitic steels 111 G.2.1 General 111 G.
28、2.2 List of materials 112 BS EN 10921:2018EN 1092-1:2018 (E) 4 G.2.3 p/T ratings 113 G.3 Austenitic and austenitic-ferritic steels . 125 G.3.1 General . 125 G.3.2 List of materials 125 G.3.3 p/T ratings 126 Annex H (informative) Rings for flanges with groove 138 Annex I (informative) Flanges with fi
29、xed inner diameter 139 I.1 General . 139 I.2 Scope . 139 Annex J (informative) Mating dimensions for flanges with higher DN 144 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2014/68/EU Pressure Equipment Directive aimed to be covere
30、d . 146 Bibliography . 147 BS EN 10921:2018EN 1092-1:2018 (E) 5 European foreword This document (EN 1092-1:2018) has been prepared by Technical Committee CEN/TC 74 “Flanges and their joints”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national stan
31、dard, either by publication of an identical text or by endorsement, at the latest by October 2018 and conflicting national standards shall be withdrawn at the latest by October 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
32、 CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1092-1:2007+A1:2013. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of E
33、U Directive 2014/68/EU. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. The major changes in comparison with EN 1092-1:2007+A1:2013 include: a) standard references were updated; b) several changes were made in some synoptic tables; c) chan
34、ges were implemented in thicknesses for types 36 and 37; d) flanges Type 5 for PN 160 to PN 400 were implemented. EN 1092, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated, consists of the following four parts: Part 1: Steel flanges; Part 2: Cast i
35、ron flanges; Part 3: Copper alloy flanges; Part 4: Aluminium alloy flanges. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, D
36、enmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS
37、EN 10921:2018EN 1092-1:2018 (E) 6 Introduction When the Technical Committee CEN/TC 74 started its work of producing this European Standard, it took as its basis the International Standard ISO 7005-1, Steel flanges. In taking this decision, CEN/TC 74, agreed that this standard would differ significan
38、tly from the ISO standard in respect of the following: a) whereas ISO 7005-1 included in its scope both the original DIN based flanges and also the original ANSI/ASME based flanges, EN 1092-1 contains only the PN based flanges. CEN/TC 74 has produced a separate series of standards, EN 1759-1, EN 175
39、9-3 and EN 1759-4, dealing with the ANSI/ASME based flanges in their original Class designations; b) the opportunity was taken to revise some of the technical requirements applicable to the DIN origin flanges. Consequently, while the mating dimensions, the flange and facing types and designations ar
40、e compatible with those given in ISO 7005-1, it is important to take account of the following differences which exist in EN 1092-1: 1) the p/T ratings of this standard have been reduced in many cases by either limiting the lower temperature ratings which can no longer exceed the PN value, or by incr
41、easing the rate at which allowable pressures shall reduce with increase in temperature; 2) in addition to the range of PN 2,5 to PN 40 DIN origin flanges contained in the ISO standard, EN 1092-1 also includes flanges up to PN 400. BS EN 10921:2018EN 1092-1:2018 (E) 7 1 Scope This European Standard f
42、or a single series of flanges specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 400 and nominal sizes from DN 10 to DN 4000. This European Standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange jointing face surfac
43、e finish, marking, materials, pressure/ temperature ratings and approximate flange masses. For the purpose of this European Standard, “flanges” include also lapped ends and collars. This European Standard applies to flanges manufactured in accordance with the methods described in Table 1. Non-gasket
44、ed pipe joints are outside the scope of this European Standard. 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, th
45、e latest edition of the referenced document (including any amendments) applies. EN 1514-1:1997, Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts EN 1514-2:2014, Flanges and their joints - Gaskets for PN-designated
46、flanges - Part 2: Spiral wound gaskets for use with steel flanges EN 1515-2:2001, Flanges and their joints - Bolting - Part 2: Classification of bolt materials for steel flanges, PN designated EN 1515-4:2009, Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to
47、the Pressure Equipment Directive 97/23/EC EN 1591-1:2013, Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation EN 1708-1:2010, Welding - Basic welded joint details in steel - Part 1: Pressurized components EN 10021:2006, General technical delivery co
48、nditions for steel products EN 10028-2:2017, Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10028-3:2017, Flat products made of steels for pressure purposes - Part 3: Weldable fine grain steels, normalized EN
49、10028-4:2017, Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties EN 10028-7:2016, Flat products made of steels for pressure purposes - Part 7: Stainless steels EN 10160:1999, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection method) EN 10204:2004, Metallic products - Types of inspection documents BS EN 10921:2018EN 1092-1:2018 (E) 8 EN 10213:2007+A1:2016, Steel castings for pressure purposes EN 10216-2:2013, Seamless steel tubes fo
