Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges

This European Standard for 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 surface 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-gasketed pipe joints are outside the scope of this European Standard.

Flansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 1: Stahlflansche

Diese Europäische Norm über eine einzelne Flanschreihe legt Anforderungen fest für runde Stahlflansche mit den PN-Stufen PN 2,5 bis PN 400 und den Nennweiten DN 10 bis DN 4000.
Diese Norm legt die Flanschtypen und ihre Dichtflächenformen, Maße, Toleranzen, Gewinde, Schrauben-größen, Oberflächenbeschaffenheit der Dichtflächen der Flanschverbindung, Kennzeichnung, Werkstoffe, Druck/Temperatur-Zuordnungen und ungefähre Flanschgewichte fest.
Für die Anwendung dieser Europäischen Norm umfassen „Flansche“ auch Bördel und Bunde.
Diese Norm gilt für Flansche, die nach den in Tabelle 1 beschriebenen Verfahren hergestellt werden.
Rohrverbindungen ohne Dichtungen fallen nicht in den Anwendungsbereich dieser Norm.

Brides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, désignées PN - Partie 1: Brides en acier

La présente Norme européenne pour un seul système de brides spécifie les prescriptions pour les brides circulaires en acier avec les désignations PN 2,5 à PN 400 et les diamètres nominaux DN 10 à DN 4000.
La présente Norme européenne définit les types de brides et leurs portées de joint, les dimensions, les tolérances, les filetages, les dimensions des boulons, les états de surface des faces de joints des brides, le marquage, les matériaux, les relations pression/température et les masses approximatives des brides.
Pour les besoins de la présente Norme européenne, le terme « brides » inclut aussi les collets et les extrémités embouties à souder.
La présente Norme européenne s'applique aux brides fabriquées selon les méthodes décrites au Tableau 1.
Les assemblages de tuyauteries sans joints se trouvent hors du domaine d'application de la présente norme.

Prirobnice in prirobnični spoji - Okrogle prirobnice za cevi, ventile, fitinge in pribor z oznako PN - 1. del: Jeklene prirobnice (vključno z dopolnilom A1)

Ta evropski standard za posamezni niz prirobnic določa zahteve za okrogle jeklene prirobnice z oznakami PN od PN 2,5 do PN 400 in nominalno velikostjo od DN 10 do DN 4000. Ta evropski standard določa vrste prirobnic in njihove prevleke, mere, tolerance, navoje, velikosti vijakov, površinski premaz stične ploskve prirobnice, označevanje, materiale, vrednosti tlaka/temperature in približne mase prirobnic. Za namene tega evropskega standarda vključujejo »prirobnice« tudi preklopljene konce in obroče. Ta evropski standard velja za prirobnice, proizvedene v skladu z metodami, opisanimi v preglednici 1. Spoji cevi brez tesnil ne spadajo v področje uporabe tega evropskega standarda.

General Information

Status
Withdrawn
Publication Date
22-Jan-2013
Withdrawal Date
10-Apr-2018
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
11-Apr-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 1: StahlflanscheBrides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, désignées PN - Partie 1: Brides en acierFlanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges23.040.60Prirobnice, oglavki in spojni elementiFlanges, couplings and jointsICS:Ta slovenski standard je istoveten z:EN 1092-1:2007+A1:2013SIST EN 1092-1:2007+A1:2013en,fr,de01-julij-2013SIST EN 1092-1:2007+A1:2013SLOVENSKI

STANDARDSIST EN 1092-1:20071DGRPHãþD
SIST EN 1092-1:2007+A1:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1092-1:2007+A1
January 2013 ICS 23.040.60 Supersedes EN 1092-1:2007English 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, désignées PN - Partie 1: Brides en acier

Flansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 1: Stahlflansche This European Standard was approved by CEN on 23 June 2007 and includes Amendment 1 approved by CEN on 24 November 2012.

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 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 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, 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, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1092-1:2007+A1:2013: ESIST EN 1092-1:2007+A1:2013

EN 1092-1:2007+A1:2013 (E) 2 Contents Page Foreword ...................................................................................................................................................................... 4 Introduction ................................................................................................................................................................. 5 1 Scope .............................................................................................................................................................. 6 2 Normative references .................................................................................................................................... 6 3 Terms and definitions ................................................................................................................................... 8 4 Designation .................................................................................................................................................... 9 4.1 General ............................................................................................................................................................ 9 4.2 Standard designation .................................................................................................................................... 9 5 General requirements .................................................................................................................................. 10 5.1 Materials ....................................................................................................................................................... 10 5.1.1 General .......................................................................................................................................................... 10 5.1.2 Methods of manufacture related to base material .................................................................................... 10 5.2 Repairs by welding ...................................................................................................................................... 11 5.3 Bolting ........................................................................................................................................................... 11 5.4 Gaskets ......................................................................................................................................................... 11 5.5 Determination of p/t ratings ........................................................................................................................ 11 5.6 Dimensions ................................................................................................................................................... 12 5.6.1 Flanges and collars ..................................................................................................................................... 12 5.6.2 Hubs .............................................................................................................................................................. 12 5.6.3 Threaded flanges ......................................................................................................................................... 13 5.6.4 Bolt holes ...................................................................................................................................................... 13 5.6.5 Lapped joints ................................................................................................................................................ 13 5.6.6 Collar types .................................................................................................................................................. 13 5.7 Facings ......................................................................................................................................................... 13 5.7.1 Types of facings........................................................................................................................................... 13 5.7.2 Jointing face finish ...................................................................................................................................... 13 5.8 Surface finish of flanges and collars ......................................................................................................... 14 5.8.1 Surface finish ............................................................................................................................................... 14 5.8.2 Spot facing or back facing of flanges ........................................................................................................ 15 5.9 Tolerances .................................................................................................................................................... 15 5.10 Marking ......................................................................................................................................................... 15 5.10.1 General marking requirements ................................................................................................................... 15 5.10.2 Stamping ....................................................................................................................................................... 16 5.10.3 Declaration of compliance .......................................................................................................................... 16 5.11 Welding ......................................................................................................................................................... 16 5.12 Inspection and testing ................................................................................................................................. 17 5.12.1 Inspection and testing of fusion welded joints ........................................................................................ 17 5.12.2 Inspection and testing of !bent" and electric welded flanges or collars from formed bars, sectional steel or band material ................................................................................................................. 17 5.12.3 Inspection and testing of formed parts manufactured from base material other than forgings ......... 18 5.12.4 Inspection and testing of other materials ................................................................................................. 19 5.13 Certificates ................................................................................................................................................... 19 Annex A (normative)

!Wall thickness and end preparation for flanges type 11, 34, 35, 36, 37 and pipe nominal thicknesses for the use with type 01 flanges" ....................................................................... 67 A.1 Weld-end preparation for flanges types 11 and 34 .................................................................................. 67 A.2 Weld-end preparation for type 35 ............................................................................................................... 70 A.3 Weld end preparation for types 36 and 37 ................................................................................................ 71 Annex B (informative)

Material groups ................................................................................................................... 73 Annex C (informative)

Approximate masses of flanges and collars .................................................................... 75 Annex D (informative)

Additional materials ............................................................................................................ 83 Annex E (normative)

Basis of flange calculation ................................................................................................... 86 E.1 General .......................................................................................................................................................... 86 E.2 Calculation method...................................................................................................................................... 86 SIST EN 1092-1:2007+A1:2013

EN 1092-1:2007+A1:2013 (E) 3 E.3 Basic rules for calculation of flange connection ..................................................................................... 86 E.3.1 General.......................................................................................................................................................... 86 E.3.2 Flanges ......................................................................................................................................................... 86 E.3.3 Pipes ............................................................................................................................................................. 87 E.3.4 Bolting/Tightening ....................................................................................................................................... 87 E.3.5 Gasket ........................................................................................................................................................... 88 Annex F (normative)

Determination of p/t-ratings ................................................................................................. 89 F.1 General.......................................................................................................................................................... 89 F.1.1 Reference temperature (RT) ....................................................................................................................... 89 F.1.2 Application limits and equations ............................................................................................................... 89 F.2 Symbols, descriptions and units ............................................................................................................... 89 F.2.1 General.......................................................................................................................................................... 89 F.2.2 p/t-Ratings for materials with time independent nominal design stress ............................................... 90 F.2.3 p/t-Ratings for materials with time dependent nominal design stress .................................................. 90 F.2.4 Reference value for thickness (vR) ............................................................................................................. 90 F.2.5 Nominal design stresses and safety factors for mean creep rupture strength .................................... 90 F.2.6 Flanges made from steel castings ............................................................................................................. 91 F.2.7 Rounding of maximum allowable pressure at temperature .................................................................... 91 Annex G (normative)

p/t-ratings for a selection of EN materials ......................................................................... 92 G.1 General.......................................................................................................................................................... 92 G.1.1 p/t-ratings ..................................................................................................................................................... 92 G.1.2 Basics of determination of p/t-ratings (see Annex F) .............................................................................. 92 G.1.3 Application limits for creep range ............................................................................................................. 92 G.2 Non-austenitic steels ................................................................................................................................... 93 G.2.1 General.......................................................................................................................................................... 93 G.2.2 List of materials ........................................................................................................................................... 94 G.2.3 p/t-Ratings .................................................................................................................................................... 95 G.3 Austenitic and austenitic-ferritic steels .................................................................................................. 107 G.3.1 General........................................................................................................................................................ 107 G.3.2 List of materials ......................................................................................................................................... 107 G.3.3 p/t-Ratings .................................................................................................................................................. 108 Annex H (informative)

!Rings for flanges with groove" .............................................................................. 115 Annex I (informative)

Flanges with fixed inner diameter .................................................................................... 116 I.1 General........................................................................................................................................................ 116 I.2 Scope .......................................................................................................................................................... 116 Annex J (informative)

Mating dimensions for flanges with higher DN .............................................................. 119 Annex ZA (normative)

Relationship between this European Standard and the Essential Requirements of Directive 97/23/EC ................................................................................................................................. 121 Bibliography ............................................................................................................................................................ 123

SIST EN 1092-1:2007+A1:2013

EN 1092-1:2007+A1:2013 (E) 4 Foreword This document (EN 1092-1:2007+A1:2013) 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 standard, either by publication of an identical text or by endorsement, at the latest by July 2013, and conflicting national standards shall be withdrawn at the latest by July 2013. 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. This document supersedes !EN 1092-1:2007". This document includes Amendment 1, approved by CEN on 2012-11-24. The start and finish of text introduced or altered by amendment is indicated in the text by tags !". 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 EU Directive 97/23/EC. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. EN 1092 consists of the following four parts:  Part 1: Steel flanges;  Part 2: Cast iron flanges;  Part 3: Copper alloy flanges;  Part 4: Aluminium alloy flanges. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following coun-tries 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, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1092-1:2007+A1:2013

EN 1092-1:2007+A1:2013 (E) 5 Introduction When the Technical Committee CEN/TC 74 commenced 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 significantly 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 sepa-rate series of standards, EN 1759-1, EN 1759-3 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, whilst the mating dimensions, the flange and facing types and designations are 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 rat-ings which can no longer exceed the PN value, or by increasing the rate at which allowable pressures shall re-duce 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. Major changes against edition 2001: i. flanges PN 160, PN 250, PN 320 and PN 400 have been introduced; ii. further methods of manufacture have been introduced; iii. welding conditions, inspection and testing have been introduced; iv. flange facing height f1 changed back to former DN related dimensions; v. further collar types have been introduced; vi. materials have been updated; vii. new p/t-ratings are related to the flange material; viii. rings for tongue and groove flanges have been introduced; ix. the following flange types have been re-calculated according to the calculation method in EN 1591-1 with the basic rules as described in Annex E of this standard:  flanges type 11 for PN 2,5 to PN 400. Types 12 and 13 have been adjusted to the results for Type 11. As a result the thickness of some flanges above DN 500 had to be increased and the !wall thickness" had to be adjusted;  flanges type 05;  flanges type 01;  flanges type 02 with 32 resp. 33 up to DN 600 for PN 2,5 to PN 40;  flanges types 35, 36 and 37 for PN 10 to PN 40;  types 21 and 04 with 34 have not been re-calculated according to EN 1591-1. SIST EN 1092-1:2007+A1:2013

EN 1092-1:2007+A1:2013 (E) 6 1 Scope This European Standard for a single series of flanges specifies requirements for circular steel flanges in PN desig-nations 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 surface 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-gasketed 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 indispensa-ble for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies." !EN 287-1:2011", Qualification test of welders — Fusion welding — Part 1: Steels !deleted text" EN 571-1:1997, Non destructive testing — Penetrant testing — Part 1: General principles EN 764-5:2002, Pressure equipment — Part 5: Compliance and Inspection Documentation of Materials !deleted text" EN 1333:2006, Flanges and their joints — Pipework components — Definition and selection of PN EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld set-ters for fully mechanized and automatic welding of metallic materials EN 1435:1997, Non-destructive examination of welds — Radiographic examination of welded joints !EN 1591-1:2001+A1:2009", Flanges and their joints — Design rules for gasketed circular flange connections — Part 1: Calculation method !EN 1708-1:2010", Welding — Basic weld joint details in steel — Part 1: Pressurized components !deleted text" EN 4014:2004, Aerospace series — Inserts, thickwall, self-locking — Design standard !EN 10028-2:2009", Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specified elevated temperature properties !EN 10028-3:2009", Flat products made of steels for pressure purposes — Part 3: Weldable fine grain steels, normalized !EN 10028-4:2009", Flat products made of steels for pressure purposes — Part 4: Nickel alloy steels with specified low temperature properties !EN 10028-7:2007", 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) SIST EN 1092-1:2007+A1:2013

EN 1092-1:2007+A1:2013 (E) 7 EN 10204:2004, Metallic products — Types of inspection documents EN 10213-2:1995, Technical delivery conditions for steel castings for pressure purposes — Part 2: Steel grades for use at room temperature and elevated temperatures EN 10213-3:1995, Technical delivery conditions for steel castings for pressure purposes — Part 3: Steel grades for use at low temperatures EN 10213-4:1995, Technical delivery conditions for steel castings for pressure purposes — Part 4: Austenitic and austenitic-ferritic steel grades !EN 10216-2:2002+A2:2007", Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10216-3:2002, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes EN 10216-4:2002, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 4: Non-alloy and alloy steel tubes with specified low temperature properties EN 10216-5:2004, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 5: Stainless steel tubes EN 10217-2:2002, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-3:2002, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes EN 10217-7:2005, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 7: Stainless steel tubes EN 10220:2002, Seamless and welded steel tubes — Dimensions and masses per unit length EN 10222-2:1999, Steel forgings for pressure purposes — Part 2: Ferritic and martensitic steels with specified ele-vated temperature properties EN 10222-3:1998, Steel forgings for pressure purposes — Part 3: Nickel steels with specified low temperature properties EN 10222-4:1998, Steel forgings for pressure purposes — Part 4: Weldable fine grain steels with high proof strength EN 10222-5:1999, Steel forgings for pressure purposes — Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels EN 10226-3:2005, Pipe threads where pressure tight joints are made on the threads — Part 3: Verification by means of limit gauges !EN 10272:2007", Stainless steel bars for pressure purposes !EN 10273:2007", Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties EN 12517-1:2006, Non-destructive testing of welds — Part 1: Evaluation of welded joints in steel, nickel, titanium and their alloys by radiography — Acceptance levels !EN 13445-3:2009, Unfired pressure vessels — Part 3: Design" EN ISO 887:2000, Plain washers for metric bolts, screws and nuts for general purposes — General plan (ISO 887:2000) EN ISO 1127:1996, Stainless steel tubes — Dimensions, tolerances and conventional masses per unit length (ISO 1127:1992) SIST EN 1092-1:2007+A1:2013

EN 1092-1:2007+A1:2013 (E) 8 !EN ISO 5817:2007, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections (ISO 5817:2003, corrected version:2005, including Technical Corri-gendum 1:2006)" EN ISO 6708:1995, Pipe components — Definition and selection of DN (nominal size) (ISO 6708:1995) EN ISO 9692-2:1998, Welding and allied processes — Joint preparation — Part 2: Submerged arc welding of steels (ISO 9692-2:1998) !EN ISO 9712:2012, Non-destructive testing — Qualification and certification of NDT personnel

(ISO 9712:2012)" !EN ISO 11666:2010, Non-destructive testing of welds — Ultrasonic testing — Acceptance levels (ISO 11666:2010)" EN ISO 15614-1:2004, Specification and qualification of welding procedures for metallic materials — Welding pro-cedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2004) EN ISO 15614-13:2005, Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 13: Resistance butt and flash welding (ISO 15614-13:2005) !EN ISO 17637:2011, Non-destructive testing of welds — Visual testing of fusion-welded joints

(ISO 17637:2003)

EN ISO 17638:2009, Non-destructive testing of welds — Magnetic particle testing (ISO 17638:2003) EN ISO 17640:2010, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and as-sessment (ISO 17640:2010) EN ISO 23277:2009, Non-destructive testing of welds — Penetrant testing of welds — Acceptance levels (ISO 23277:2006) EN ISO 23278:2009, Non-destructive testing of welds — Magnetic particle testing of welds — Acceptance levels (ISO 23278:2006)" ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation ISO 2768-1:1989, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual toler-ance indications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 DN see EN ISO 6708 3.2 PN see EN 1333 3.3 maximum allowable pressure, PS maximum pressure for which the equipment is designed, as specified by the equipment manufacturer 3.4 maximum allowable temperature, TS maximum temperature for which the equipment is designed, as specified by the equipment manufacturer SIS

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