EN 1092-1:2007+A1:2013

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

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

!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

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
(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 SIST EN 1092-1:2007+A1:2013

4 Designation 4.1 General Table 6 specifies the flange types and collar types. Figures 1 and 2 show flange types and collar types with the relevant flange type numbers. Flanges shall be
denoted with "flange type" and the "flange description". Collar components shall be denoted with collar type and the collar description. Figure 3 shows flange facing types, which may be used with the flanges or components shown in Figures 1 and 2. Flange facings shall be denoted with "type" and the relevant symbol. The range of DN, applicable to each flange type and collar and to each PN, shall be as given in Table 7, however not all dimensions are existing for each type. 4.2 Standard designation Flanges and collars in accordance with this standard shall be designated with the following: a) designation, e.g. flange, lapped end or collar; b) number of this European Standard, i.e. EN 1092-1; c) number of flange type or collar type in accordance with Figures 1 and 2; d) type of flange facing in accordance with Figure 3; e) DN (nominal size); f) bore diameter only if not according to this standard (for sizes greater than DN 600); B1 (only for types 01, 12 and 32); B2 (only for type 02); B3 (only for type 04); SIST EN 1092-1:2007+A1:2013

Flange EN 1092-1/11/B2/DN 200 × 9/PN 100/P245GH EXAMPLE 2 Designation of a flange type 01 of nominal size DN 800, with bore diameter B1 = 818 mm, PN 6, made of mate-rial P265GH:
Flange EN 1092-1/01/DN 800/818/PN 6/P265GH EXAMPLE 3 Designation of a collar type 32 of nominal size DN 400, PN 10 and made of material P265GH:
Collar EN 1092-1/32/DN 400/PN 10/P265GH EXAMPLE 4 Designation of a flange type 02 of nominal size DN 400, PN 10 and made of material 1.0425:
Flange EN 1092-1/02/DN 400/PN 10/1.0425
5 General requirements 5.1 Materials 5.1.1 General Flanges and collars to be used in pressure equipment shall be manufactured from materials fulfilling the essential safety requirements of the Directive 97/23/EC. Materials specifications which meet the requirements for this European Standard are given in Table 9 (see also Annex D). Collars type 35 to 37 shall only be manufactured of austenitic/austenitic ferritic steel. The fabricated flange shall fulfil the mechanical properties of the material standard. WARNING — The restrictions of the different material standards have to be followed. !NOTE 1 The materials given in Table 9 (see also Annex D) are tabulated in material groups containing materials of similar chemical/mechanical properties and corrosion resistance in order to facilitate an equivalent application of materials in a group depending on pressure, temperature and fluid." NOTE 2 The materials of ancillary components (for example rings according to Annex H) are not within the scope of this European Standard. 5.1.2 Methods of manufacture related to base material Methods of manufacture see Table 1. SIST EN 1092-1:2007+A1:2013

electric welded form bars, sec-tional steel or strip b, c, d, e Pressed from welded or seamless pipes or flat products 01
(Plate flange for welding) yes no yes yes yes no 02
(Loose plate flange for Types 32—37) yes no yes yes yes no 04
(Loose plate flange for Type 34) yes no yes yes yes no 05
(Blind flange) yes no yes yes no no 11
(Weld-neck flange) yes no no yes yes, for
≥ DN 700 no 12
(Hubbed slip-on flange for welding) yes no no yes no no 13
(Hubbed threaded flange) yes no no yes no no 21
(Integral flange) yes yes no yes no no 32
(Weld-on plate collar) yes no yes yes yes no 33
(Lapped end pipe) yes no yes !no" yes !no" 34
(Weld-neck collar) yes yes no yes yes no 35
(Welding neck) yes no
yes yes yes no 36
(Pressed collar with long neck) yes no no no yes yes 37
(Pressed collar) yes no yes !yes" yes !no" a Seamless rolled, pressed, forged. b Only one radial weld is allowed under DN 1800. !If using cut strips for manufacturing, the through thickness direction of the strip for type 11 and 34 has to be perpendicular to the flange centerline, for Type 01, 02, 04 and 32 in the direction of the flange centreline." c For welding see 5.11. d Welded flanges allowed only for an application up to 370 °C in conformance with EN 13480-3:2002, D.4.4. e In case flanges are made by cold forming of a base material e.g. flat product, some mechanical properties, like elongation after fracture (A) and impact energy (KV), will be impaired due to cold forming without subsequently heat treatment.
5.2 Repairs by welding With the exception of weld repairs according to 5.11 repairs by welding are permitted only by written agreement of the purchaser. Within the certificate for material or component relevant documents shall be noted, that approved welding proce-dure and welders qualification (see 5.11) have been applied. 5.3 Bolting Flanges shall be suitable for use with the number and size of bolting as specified in Tables 10 to 21. The bolting shall be chosen by the equipment manufacturer according to the pressure, temperature, flange material and gasket so that the flanged joint remains tight under the expected operating conditions. For selection of bolting, see EN 1515-1, for combination of the materials of flanges and bolting see EN 1515-2, for information. 5.4 Gaskets The various gasket types, dimensions, design characteristics and materials used are not within the scope of this European Standard. Dimensions of gaskets are given in the series of standards EN 1514. 5.5 Determination of p/t ratings p/t ratings for flanges according to this standard shall be calculated in accordance with the rules given in Annex F. SIST EN 1092-1:2007+A1:2013

50 B2 b, C, D, G, H Turning c — 0,8
3,2
3,2
12,5 NOTE For certain applications, e.g. low temperature gases, it may be necessary to stipulate closer control to the surface finish. a Ra and Rz are defined in EN ISO 4287. b Types B1 and B2 are raised face (type B) flanges with different specified surface roughness values.
B1 : Standard facing for all PN numbers.
B2 : Only if agreed between the purchaser and the flange manufacturer. c The term 'turning' includes any method of machine operation producing either serrated concentric or serrated spiral grooves.
5.8 Surface finish of flanges and collars 5.8.1 Surface finish The surface finish of flanges and collars shall be according to Table 3. The given surface roughness values apply to as-delivered condition, unless otherwise specified by the purchaser. SIST EN 1092-1:2007+A1:2013

b c 02 (Loose plate flange for Types 32—37) 25
b
04 (Loose plate flange for Type 34) 25
b
05 (Blind flange) 25
n.a. b c 11 (Weld-neck flange) 25 a 160 a 25 a 160 a b c 12 (Hubbed slip-on flange for welding) 25 a 160 a 25 a 160 a b c 13 (Hubbed threaded flange) 25 a 160 a See thread standard b c 21 (Integral flange) 25 a 160 a 25 a 160 a
c 32 (Weld-on plate collar) 25
33 (Lapped end pipe) 25!a" 160
25!a" 160
34 (Weld-neck collar) 25 a 160 a 25 a 160 a
35 (Weldring neck) 25 a 160 a 25 a 160 a
36 (Pressed collar with long neck) 25 a 160 a 25 a 160 a
37 (Pressed collar) 25 a 160 a 25 a 160 a
a Or up to PN 40 un-machined. b Bolt holes > PN 40 only drilled. c Chip machining sp
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