SIST EN 1092-1:2002
(Main)Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges
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 100 and nominal sizes from DN 10 to DN 4000.
This 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.
This standard does not apply to flanges made from bar stock by turning, or to flanges of types 11, 12 and 13 made from plate material.
Flansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 1: Stahlflansche
Diese Europäische Norm über eine einzelne Flanschenreihe legt Anforderungen fest für runde Stahlflansche mit den
PN-Stufen PN 2,5 bis PN 100 und den Nennweiten DN 10 bis DN 4 000.
Diese Norm legt die Flanschtypen und ihre Dichtflächenformen, Maße, Toleranzen, Gewinde, Schraubengrößen,
Oberflächenbeschaffenheit der Dichtflächen der Flanschverbindung, Kennzeichnung, Werkstoffe, Druck/Temperatur-
Zuordnungen und ungefähre Flanschgewichte fest.
Diese Norm gilt nicht für Flansche, die aus Stangenmaterial gedreht werden und nicht für Flansche der Typen 11,
12 und 13 aus Blech.
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 systeme de brides spécifie les prescriptions pour les brides circulaires en acier avec les désignations PN 2,5 a PN 100 et les diametres nominaux DN 10 a DN 4000.
La présente norme 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.
La présente norme ne s'applique pas aux brides fabriquées par tournage a partir de barres, ni aux brides de types 11, 12 et 13 fabriquées a partir de tôles.
Prirobnice in prirobnični spoji – Okrogle prirobnice za cevi, ventile, fitinge in dodatke z oznako PN - 1. del: Jeklene prirobnice
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flangesBrides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires désignées PN - Partie 1: Brides en acierFlansche und ihre Verbindungen - Runde Flansche für Rohre, Armaturen, Formstücke und Zubehörteile, nach PN bezeichnet - Teil 1: StahlflanscheTa slovenski standard je istoveten z:EN 1092-1:2001SIST EN 1092-1:2002en23.040.60Prirobnice, oglavki in spojni elementiFlanges, couplings and jointsICS:SLOVENSKI
STANDARDSIST EN 1092-1:200201-november-2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1092-1December 2001ICS 23.040.60English versionFlanges and their joints - Circular flanges for pipes, valves,fittings and accessories, PN designated - Part 1: Steel flangesBrides et leurs assemblages - Brides circulaires pourtubes, appareils de robinetterie, raccords et accessoiresdésignées PN - Partie 1: Brides en acierFlansche und ihre Verbindungen - Runde Flansche fürRohre, Armaturen, Formstücke und Zubehörteile, nach PNbezeichnet - Teil 1: StahlflanscheThis European Standard was approved by CEN on 6 July 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1092-1:2001 E
EN 1092-1:2001 (E)2ContentsPageForeword3Introduction41Scope42Normative references53Terms and definitions73.1DN73.2PN73.3maximum allowable pressure, PS73.4maximum allowable temperature, TS74Designation75General requirements85.1Flange materials85.2Repairs95.3Bolting95.4Gaskets95.6Dimensions105.8Spot facing or back facing of flanges125.9Tolerances125.10Marking12Annex A (normative) Butt weld-end preparation53Annex B (informative) Material groups54Annex C (informative) Approximate masses of flanges and collars56Annex D (informative) Additional materials64Annex E (informative) Determination of p/T ratings for flanges using EN materials65Annex F (informative) Determination of p/T ratings for flanges using66ASTM materialsAnnex ZA (informative) Clauses of this European Standard addressing essentialrequirements or other provisions of EU Directives68Bibliography 70
EN 1092-1:2001 (E)3ForewordThis document (EN 1090-1;2001) 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 ofan identical text or by endorsement, at the latest by June 2002, and conflicting national standardsshall be withdrawn at the latest by June 2002.This document has been prepared under a mandate given to CEN by the European Commissionand the European Free Trade Association, and supports essential requirements of EUDirective(s).For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of thisdocument.According to the CEN/CENELEC Internal Regulations, the national standards organizations ofthe following countries are bound to implement this European Standard : Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.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.This standard includes one normative and eight informative annexes.
EN 1092-1:2001 (E)4IntroductionWhen Technical Committee, CEN/TC 74, commenced its work of producing this EuropeanStandard 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 theISO standard in respect of the following:a) Whereas ISO 7005-1 included in its scope both the original DIN based flanges andalso the original ANSI/ASME based flanges, EN 1092-1 contains only the DIN basedflanges. CEN/TC 74 has produced a separate series of standards, prEN 1759-1:2000,prEN 1759-3:1994 and prEN 1759-4:1997, dealing with the ANSI/ASME based flanges intheir original Class designations;b) The opportunity was taken to revise some of the technical requirements applicable tothe DIN origin flanges.Consequently, whilst the mating dimensions, the flange and facing types and designations arecompatible with those given in ISO 7005-1, it is important to take account of the followingdifferences which exist in EN 1092-1:1) The p/T ratings of this standard have been reduced in many cases by either limiting thelower temperature ratings which can no longer exceed the PN value, or by increasing therate 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 ISOstandard, EN 1092-1 also includes PN 63 and PN 100 flanges;3) This standard specifies grades of European steels similar to those specified in ISO7005-1, but in addition permits the use of those grades of ASTM steels which arespecified in the ISO standard for use with the ANSI/ASME based flanges;4) This standard gives an informative annex concerning requirements of EU Directives.1
ScopeThis European Standard for a single series of flanges specifies requirements for circular steelflanges in PN designations PN 2,5 to PN 100 and nominal sizes from DN 10 to DN 4000.This standard specifies the flange types and their facings, dimensions, tolerances, threading, boltsizes, flange jointing face surface finish, marking, materials, pressure/ temperature ratings andapproximate flange masses.This standard does not apply to flanges made from bar stock by turning, or to flanges of types 11,12 and 13 made from plate material.
EN 1092-1:2001 (E)52 Normative referencesThis European Standard incorporates by dated or undated reference provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisionsof any of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references the latest edition of the publication referred toapplies (including amendments).EN 764, Pressure equipment - Terminology and symbols - Pressure, temperature, volumeEN 1333, Pipework components - Definition and selection of PNEN 1708-1, Welding - Basic weld joint details in steel - Part 1: Pressurized componentsEN 10025, Hot rolled products of non-alloy structural steels - Technical delivery conditionsprEN 10028-2:2000, Flat products made of steels for pressure purposes - Part 2: Non alloy andalloy steels with specified elevated temperature propertiesprEN 10028-3:2000, Flat products made of steels for pressure purposes - Part 3: Weldable finegrade steels, normalisedprEN 10028-4:2000, Flat products made of steels for pressure purposes - Part 4: Nickel alloysteels with specified low temperature propertiesEN 10028-7, Flat products made of steels for pressure purposes - Part 7: Stainless steelsEN 10213-2, Technical delivery conditions for steel castings for pressure purposes - Part 2: Steelgrades for use at room temperature and elevated temperaturesEN 10213-3, Technical delivery conditions for steel castings for pressure purposes - Part 3: Steelgrades for use at low temperaturesEN 10213-4, Technical delivery conditions for steel castings for pressure purposes - Part 4:Austenitic and austenitic-ferritic steel gradesEN 10222-2, Steel forgings for pressure purposes - Part 2: Ferritic and martensitic steels withspecified elevated temperature propertiesEN 10222-3, Steel forgings for pressure purposes - Part 3: Nickel steel with specified lowtemperature propertiesEN 10222-4, Steel forgings for pressure purposes - Part 4: Weldable fine grain steels with highproof strengthEN 10222-5, Steel forgings for pressure purposes - Part 5: Austenitic, martensitic and austenitic-ferritic stainless steelsprEN ISO 9692-1:2000, Welding and allied processes - Recommendation for joint preparation -Part 1: Manual metal-arc welding, gas-shielded metal-arc welding and gas welding of steels(ISO/DIS 9692-1:2000)EN ISO 9692-2, Welding and allied processes - Joint preparation - Part 2: Submerged arcwelding of steels (ISO 9692-2:1998)
EN 1092-1:2001 (E)6EN ISO 6708, Pipe components - Definition of DN (nominal size) (ISO 6708:1995)ISO 7-1, Pipe threads where pressure-tight joints are made on the threads –Part 1: Dimensions, tolerances and designationISO 7-2, Pipe threads where pressure tight joints are made on the threads –Part 2: Verification by means of limit gaugesISO 887, Plain washers for metric bolts, screws and nuts - General planASTM A105/A105M, Forgings, Carbon Steel, for Piping ComponentsASTM A182/A 182M, Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves andParts for High-Temperature ServiceASTM A203/A203M, Pressure Vessel Plates, Alloy Steel, NickelASTM A204/A204M, Specification for pressure vessel plates, alloy steel, molybdenumASTM A216/A216M, Steel Castings, Carbon Suitable for Fusion Welding for High-TemperatureServiceASTM A217/A217M, Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing PartsSuitable for High-Temperature ServiceASTM A240/A240M, Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet,and Strip for Pressure VesselsASTM A325, High-Strength Bolts for Structural Steel JointsASTM A350/A350M, Forgings, Carbon and Low-Alloy Steel, Requiring Notch Toughness Testingfor Piping ComponentsASTM A351/A351M, Castings, Austenitic, Austenitic-Ferritic (Duplex) for Pressure-Containing PartsASTM A352/A352M, Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts Suitablefor Low-Temperature ServiceASTM A387/A387M, Pressure Vessel Plates, Alloy Steel, Chromium-MolybdenumASTM A515/A515M, Pressure Vessel Plates, Carbon Steel, for Intermediate and Higher-Temperature ServiceASTM A516/A516M, Pressure Vessel Plates, Carbon Steel, for Moderate and Lower-TemperatureServiceASTM A537/A537M, Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel
EN 1092-1:2001 (E)73
Terms and definitionsFor the purposes of this standard the following terms and definitions apply:3.1 DNsee EN ISO 67083.2 PNsee EN 13333.3 maximum allowable pressure, PSmeans the maximum pressure for which the equipment is designed, as specified by theequipment manufacturer3.4 maximum allowable temperature, TSmeans the maximum temperature for which the equipment is designed, as specified by theequipment manufacturer4
Designation4.1GeneralTable 1 specifies the flange types and ancillary components.Figures 1 and 2 show flange types and ancillary components with the relevant flange typenumbers. Flanges shall be denoted with "flange type" and the "flange number". Ancillarycomponents shall be denoted with ancillary component type and the type number.Figure 3 shows flange facing types, which may be used with the flanges or components shown infigures 1 and 2. Flange facings shall be denoted with "type" and the relevant symbol.The range of DN, applicable to each flange type and to each PN, shall be as given in table 3.4.2Standard designationFlanges and ancillary components in accordance with this standard shall be designated with thefollowing:a) Designation, e.g. flange, lapped end or collar;b) Number of this standard, EN 1092-1;c) Number of flange type in accordance with figures 1 and 2;d) Type of flange facing in accordance with figure 3;e) DN (nominal size);f) PN designation;g) Neck thickness S (only for types 11 and 34);h) For type 13 flanges type of thread (Rp or Rc);i) Bore diameter (for sizes greater than DN 600);
EN 1092-1:2001 (E)8 B 1 (only for types 01, 12 and 32); B 2 (only for type 02); B 3 (only for type 04);j) Either the symbol or the number or the grade of the material (see tables 5a and 5b);k) any heat treatment required;l) material certificate, if required (see 5.1).EXAMPLE 1Designation of a flange type 01 with facing type A and nominal size DN 800, of PN 6 with borediameter B 1 = 818 mm, made of material with the symbol S235JR.Flange EN 1092-1/01 A/DN 800/PN 6/818/S235JREXAMPLE 2Designation of an ancillary component type 32 with facing type A of nominal size DN 400, PN 10and made of material with the symbol S235JR.Collar EN 1092-1/32 A/DN 400/PN 10/S235JREXAMPLE 3Designation of a flange type 02 with facing type A of nominal size DN 400, PN 10 and made ofmaterial with the number 1.0038.Flange EN 1092-1/02 A/DN 400/PN 10/1.0038EXAMPLE 4Designation of a flange type 11 with facing type B2 of nominal size DN 200, PN 100 and withneck thickness, S = 10 mm, made of material with the symbol 13CrMo4-5.Flange EN 1092-1/11 B2/DN 200/PN 100/10/13CrMo4-55
General requirements5.1
Flange materialsFlanges shall be manufactured from materials given in tables 5a and 5b (see also annex D). Fortype 11, 12 and 13 flanges, the manufacture shall be from forgings. For type 21 flanges themanufacture shall be from forgings or steel castings.The flange manufacturer shall provide documentation to ensure traceability of material. Anequipment manufacturer may require a certificate in accordance with EN 10204 which is suitablefor the category of equipment to which the flange is fitted.NOTE 1
The materials given in tables 5a and 5b (see also annex D) are tabulated in groups having the same p/Tratings as given in tables 15, 16, 17,18,19 and 20 (seeannex B).NOTE 2
The materials of ancillary components are not within the scope of this standard.
EN 1092-1:2001 (E)95.2
RepairsWhere not otherwise prohibited by the applicable material standard, repairs by welding arepermitted when there is a proven method. All welding shall be carried out in accordance with awritten procedure.NOTE
For approval of welding procedures, see EN 288-1. For approval of welders, see EN 287-1.5.3
BoltingFlanges shall be suitable for use with the number and size of bolting as specified in tables 6 to13. 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 theexpected operating conditions. For selection of bolting, see EN 1515-1, for combination of thematerials of flanges and bolting see prEN 1515-2:1994, for information.5.4
GasketsThe various gasket types, dimensions, design characteristics and materials used are not withinthe scope of this standard. Dimensions of gaskets are given in EN 1514-1 to EN 1514-4.5.5Pressure/temperature (p/T) ratingsThe p/T ratings of flanges are given in tables 15, 16, 17,18, 19 and 20.The p/T ratings indicate the relationship between the maximum allowable pressure PS and themaximum allowable temperature.The p/T ratings shall apply only for flange types 05, 11, 12, 13 and 21 having nominal sizes up toand including DN 600. The p/T ratings of all other flanges shall be calculated or subject to specialexperience.NOTE 1
The rules for the determination of p/T ratings of the above tables are given in annexes E and F.NOTE 2
For the material groups 10E0 to 16E0 (austenitic steels) tables 17 and 18 should be used as follows:– table 17 should be chosen for application in cases where the flange deformation has to be strictly limited;– table 18 should be chosen in all cases where a small amount of plastic deformation of the flanges can beconsidered acceptable.NOTE 3
Linear interpolation is permitted for intermediate temperatures.For interpolation between (-10 °C to 50 °C) and 100 °C, 20 °C shall be used.NOTE 4
The relevant pressures and temperatures are those of the fluid in the pipework system.
EN 1092-1:2001 (E)105.6Dimensions5.6.1FlangesThe dimensions of flanges shall be as given in tables 6 to 13 according to the PN designation.Dimension Gmax may be varied from the given value (see NOTE 1) which is a maximum limit. Theneck thickness, S is a minimum value, selected according to pipe thicknesses given in ISO 4200(see NOTE 2).NOTE 1
The centre portion of the face of a flange type 05 need not be machined provided that the diameter of theunmachined portion does not exceed the recommended diameter for Gmax ,given in tables 6 to 13.NOTE 2
When requested by the pressure equipment manufacturer, neck thicknesses, other than those given in therelevant tables, may be supplied by agreement with the flange manufacturer.NOTE 3
A summary of the various types of flanges specified is given in table 3 showing the nominal sizes applicableto each type and to each PN.NOTE 4
Diameters N1, N2 and N3 of flange types 11, 12, 13, 21 and 34 are the theoretical maximum values permittingthe use of ring spanners or the application of normal series plain washers without any additional machining, e.g. spotfacing (see 5.8).NOTE 5
The bore diameters of flanges type 21 are not specified in this standard, the effective bore diameters areusually given in the relevant component standard(s).NOTE 6
Approximate masses of flanges are given in annex C.NOTE 7
The flange thicknesses for flanges type 05, 11, 12, 13, 21 and PN 6, PN 10, PN 16, PN 25 have an unusualstep at DN 600/DN 700. This is based on a change at some flange thicknesses up to and including DN 600 to meet thepressure/temperature ratings (limited to DN 600). The flange thicknesses for flanges DN 700 and above are the sameas they are given in the documents of origin (DIN, BS NFE, IBN etc.). They will be updated in future based on theflange calculation method as far as the corresponding work items of CEN/TC 74/WG 10 gives sufficient results.NOTE 8
For flanges type 21 dimensions A, N3 and R1 are nominal values and are included for guidance only.5.6.2HubsThe hubs of flange types 12 and 13 shall be either:a) parallel; orb) taper with an angle not exceeding 7° on the outside surface for forging or castingpurposes.Details of the weld end preparation for flanges type 11 and ancillary components type 33 shall beas given in annex A.5.6.3Threaded flanges5.6.3.1 The threads of flanges type 13 shall be parallel (symbol Rp) or tapered (symbol Rc) inaccordance with ISO 7-1. Gauging shall be in accordance with ISO 7-2.NOTE
Parallel threads will be supplied unless otherwise requested by
the equipment manufacturer.
EN 1092-1:2001 (E)115.6.3.2 The thread shall be concentric with the axis of the flange and misalignments shall notexceed 5 mm per metre.Flanges type 13 shall be manufactured without a parallel counterbore, but to protect the threadthey shall be chamfered to the major diameter of the thread at the hubbed side of the flange at anangle between 30° and 50° to the axis of the thread. The chamfer shall be concentric with thethread and shall be included in the measurement of the thread length provided that the chamferdoes not exceed one pitch in length.5.6.4 Bolt holesBolt holes shall be equally spaced on the pitch circle diameter. In the case of flanges type 21they shall be positioned such that they are symmetrical to the principal axes and such that noholes fall on these axes i.e. positioned “off-centre”, see figures 5 to 12.5.6.5Lapped jointsThe dimensions of lapped joints to be used with flanges, type 02 and type 04, are specified intables 7 to 11.For ancillary component type 33, the thickness of the lapped end at the facing shall be not lessthan the specified wall thickness of the pipe used.5.7Flange facings5.7.1Types of facingsThe types of flange facings shall be as given in figure 3 and their dimensions shall be as given infigure 4 and table 4.For facings types B, D, F and G, the transition from the edge of the raised face to the flange shallbe:a) radius; orb) chamferat the choice of the flange manufacturer.5.7.2Jointing face finish5.7.2.1 All flange jointing faces shall be machine finished and shall have a surface finish inaccordance with the values given in table 2 when compared with reference specimens by visualor tactile means.NOTE
It is not intended that instrument measurements be taken on the faces themselves; the Ra and Rz values asdefined in EN ISO 4287 relate to the reference specimens.5.7.2.2 For flanges with facing types A, B1, E and F, turning shall be carried out with a roundnosed tool in accordance with table 2.5.7.2.3 Flanges
PN 40 shall have type B1 facings and flanges
PN 63 shall have type B2facings, unless otherwise agreed in the order.
EN 1092-1:2001 (E)125.8Spot facing or back facing of flangesAny spot facing or back facing shall not reduce the flange thickness to less than the flangethickness specified. When spot facing is used, the diameter shall be large enough toaccommodate the outside diameter of the equivalent normal series of washers in accordancewith ISO 887 for the bolt size being fitted. The bearing surfaces for the bolting shall be parallel tothe flange face within the limits given in table 14. When a flange is back faced a minimum filletradius, R2 (see figure 13) in accordance with table 21 shall be maintained.5.9TolerancesTolerances on dimensions of flanges shall be as given in table 14.5.10Marking5.10.1General marking requirementsAll flanges, other than type 21 flanges, shall be marked as follows:a) Flange manufacturer’s name or trade mark, e.g. XXX;b) Number of this standard, i.e. EN 1092-1;c) Flange type number, e.g. 11;d) DN, e.g. DN 150;e) PN designation, e.g. PN 40;f) Neck thickness (S), if not to this standard;g) For EN materials – either the symbol or the number or the grade of the material, e.g.S235JR;For ASTM materials - the material grade, preceded by the specification number wherenecessary, e.g. WC 4;h) Cast number of melt identification or suitable control number traceable to the castnumber, e.g. 12345, when test certification is required.EXAMPLE
XXX/EN 1092-1/11/DN 150/PN 40/S235JR/12345If a flange is too small to enable all the markings required then the minimum marking requiredshall be:a) Flange manufacturer’s name or trade mark;b) letters “EN”;e) PN designation e.g. PN 40;g) either the symbol or the number or the grade of the material;h) cast number or melt identification or suitable control number.
EN 1092-1:2001 (E)135.10.2StampingWhere steel stamps are used, the marking shall be positioned on the outer rim of the flange.NOTE
It should be ensured that steel stamp markings are not liable to cause cracks in the flange material.5.10.3Declaration of complianceThe marking EN 1092-1, together with the flange manufacturer's name or trademark on or inrelation to a product, represents the flange manufacturer's declaration of compliance to thisstandard, i.e. a claim by or on behalf of the flange manufacturer that the product meets therequirements of this standard.
EN 1092-1:2001 (E)14NOTE
These sketches are diagrammatic only, in particular no detail is shown for the mating surfaces (see figure 3).Figure 1 - Flange typesType 01Plate flange for weldingType 02Loose plate flange with weld-on collar (seetype 32) or lapped pipe end (see type 33)Type 04Loose plate flange with weld-neck collar(see type 34)Type 05Blank flangeType 11Weld-neck flangeType 12Hubbed slip-on flange for weldingType 13Hubbed threaded flangeType 21Integral flange
EN 1092-1:2001 (E)15Table 1 - Types of steel flanges and ancillary componentsType NoDescription01Plate flange for welding02Loose plate flange with weld-on plate collar or for lapped pipe end04Loose plate flange with weld-neck collar05Blank flange11Weld-neck flange12Hubbed slip-on flange for welding13Hubbed threaded flange21aIntegral flange32bWeld-on plate collar33bLapped pipe end34bWeld-neck collara Flange type 21 is an integral part of some other equipment or component.b Ancillary components type numbers 32 and 33 are for use with type 02 flangesand type number 34 for use with type 04 flanges.NOTE
Type numbers have been made non-consecutive to permit possible future additions.Type 32Type 33Type 34Weld-on collar plateLapped pipe endWeld-neck collarNOTE
These sketches are diagrammatic only.Figure 2 - Ancillary components Types 32 to 34
EN 1092-1:2001 (E)16Type AFlat faceType BRaised face (B1 andB2)Type CTongueType DGrooveType ESpigotType FRecessType GO-ring spigotType HO-ring grooveNOTE 1
The transition from the edge of the raised face to the flange face may be by radius or chamfer for types B, D,F and G only (see 5.7.1).NOTE 2
B1 and B2 are raised face (type B) for different applications (see 5.7.2.2, 5.7.2.3 and table 2).NOTE 3
For the dimensions of flange facings, see figure 4 and table 4.Figure 3 - Flange facing types
EN 1092-1:2001 (E)17Table 2 - Surface finish for jointing facesFacing typesMethod ofmachiningRadius of tool noseRaaRzammµmµmmin.min.max.min.max.A, B1 b, E, FTurning c1,03,212,512,550B2 b, C, D, G,HTurning c-0,83,23,212,5a Ra and Rz are defined in EN ISO 4287.b Types B1 and B2 are raised face (type B) flanges with different specified surfaceroughness values for the following applications:B1 for PN 2,5 up to PN 40;B2 for PN 63 and PN 100.c The term 'turning' includes any method of machine operation producing either serratedconcentric or serrated spiral grooves.NOTE
For certain applications, e.g. low temperature gases, it may be necessary to stipulate closer control to thesurface finish.
EN 1092-1:2001 (E)18Table 3 – Synoptic table
EN 1092-1:2001 (E)19Table 3 (continued)
EN 1092-1:2001 (E)20Table 3 (concluded)
EN 1092-1:2001 (E)21ccf1Ø d1Type A: Flat faceType B: Raised face (B1 and B2)Ø wf2cf2Ø xf3Ø zØ yf1cØ d1Type C: TongueType D: GrooveØ xØ d1Ø yf3f2cf1cType E: SpigotType F: RecessØ wf2Ø d1Ø zØ yf3cf1cf4RType G: O-ring spigotType H: O-ring grooveNOTE 1
Dimension C includes the raised face thickness.NOTE 2
Cross section diameter of the O-ring is 2
R.Figure 4 - Flange facing (dimensions see table 4)
EN 1092-1:2001 (E)22Table 4 - Flange facing dimensionsd1PN 2,5PN 6PN 10PN 16PN 25PN 40PN 63PN 100f1f2f3f4wxyz RDNmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm10354024343523-15404529394028-20505836505135256068435758423270Use PN 100 dimensions784,54,02,0516566502,54080886175766041°509010273878872651101229510911094801281381061201211051001481581581621621621621291491501281251781881881881881881881551751761541502022122122182182182185,04,52,518320320418232°3200258268268278285285285239259260238250312320320335345345345292312313291300365370378395410410410234336336434235041543043845046546546539542142239440046548249050553553553544747347444645052053255055556056056049752352449627°3,5500570585610615615615615549575576548600670685725720735735-5,55,03,0649675676648700775800795820-840-751777778750800880905900930-960-856882883855900980100510001030-1070-9619879889601000Use PN 6dimensions1080111011151140-1180-1062109210941060120012801295133013301350-1380-1262129212941260140014801510153515301560---6,56,04,0146214921494146028°4160016901710176017501780---1662169216941660180018901920196019501985---1862189218941860200020902125217021502210---20622092209420602200229523352370--------------2400249525452570--------------2600269527502780--------------2800291029603000--------------3000311031603210--------------320033103370---------------340035103580---------------360037203790---------------38003920----------------40004120---------------
EN 1092-1:2001 (E)23Table 5a - Materials-ENForgingsCastingsHot rolled productsGroupSymbolStandardMaterialnumberSymbolStandardMaterialnumberSymbolStandardMaterialnumber1E0S235JREN 100251.0037---S235JREN 100251.00371E1S235JRG2EN 100251.0038---S235JRG2EN 100251.00382E0---GP240GREN 10213-21.0621----3E0P245GHEN 10222-21.0352GP240GHEN 10213-21.0619P265GHEN 10028-21.04253E1P280GHEN 10222-21.0426---P295GHEN 10028-21.04814E017Mo3EN 10222-21.5445G20Mo5EN 10213-21.541916Mo3EN 10028-21.54155E014CrMo4-5EN 10222-21.7335G17CrMo5-5EN 10213-21.735713CrMo4-5EN 10028-21.73356E011CrMo9-10EN 10222-21.7383G17CrMo9-10EN 10213-21.737911CrMo9-10EN 10028-21.73836E1X16CrMo5-1+NTEN 10222-21.7366GX15CrMo5EN 10213-21.7365---7E013MnNi6-3EN 10222-31.6217G17Mn5EN 10213-31.1131P275NL1EN 10028-31.0488---G20Mn5EN 10213-31.6220P275NL2EN 10028-31.1104------11MnNi5-3EN 10028-41.62127E1------P355NL1EN 10028-31.0566------P355NL2EN 10028-31.110615NiMn6EN 10222-31.6228---15NiMn6EN 10028-41.622812Ni14EN 10222-31.5637G9Ni14EN 10213-31.563812Ni14EN 10028-41.563712Ni19EN 10222-31.5680---12Ni19EN 10028-41.56807E2X8Ni9EN 10222-31.5662---X8Ni9EN 10028-41.56627E313MnNi6-3EN 10222-31.6217---11MnNi5-3EN 10028-41.621212Ni14EN 10222-31.5637---12Ni14EN 10028-41.5637-EN 10222-31.5680---12Ni19EN 10028-41.5680X8Ni9EN 10222-31.5662---X8Ni9EN 10028-41.56628E0------P275NEN 10028-31.04868E1------P355NEN 10028-31.05628E2P285NHEN 10224-41.0487---P275NHEN 10028-31.04878E3P355NHEN 10222-41.0565---P355NHEN 10028-31.05659E0X20CrMoV11-1EN 10222-21.4922GX23CrMoV12-1EN 10213-21.4931---10E0X2CrNi18-9EN 10222-51.4307GX2CrNi19-11EN 10213-41.4309X2CrNi18-9EN 10028-71.430610E1X2CrNiN18-10EN 10222-51.4311---X2CrNiN18-10EN 10028-71.431111E
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