BS EN 1759-4-2003 法兰及其接头 管材、阀门、管件及附件用已命名种类的圆形法兰 第4部分 铝合金法兰.pdf

BRITISH STANDARD BS EN 1759-42003 Flanges and their joint Circular flanges for pipes, valves, fittings and accessories, class designated Part 4 Aluminium alloy flanges The European Standard EN 1759-42003 has the status of a British Standard ICS 23.040.60 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Mon Apr 02 101718 GMT0000 2007, Uncontrolled Copy, c BSI BS EN 1759-42003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 1 October 2003 BSI 1 October 2003 ISBN 0 580 42684 X National foreword This British Standard is the official English language version of EN 1759-42003. The UK participation in its preparation was entrusted to Technical Committee PSE/15, Flanges, which has the responsibility to A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests ined; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Mon Apr 02 101718 GMT0000 2007, Uncontrolled Copy, c BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1759-4 September 2003 ICS 23.040.60 English version Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, class designated - Part 4 Aluminium alloy flanges Brides et leurs assemblages - Brides circulaires pour tubes, appareils de robinetterie, raccords et accessoires, dsignes Class - Partie 4 Brides en alliages daluminium Flansche und ihre Verbindungen - Runde Flansche fr Rohre, Armaturen, stcke und Zubehrteile, nach Class bezeichnet - Teil 4 Flansche aus Aluminiumlegierungen This European Standard was approved by CEN on 10 July 2003. 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 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN 1759-42003 E Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Mon Apr 02 101718 GMT0000 2007, Uncontrolled Copy, c BSI EN 1759-42003 E 2 ContentsPage Foreword......................................................................................................................................................................3 1Scope ..............................................................................................................................................................4 2Normative references ....................................................................................................................................4 3Terms and definitions....................................................................................................................................4 4Designations...................................................................................................................................................5 4.1Range of nominal sizes.................................................................................................................................5 4.2Range of Class designations........................................................................................................................5 4.3Types of flanges.............................................................................................................................................5 4.4Designation of flanges ..................................................................................................................................5 5General requirements....................................................................................................................................6 5.1Flange materials.............................................................................................................................................6 5.2Repairs............................................................................................................................................................6 5.3Bolting.............................................................................................................................................................6 5.4Gaskets...........................................................................................................................................................6 5.5Pressure/temperature p/T ratings..............................................................................................................6 5.6Dimensions.....................................................................................................................................................6 5.7Flange facings................................................................................................................................................7 5.7.1Types of jointing faces..................................................................................................................................7 5.7.2Jointing face finish ........................................................................................................................................7 5.8Spot facing and back facing of flanges.......................................................................................................7 5.9Tolerances......................................................................................................................................................7 5.10Marking ...........................................................................................................................................................7 Annex A inative Masses of flanges ...............................................................................................................14 Annex B inative Comparison of metric bolting to imperial bolting............................................................15 Annex ZA inative Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC .............................................................................................................................16 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Mon Apr 02 101718 GMT0000 2007, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 1759-42003 E 3 Foreword This document EN 1759-42003 has been prepared by Technical Committee CEN/TC74 “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 March 2004, and conflicting national standards shall be withdrawn at the latest by March 2004. 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 the Pressure Equipment Directive PED1. For relationship with EU Directives, see inative annex ZA, which is an integral part of this standard. EN 1759 consists of the following parts Part 1 Steel flanges draft stage; Part 3 Copper alloy flanges draft stage; Part 4 Aluminium alloy flanges The mating dimensions of the flanges of this standard are compatible with those flanges of other materials in ac- cordance with the other parts of EN 1759 and with those flanges of ISO 7005. Anns A and B are inative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun- tries are bound to implement this European Standard Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. 1 Directive 97/23 EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the Laws of the Member States concerning pressure equipment; OIEC L 181. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Mon Apr 02 101718 GMT0000 2007, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 1759-42003 E 4 1 Scope This European standard specifies requirements for Class designated circular flanges for pipes, valves, fittings and accessories made from aluminium alloy in the range of DN 15 to DN 600 NPS 1/2 to NPS 24 and Class 150 to Class 300 see Table 1. This standard specifies the types of flanges and their facings, dimensions and tolerances, bolt sizes, surface finish of jointing faces, marking and materials together with associated pressure temperature p/T ratings. The flanges are intended to be used for piping as well as for pressure vessels. 2 Normative references This European Standard incorporates, by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies including amendments. EN 1515-1, Flanges and their joints Bolting Part 1 Selection of bolting. EN 12392, Aluminium and aluminium alloys Wrought products Special requirements for products intended for the production of pressure equipment. EN 12560, Flanges and their joints - Gaskets for Class-designated flanges in different parts EN ISO 42871998, Geometrical product specification GPS Surface texture Profile Terms, defini- tions and surface texture parameters ISO 42871997. EN ISO 67081995, Pipework Components Definition and selection of DN nominal size ISO 6708 1995. 3 Terms and definitions For the purposes of this European Standard the following terms and definitions apply 3.1 DN see EN ISO 67081995 3.2 NPS Nominal pipe size An alphanumeric designation of size for components of a pipework system, which is used for reference purposes. It comprises, for the purpose of Class designated flanges according to this standard, the letters NPS followed by a dimensionless number which is indirectly related to the physical size of the bore or outside diameter of the end connections. NOTE 1The number following the letters NPS does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard. NOTE 2The relationship between DN and NPS is given in the tables. 3.3 Class An alphanumeric designation used for reference purposes related to a combination of mechanical and dimensional characteristics of a component of a pipework system. It comprises the word Class followed by a dimensionless whole number. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Mon Apr 02 101718 GMT0000 2007, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 1759-42003 E 5 NOTE 1The number following the word Class does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard. NOTE 2The designation Class is not meaningful unless it is related to the relevant component standard number. NOTE 3It is intended that all components with the same Class and NPS designations shall have the same mating dimen- sions for compatible flange types. 3.4 Ra, Rz see EN ISO 42871998 3.5 Maximum allowable pressure, PS PS means the maximum pressure for which the equipment is designed, as specified by the equipment manufac- turer. 3.6 Maximum allowable temperature, TS TS means the maximum temperature for which the equipment is designed, as specified by the equipment manu- facturer. 4 Designations 4.1 Range of nominal sizes The range of DN NPS applicable to each Class shall be as given in Table 1. 4.2 Range of Class designations The range of Class designations shall be as given in Table 1. 4.3 Types of flanges Figure 1 illustrates flanges identified according to type a Type 05 Blank flange; b Type 11 Weld-neck flange. 4.4 Designation of flanges The designation of the flanges shall contain the following ination a Description Flange; b Number of this standard EN 1759-4; c Flange type 11, 05 resp.; d Flange facing type e.g. C; e DN or NPS e.g. DN 300; f For type 11 flanges only, neck diameter, A and neck thickness, S e.g. 324 x 5; g Class e.g. Class 150; Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Mon Apr 02 101718 GMT0000 2007, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 1759-42003 E 6 h Material