《BS EN 12560-2-2001 法兰及其接头.标示等级的法兰的衬垫.钢法兰用螺旋缠绕衬垫Flanges and their joints - Gaskets for Class-designated flanges - Spiral wound gaskets for use with steel flanges.pdf》由会员分享，可在线阅读，更多相关《BS EN 12560-2-2001 法兰及其接头.标示等级的法兰的衬垫.钢法兰用螺旋缠绕衬垫Flanges and their joints - Gaskets for Class-designated flanges - Spiral wound gaskets for use with steel flanges.pdf（20页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 12560-2:2001 Flanges and their joints Gaskets for Class-designated flanges Part 2: Spiral wound gaskets for use with steel flanges The European Standard EN 12560-2:2001 has the status of a British Standard ICS 23.040.80 BS EN 12560-2:2001 This British Standard, having been pre
2、pared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 March 2001 BSI 03-2001 ISBN 0 580 37043 7 National foreword This British Standard is the official English language version of EN 12560-2:2001. The U
3、K participation in its preparation was entrusted to Technical Committee PSE/2, Jointing material and compounds, 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 i
4、nternational or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to
5、include all the necessary provisions of a contract. Users of British Standards are responsible for their 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 European commit
6、tee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; 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 17
7、 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12560-2 January 2001 ICS 23.040.80 English version Flanges and their joints
8、 Gaskets for Class-designated flanges Part 2: Spiral wound gaskets for use with steel flanges Brides et leurs assemblages Joints pour les brides dsignes Class Partie 2: Joints spirals pour utilisation avec des brides en acier Flansche und ihre Verbindungen Dichtungen fr Flansche mit Class-Bezeichnun
9、g Teil 2: Spiraldichtungen fr Stahlflansche This European Standard was approved by CEN on 28 December 2000. 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 alterat
10、ion. 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 translatio
11、n 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, Iceland, Ireland, Italy,
12、Luxembourg, Netherlands, Norway, Portugal, 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 2001 CENAll rights of exploitation in any form and by
13、any means reserved worldwide for CEN national Members. Ref. No. EN 12560-2:2001 E Page 2 EN 12560-2:2001 BSI 03-2001 Contents Page Foreword3 Introduction.4 1Scope5 2Normative references.5 3Terms and definitions 5 3.1DN5 3.2NPS5 3.3Class5 4Designations.6 4.1Range of Class designations.6 4.2Range of g
14、asket sizes6 4.3Gasket types.6 4.4Information to be supplied by the purchaser6 5Gasket designs and materials.7 5.1Gasket designs.7 5.2Materials7 6Construction 8 7Gasket compression .8 8Gasket types.8 9Dimensions.8 10Marking.12 10.1General .12 10.2Colour coding 12 Annex A (informative) A-deviations.1
15、4 Annex B (informative) Minimum pipe wall thickness.16 Page 3 EN 12560-2:2001 BSI 03-2001 Foreword This European Standard 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 natio
16、nal standard, either by publication of an identical text or by endorsement, at the latest by July 2001, and conflicting national standards shall be withdrawn at the latest by July 2001. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries
17、 are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. The annex A is informative and contains “A-deviations”.
18、The annex B is informative. Page 4 EN 12560-2:2001 BSI 03-2001 Introduction EN 12560 consists of seven parts: Part 1: Non-metallic flat gaskets with or without inserts. Part 2: Spiral wound gaskets for use with steel flanges. Part 3: Non-metallic PTFE envelope gaskets. Part 4: Corrugated, flat or gr
19、ooved metallic and filled metallic gaskets for use with steel flanges. Part 5: Metallic ring-joint gaskets for use with steel flanges. Part 6: Kammprofile gaskets for use with steel flanges. Part 7: Covered metal jacketed gaskets for use with steel flanges. The terminology and definitions in this st
20、andard are in accordance with those given in ISO standards. WARNING: Gaskets made to this standard may contain asbestos. Materials containing asbestos may be subject to legislation that requires precautions to be taken when handling them to ensure that they do not constitute a hazard to health (see
21、annex A). Attention is drawn to relevant EC directives. Page 5 EN 12560-2:2001 BSI 03-2001 1 Scope This European Standard specifies the dimensions, design, types, designation, materials and marking of spiral wound gaskets for use with type A flat face or type B raised face flange facings complying w
22、ith prEN 1759-1:2000 for Class designations Class 150 to Class 1 500 for nominal sizes DN 15 to DN 600 and for Class designation 2 500 up to and including DN 300. The centering rings for the spiral wound gaskets according to this standard are sized for use with imperial bolting. The dimensions of sp
23、iral wound gaskets for tongue and groove flange facing types and spigot and recess flange facing types to prEN 1759-1:2000 are not included in this standard. NOTE 1: Such gaskets may be available, however, for these types of flanges and the purchaser is advised to consult the manufacturer as to thei
24、r availability. Similarly, for slip-on or screwed flange types the manufacturer should be consulted about availability. NOTE 2: Dimensions of other types of gaskets for use with flanges complying with prEN 1759-1:2000 are given in prEN 12560-1:2000, prEN 12560-3:2000, prEN 12560-4:2000, prEN 12560-5
25、:2000, prEN 12560-6:2000 and prEN 12560-7:2000. 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 date
26、d 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). prEN 1759-1:2000 Flanges an
27、d their joints Circular flanges for pipes, valves, fittings and accessories, Class designated Part 1: Steel flanges, NPS to NPS 24. prEN 1759-3:1994 Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, Class designated Part 3: Copper alloy flanges. EN ISO 6708 Pipew
28、ork components Definition and selection DN (nominal sizes) (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 6708 3.2 NPS see prEN 1759-3:1994 3.3 Class see prEN 1759-3:1994 Page 6 EN 12560-2:2001 BSI 03-
29、2001 4 Designations 4.1Range of Class designations Gaskets shall be designated as suitable for use with one or more of the following Class designations of flange: Class 150; Class 300; Class 600; Class 900; Class 1 500; Class 2 500. 4.2Range of gasket sizes Gasket nominal sizes shall be designated i
30、n accordance with the ranges specified in Table 1. 4.3Gasket types Gasket types, as defined in clause 8 and illustrated in Figure 1, shall be designated as: Type C/I; Type C/O. 4.4Information to be supplied by the purchaser The following information shall be supplied by the purchaser when ordering g
31、askets: a) the number and part of this European Standard, i.e. EN 12560-2; b) gasket type designation (see 4.3); c) the nominal size (see Table 1); d) Class designation (see Table 1); e) whether an inner ring is required in the case of Class 150, Class 300 and Class 600 gaskets (see NOTE 1 of clause
32、 8). Additional information that should be supplied by the purchaser: f) Required gasket materials or, where the gasket manufacturer is required to select the materials, the expected operating conditions for the application(s) for which the gasket(s) will be used. NOTE: Before ordering a gasket it i
33、s recommended that the selection of the gasket type should be made in consultation with the gasket supplier. The selection of gasket type should take account of the fluid, the operating conditions, the properties of the gasket materials, the type and surface finish of the flange facing and the flang
34、e bolt loading. EXAMPLE: A gasket according to EN 12560-2, type C/I, of nominal size DN 100, Class 150, with inner ring, winding material X4CrNi18-10 (abbreviation 304) and PTFE filler material shall be designated as follows: Gasket EN 12560-2 C/I DN 100 Class 150 inner ring 304 PTFE. Page 7 EN 1256
35、0-2:2001 BSI 03-2001 5 Gasket designs and materials 5.1Gasket designs Gaskets for which dimensions are specified shall be one of the designs shown in Figure 1. The centering ring and, where used, the inner ring, shall be suitably grooved to retain the sealing element. a) Type C/I b) Type C/O Figure
36、1 Designs of spiral wound gaskets NOTE 1: Type A and type B flange facings are shown in prEN 1759-1:2000. NOTE 2: The profile of the metal winding of the sealing element is at the option of the manufacturer. 5.2Materials A typical list of metal windings and filler materials is given in Table 3. NOTE
37、 1: The inner ring should be selected from a material equal or superior in corrosion resistance to the metal selected for the windings. NOTE 2: The centering ring should be a carbon steel that is coated or otherwise treated to inhibit atmospheric corrosion. NOTE 3: The materials of the gasket, may,
38、if required, be chosen by the manufacturer to suit the operating conditions. In such instances, the purchaser should define the operating conditions in the enquiry and/or order (see 4.4). WARNING : Gaskets made to this standard may contain asbestos. Materials containing asbestos may be subject to le
39、gislation that requires precautions to be taken when handling them to ensure that they do not constitute a hazard to health (see annex A). Attention is drawn to relevant EC directives. Page 8 EN 12560-2:2001 BSI 03-2001 6 Construction Spiral wound gaskets shall be constructed as alternative plies of
40、 preformed metal windings and pliant fillers which are spirally wound. For the finished gasket the filler shall be essentially flush with, but not below, the metal winding on both contact faces of the gasket. The thickness of the metal winding strip in the sealing element shall be between 0,15 mm an
41、d 0,23 mm. The filler material thickness is left to the discretion of the manufacturer. The profile of the metal winding of the sealing element is at the option of the manufacturer. The inner windings shall have a minimum of three plies of preformed metal strip without filler. The inner two plies sh
42、all be spotwelded about their circumference with a minimum of three welds, each no further than 75 mm apart. The outer windings shall have a minimum of three plies of preformed metal without filler. The outer two plies shall be spotwelded about their circumference with a minimum of three terminal we
43、lds, with no more than 40 mm distance between the first and terminal welds. Up to four additional loose preformed metal windings beyond the terminal weld may be used to retain the gasket into the centering ring. 7 Gasket compression Gaskets for DN 15, DN 20 and DN 25 in Class 150, Class 300 and Clas
44、s 600 shall be constructed so that an applied uniform bolt stress of 172 MPa, based on the nominal bolt root diameter, will compress the gasket to a thickness of 3,2 mm to 3,4 mm. All other gasket sizes and Classes shall be constructed so that a uniform bolt stress of 207 MPa will compress the gaske
45、t to a thickness of 3,2 mm to 3,4 mm. 8 Gasket types Gaskets shall be one of the following types: a) sealing element with centering ring and inner ring (designation: type C/I); b) sealing element with centering ring only (designation: type C/O). All gaskets shall have a centering ring. All Class 900
46、, Class 1 500 and Class 2 500 gaskets shall also have an inner ring. All gaskets containing PTFE filler material shall have an inner ring. NOTE 1: The use of an inner ring is recommended for all Class designations and the purchaser should specify on the enquiry and/or order if an inner ring is requi
47、red for Class 150, Class 300 and Class 600 gaskets (see 4.4). The use of an inner ring is also recommended for graphite spiral wound gaskets for Class 600 and above. NOTE 2: The selection of gasket type should take into account the fluid, the operating conditions, the properties of the gasket materi
48、als, the type and surface finish of the flange facing and the flange bolt loading. It is recommended that selection of gaskets for any particular application is made in consultation with the gasket supplier (see 4.4). 9 Dimensions The diameters of spiral wound gaskets with centering ring, for use wi
49、th types A and B flange facings, shall be as given in Table 1. For gaskets with an inner ring, the sealing element outside diameter and centering ring outside diameter shall be as given in Table 1 and the inner ring inside diameter shall be as given in Table 2. NOTE: Type A and B flange facings are shown in prEN 1759-1:2000. The overall thickness is measured across the metallic portion of the sealing element of the gasket, the part not including the filler, as t