1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationSpecification for flanges and bolting for pipes, valves and fittingsBS 10:2009Incorporating Corrigendum No. 1 BS 10:2009 BRITISH STANDARDPublishing and copyright informationThe B
2、SI copyright notice displayed in this document indicates when the document was last issued. The British Standards Institution 2012 Published by British Standards Limited 2012ISBN 978 0 580 78738 6ICS 23.040.60The following BSI references relate to the work on this standard: Committee reference PSE/1
3、5 Draft for comment 08/30174939 DCPublication historyFirst published as BS 10-1:1947, BS 10-2:1926, BS 10-3:1929, BS 10-4:1931 and BS 10-5:1932First published as BS 10, December 1962Second (present) edition, April 2009Amendments issued since publicationDate Text affected April 2011 See forewordBRITI
4、SH STANDARD The British Standards Institution 2012 iBS 10:2009ContentsForeword iii1 Scope 12 Normative references 13 Design temperature and pressure 24 Designation 25 Flange dimensions 26 Flange materials 37 Attachment of flanges 48 Hydraulic testing of flange joints 49 Certification 410 Low tempera
5、ture flanges and bolting 6AnnexesAnnex A (informative) Information to be supplied by the purchaser 33Annex B (informative) Minimum requirements of steel to be used for flanges in Table A to Table H 34Annex C (normative) Bolts and nuts 37Bibliography 41List of figuresFigure 1 Shaped stud bolt (see C.
6、4) 25Figure 2 Application diagram for bolts and stud-bolts g33text deletedg34 26Figure 3 Steel or copper alloy plain flange 28Figure 4 Steel boss flange 29Figure 5 Integrally forged or cast steel flange for valves only 30Figure 6 Steel welding neck flange (see Table D to Table T) 31Figure 7 Integral
7、ly cast iron flanges (see Table F and Table H) 32List of tablesTable 1 Flange materials minimum requirements 3Table 2 Temperature/pressure ratings for carbon steel flanges see Annex B 5Table A Dimensions of plain, boss, integrally cast or forged flanges (for ratings see Table 2 and Annex B) 7Table D
8、 Dimensions of plain, boss, integrally cast or forged and welding neck flanges (for ratings see Table 2 and Annex B) 9Table E Dimensions of plain, boss, integrally cast or forged, and welding neck flanges (for ratings see Table 2 and Annex B) 12Table F Dimensions of plain, boss, integrally cast or f
9、orged, and welding neck flanges (for ratings see Table 2 and Annex B) 14Table H Dimensions of plain, boss, integrally cast or forged, and welding neck flanges (for ratings see Table 2 and Annex B) 16Table J Dimensions of plain, boss, integrally cast or forged, and welding neck flanges (for ratings s
10、ee Table 2 and Annex B) 18Table K Dimensions of plain, integrally cast or forged, and welding neck flanges (for ratings see Table 2 and Annex B) 19Table R Dimensions of plain, integrally cast or forged, and welding neck flanges (for ratings see Table 2 and Annex B) 21Table S Dimensions of plain, int
11、egrally cast or forged, and welding neck flanges (for ratings see Table 2 and Annex B) 22Table T Dimensions of plain, integrally cast or forged, and welding neck flanges (for ratings see Table 2 and Annex B) 24Table B.1 Grey cast iron properties 34Table B.2 Temperature/pressure ratings for grey cast
12、 iron and malleable cast iron flanges see Clauses 5g) and 5h) 35BS 10:2009ii The British Standards Institution 2012BRITISH STANDARDTable B.3 Temperature/pressure ratings for copper alloy flanges sizes 12 in to 3 in (inclusive) see Clause 5j) 35Table B.4 Temperature/pressure ratings for copper alloy
13、flanges sizes over 3 in see Clause 5f) 36Table C.1 Application of bolts and stud-bolts see Figure 2a) and Figure 2b) 37Table C.2 Materials, dimensions and finish of bolts, stud-bolts and nuts 39Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 42
14、, an inside back cover and a back cover.BRITISH STANDARD The British Standards Institution 2012 iiiBS 10:2009ForewordPublishing informationThis British Standard is published by g33BSI Standards Limited, underlicence from The British Standards Institutiong34 and came into effecton 30 April 2009. It w
15、as prepared by Technical Committee PSE/15,Flanges. A list of organizations represented on this committee can beobtained on request to its secretary.SupersessionThis British Standard supersedes BS 10:1962, which is withdrawn.Information about this documentThe start and finish of text introduced or al
16、tered by Corrigendum No. 1is indicated in the text by tags g33 and g34.It should be noted that, apart from cast iron flanges, the hydraulic testpressure applied to a flange joint is limited to one-and-a-half timesthe highest rated pressure of the flange (see Clause 8).This is a full revision of the
17、standard, and introduces the followingprincipal changes: Materials have been updated; The standard has been re-arranged to reflect the most commonused materials and types in service; Review of tables:BS 10 flanges have been in use since 1904 and have beendeveloped continuously to meet increasing pre
18、ssure andtemperature requirements. At the time of this revision, flangejoints with carbon steel pipe flanges for high temperatures andpressures to the British Standard tables have been in servicethroughout the world for periods equal to the economic life of primary plant. The tables have therefore r
19、emained in thestandard for guidance. NOTE When it is required to convert the figures in this standard fromimperial units into metric units it is recommended that the conversionfactors and the table of conversion contained in BS 350, “Conversionfactors and tables”, be used. Attention is also drawn to
20、 BS 2856,“Precise conversion of inch and metric sizes on engineering drawings”. Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright)type. Its requirements are expressed in sentences in which theprincipal auxiliary verb is “shall”.Commentary, explanation and
21、 general informative material is presentedin smaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with
22、a British Standard cannot confer immunity fromlegal obligations.BS 10:2009iv The British Standards Institution 2012BRITISH STANDARDThis page deliberately left blankBRITISH STANDARD The British Standards Institution 2012 1BS 10:20091 ScopeThis British Standard specifies requirements for a series of c
23、arbon steel, alloy steel, cast iron and copper alloy flanges, and also appropriate bolts and nuts, for use with pipes, valves and fittings containing steam, oil, compressed air or water. NOTE 1 The use of flanges complying with this standard for temperatures below 17.8 C (0 F) should be agreed betwe
24、en purchaser and manufacturer. These flanges may also be used on pipes, valves and fittings carrying other fluids for which the same requirements for safety and joint tightness are appropriate.The applicability relationship between temperature and pressure for the above materials is specified for ea
25、ch table of flanges in Table 2 and Annex B.NOTE 2 The types of gasket, and gasket materials, and the surface finish of the jointing face are matters for agreement between the purchaser and the manufacturer. When a raised jointing face is specified the outside diameter of the gasket should extend at
26、least to the outside diameter of the raised face. For steel flanges when a raised jointing face is not specified, the gasket should be within the bolt holes.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the
27、 edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS 21, Specification for pipe threads for tubes and fittings where pressure-tight joints are made on the threads (metric dimensions)BS 84, Parallel screw threads of Whitwo
28、rth form RequirementsBS 916, Specification for black bolts screws and nuts Hexagon suitable for welding.3) Plain flanges 12 in thick and thicker, machined in the bore; suitable for welding-on to form one of the types in the appropriate application standard as required by the purchaser. The purchaser
29、 shall specify the type of preparation required.4) Welding neck flanges, machined in the bore to a diameter to be specified by the purchaser, and suitably bevelled for welding to pipes or fittings.b) Copper alloy flanges. Machined in the bore to slip over the outside diameter of the pipe or fitting;
30、 suitable for fusion welding (where applicable).8 Hydraulic testing of flange joints8.1 This standard does not specify the hydraulic test pressures for flanged pipes or components, details of which shall be obtained from the appropriate standards which specify test pressures for pipes or components
31、but in any case, the test pressure to be applied to the joint shall not exceed one-and-a-half times the highest rated pressures for steel and copper alloy flanges, and twice the highest rated pressures for cast iron flanges.8.2 Where flanged assemblies are not covered by any standard specifying test
32、 pressures but incorporate flanges conforming to this standard, or where any assembly is to be used for duties of a special nature, the test pressure shall be agreed between the purchaser and the manufacturer.9 CertificationThe flange manufacturer shall use respective procedures to ensure material t
33、raceability and to avoid material exchange and shall be able to provide retrospective certification for the base material used. Certificates shall be provided in accordance with BS ISO 10204, Type 2.1 as a minimum but the purchaser may also request a 2.2 or 3.1 certificate at their option.BRITISH ST
34、ANDARD The British Standards Institution 2012 5BS 10:2009Table 2Temperature/pressure ratings for carbon steel flanges see Annex BTableTemperature CMaximum hydraulic test pressure (lbf/in2)17.8 to 121.117.8 to 232.2260.0287.8315.6343.3371.1399427Temperature F0 to 2500 to 450500550600650700750800Press
35、ure (lbf/in2)A50 A)25 B)75D10095858070655550150E200185170155140130115100300F300280255235215195170150450H500465430395355320285250750J7006506005505004504003501 050K9008357707056455805154501 350R1 2001 1151 0309458557706856001 800S1 8001 6701 5451 4151 2851 1551 0309002 700T2 8002 6002 4002 2002 0001 8
36、001 6001 4004 200NOTE Intermediate values above 450F (232.2C) may be obtained by linear interpolation.A)It is customary in the gas industry to limit the use of Table A flanges to working gas pressures not exceeding 30lbf/in2. It is recommended that this limitation be also applied to compressed air.B
37、)This rating applies to temperatures above 121.1C (250 F) up to and including 232.2C (450 F) and does not apply to flange sizes above 36in.BS 10:20096 The British Standards Institution 2012BRITISH STANDARD10 Low temperature flanges and boltingCOMMENTARY ON CLAUSE 10Alternative materials may be used
38、provided that the mechanical properties at operating temperature are not inferior to those given in the specifications referred to below.Flanges and bolting for low temperature duty shall conform to the following minimum requirements.a) Steel flanges either plate, stamped, forged or cast and bolting
39、 material intended for use with pipes in accordance with BS 3603. Pressure ratings for these shall be stated by the purchaser.b) Where copper alloy flanges to this standard are used for temperatures down to 200 C (328 F), pressure ratings for these flanges shall be stated by the purchaser. Guidance
40、is provided in Table B.3 or Table B.4, temperature range 17.8 C to 121.1 C (0 F to 250 F), and is based on historical data contained in previous revisions of this standard.NOTE 9% aluminium bronze to BS 2032 is a suitable bolting material for the above low temperature range, but other copper alloys
41、may be used by agreement between the purchaser and the supplier.BRITISH STANDARD The British Standards Institution 2012 7BS 10:2009Table ADimensions of plain, boss, integrally cast or forged flanges (for ratings see Table 2 and Annex B)Flange size designation (nominal bore of pipe)Approximate outsid
42、e diameter of steel pipe A)Diameter of flangeBolt circle diameterNo. of boltsDiameter of bolts B)Dimensions of boss (Fig 4) C)Thickness of flangeBoss lengthDiameter at small end of bossMaximum diameter at root of bossGrey cast iron integrally cast or screwed on with bossMalleable cast iron screwed o
43、n with bossCopper alloy cast or wrought integral or boss or plain (Fig. 3)Wrought steel integral or plain (Fig. 3) or boss (Fig. 4)HDPNOABET1T2T3T4ininininininininininining3312g3427323 342 58412381 5161 121231614316D)341 11642784127161 121 341231614316D)1111324 123 144127161 782 11612316516316D)1 14
44、1 11164 343 7164127162 3162 932581451614D)1 121 29325 143 78412122 7162 3458143814D)22386412458122 15163 185851638516D)2 1236125458583 9163 21321116516716516D)33127 145 34458584 3164 13321116381238D)3 124861245811164 11165 18343891638D)44128 127458345 145 1234385838D)5512108 14458346 5166 3434121116
45、1266 12119 14458347 5167 341316121116126 5877581210 14858788 388 3413163412885813 1411 12858789 1210783412995814 1212 34858110 1211 187834581010 3416148341 11611 3412 316151634581212 3418168341 1813 3414 31615167834131419 1417 14834151678341415 E)20 3418 128781178151621 3419 1287811781622 3420 12127
46、8111617817182421 34127811161116781825 142312781116111678192026 12241278118118782027 3425 141278118118121222926 1212781181181BS 10:20098 The British Standards Institution 2012BRITISH STANDARDTable ADimensions of plain, boss, integrally cast or forged flanges (for ratings see Table 2 and Annex B) (con
47、tinued)Flange size designation (nominal bore of pipe)Approximate outside diameter of steel pipe A)Diameter of flangeBolt circle diameterNo. of boltsDiameter of bolts B)Dimensions of boss (Fig 4) C)Thickness of flangeBoss lengthDiameter at small end of bossMaximum diameter at root of bossGrey cast ir
48、on integrally cast or screwed on with bossMalleable cast iron screwed on with bossCopper alloy cast or wrought integral or boss or plain (Fig. 3)Wrought steel integral or plain (Fig. 3) or boss (Fig. 4)HDPNOABET1T2T3T4inininininininininininin223027 121211 3161316123243128 121211 316131612432 1229 341211 31613161262633 1430 341611 141272834 1431 341611 141293036 1433 342011 1413037 1434 342011 141333440 12382011 14118353642 124
