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1、BRITISH STANDARDBS 1560-3.3:1989Circular flanges for pipes, valves and fittings (Class designated) Part 3: Steel, cast iron and copper alloy flanges Section 3.3 Specification for copper alloy and composite flangesUDC 621.643.4 034.14:621.643.411.412.8:669.35:620.168:001.4:006.3/.8Licensed Copy: Inst

2、itute Of Technology Tallaght, Institute of Technology, Sun Jul 30 10:44:46 BST 2006, Uncontrolled Copy, (c) BSIBS 1560-3.3:1989This British Standard, having been prepared under the direction of the Piping Systems Components Standards Policy Committee, was published under the authority of the Board o

3、f BSI and comes into effect on30 June 1989 BSI 01-2000First published as BS 1560-2 November 1970First revision as BS 1560-3.3 June 1989The following BSI references relate to the work on this standard:Committee reference PSE/15Draft for comment 87/72072 DCISBN 0 580 17047 0Committees responsible for

4、this British StandardThe preparation of this British Standard was entrusted by the Piping Systems Components Standards Policy Committee (PSE/-) to Technical Committee PSE/15, upon which the following bodies were represented:British Chemical Engineering Contractors AssociationBritish Compressed Gases

5、 AssociationBritish Fluid Power AssociationBritish Foundry AssociationBritish Gas plcBritish Malleable Tube Fittings AssociationBritish Maritime TechnologyBritish Non-Ferrous Metals FederationBritish Pump Manufacturers AssociationBritish Steel IndustryBritish Valve and Actuator Manufacturers Associa

6、tion Ltd.Combustion Engineering AssociationCopper Development AssociationDepartment of Trade and Industry (National Engineering Laboratory)Ductile Iron Producers AssociationElectricity Supply Industry in England and WalesEnergy Industries CouncilEngineering Equipment and Materials Users AssociationG

7、AMBICA (BEAMA Ltd.)High Pressure Pipework Consultative CommitteeInstitution of Gas EngineersInstitution of Mechanical EngineersInstitution of Production EngineersInstitution of Water and Environmental Management (IWEM)Water Authorities AssociationAmendments issued since publicationAmd. No.Date of is

8、sueCommentsLicensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 30 10:44:46 BST 2006, Uncontrolled Copy, (c) BSIBS 1560-3.3:1989 BSI 01-2000iContentsPageCommittees responsibleInside front coverForewordii1Scope12Ranges of nominal sizes13Class designations and pressure/tem

9、perature ratings14Materials15Bolting26Dimensions27Flange facings28Facing finishes29Spot facing or back facing of flanges210Tolerances211Marking3Appendix A Information to be supplied by the purchaser15Appendix B Application and installation15Appendix C Use of metric bolting in lieu of inch bolting15F

10、igure 1 Flange codes4Figure 2 Dimensions of Class 150 flanges8Figure 3 Dimensions of Class 300 flanges10Table 1 Types of copper alloy and composite flanges1Table 2 Synoptic table5Table 3 Copper alloy materials7Table 4 Steel materials for composite and clad blank flanges7Table 5 Surface finish of fla

11、nge faces7Table 6 Dimensions of Class 150 flanges9Table 7 Dimensions of Class 300 flanges11Table 8 Tolerances12Table 9 Pressure/temperature ratings for copper alloys other than AB2 and CN 10714Table 10 Pressure/temperature ratings for copper alloys AB2 and CN 10714Table 11 Pressure/temperature ratin

12、gs for all copper alloy large size flanges14Table 12 Nominal bolt diameter15Table 13 Inch/metric bolt comparisons15Publications referred toInside back coverLicensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 30 10:44:46 BST 2006, Uncontrolled Copy, (c) BSIBS 1560-3.3:19

13、89ii BSI 01-2000ForewordThis Section of BS 1560 has been prepared under the direction of the Piping Systems Components Standards Policy Committee and constitutes a new Section of BS 1560 for Class designated copper alloy and composite flanges. For PN designated copper alloy and composite flanges ref

14、erence should be made to BS 4504-3.3.This Section of BS 1560 is related to ISO 7005-3 published by the International Organization for Standardization (ISO) in respect of flanges having nominal pressures PN 20 and PN 50 covered by the International Standard. The types of flanges and their size ranges

15、 are limited when compared to those flanges of the equivalent nominal pressure given in ISO 7005-3.The PN 6, PN 10, PN 16, PN 25 and PN 40 flanges given in ISO 7005-3 are related to PN designated flanges specified in BS 4504-3.3.To align with the format of ISO 7005, BS 1560-3 is published in three S

16、ections. Section 3.1: Specification for steel flanges; Section 3.2: Specification for cast iron flanges1); Section 3.3: Specification for copper alloy and composite flanges;This Section of BS 1560 specifies copper alloy and composite flanges which have compatible mating dimensions with steel flanges

17、 complying with BS 1560-3.1. In addition ANSI B16.24 published by the American National Standards Institute has been taken into account together with ISO 7005-3. Until such time as all three parts of ISO 7005 are published and this Section of BS 1560 is revised, this Section of BS 1560 specifies fla

18、nges having inch bolt sizes and bolt holes as specified in BS 1560-3.1.The flanges specified, with the exception of integral (code 321) flanges, are for attachment to copper or copper alloy tubes complying with BS 2871.The principles adopted in the preparation of this Section of BS 1560 are in accor

19、dance with the following.a) Dimensions, other than mating dimensions, are based on ISO 7005-3 for PN 20 (Class 150) and PN 50 (Class 300) flanges.b) Mating dimensions, including outside diameters, pitch circle diameters, bolt holes and bolt sizes, comply with BS 1560-3.1.c) Tolerances are generally

20、in accordance with ISO 7005-3.d) Pressure/temperature ratings are in accordance with ISO 7005-3.e) Surface finish and spot facing or back facing are in accordance with ISO 7005-3.f) Flanges have been additionally designated by code numbers to maintain harmonization with BS 4504-3.3 and BS 1560-3.1 w

21、hich are based on the principles agreed internationally for designating flanges by type numbers.It should be noted that the thicknesses of code 305 blank flanges have nominal thicknesses different to those specified in the related specification ANSI B16.24; the thicknesses specified in ANSI B16.24 a

22、re minimum values.Guidance notes and recommendations have been included in Appendix B. Appendix B is not intended to be exhaustive.The various gasket types, dimensions, design characteristics and materials are outside the scope of this Section of BS 1560. For dimensions of gaskets reference should b

23、e made to BS 3381 for spiral wound gaskets and to BS 7076-1, BS 7076-3 and BS 7076-4 for other types of gaskets.1) In preparation.Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 30 10:44:46 BST 2006, Uncontrolled Copy, (c) BSIBS 1560-3.3:1989 BSI 01-2000iiiThis stan

24、dard specifies inch bolting only and the use of metric bolting is outside the scope of this Section of BS 1560. However, for information Appendix C gives the proposed metric bolt sizes to be used in lieu of the inch sizes specified. Users of metric bolting should note that bolt hole clearances may b

25、e reduced or increased.Assessed capability. Users of this Section of BS 1560 are advised to consider the desirability of assessment and registration of a suppliers quality systems against the appropriate Part of BS 5750 by a third party certification body.NOTEFor the purposes of this Section of BS 1

26、560 no difference is intended in the meaning between pipe and tube although idiomatic use prefers sometimes the one and sometimes the other.A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applicat

27、ion.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 16, an inside back cover and a back cover.This standard has been updated (see copyright date) and m

28、ay have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 30 10:44:46 BST 2006, Uncontrolled Copy, (c) BSIivblankLicensed Copy: Institute Of Technology Tallaght, Insti

29、tute of Technology, Sun Jul 30 10:44:46 BST 2006, Uncontrolled Copy, (c) BSIBS 1560-3.3:1989 BSI 01-200011 ScopeThis Section of BS 1560 specifies requirements for Class designated circular copper alloy and composite flanges in Class 150 and Class 300 ratings and in nominal sizes up to 36 in of the t

30、ype given in Table 1.Table 1 Types of copper alloy and composite flangesThis Section of BS 1560 specifies the types of flanges and their facings, dimensions, tolerances, bolt sizes, flange face surface finish, marking, materials for bolting and flange materials together with their associated pressur

31、e/temperature ratings.NOTE 1Details of the tube stops used in conjunction with code 314 flanges are outside the scope of this Section of BS 1560.NOTE 2To assist purchasers Appendix A lists information which should be supplied when ordering flanges.NOTE 3The routine inspection and pressure testing ar

32、e outside the scope of this Section of BS 1560 but some guidance is given in Appendix B.NOTE 4The titles of the publications referred to in this standard are listed on the inside back cover.2 Ranges of nominal sizesThe ranges of nominal sizes from in to 36 in applicable to each flange code and for e

33、ach Class designation shall be as given in Table 2, Table 6 and Table 7.3 Class designations and pressure/temperature ratings3.1 Class designationsThe Class designation of flanges shall be either:a) Class 150, orb) Class 300.3.2 Pressure/temperature ratingsThe pressure/temperature ratings of flanges

34、 manufactured from the materials specified in Table 3 shall be as given in Table 9, Table 10 and Table 11 for the applicable materials and shall be the maximum allowable non-shock working gauge pressure at the temperatures shown.NOTE 1Linear interpolation is permitted for intermediate temperatures.

35、The relevant pressures and temperatures are those of the fluid in the pipe or fitting.NOTE 2The rating of flanges is not necessarily the rating of the whole pipework system. Gasket materials can also impose limitations on the pressure/temperature rating of a flanged joint and the gasket manufacturer

36、 should be consulted when selecting the material of the gasket.3.3 Rating of flanged jointsIf two flanges in a flanged joint do not have the same pressure/temperature rating, the maximum permissible working pressure of the joint at any temperature shall not exceed the lower of the two flange ratings

37、.4 Materials4.1 Flange materialsCopper alloy components of flanges shall be manufactured from the materials given in Table 3 and steel components of flanges shall be manufactured from the materials given in Table 4.NOTE 1Where there is an appropriate application standard it is the responsibility of

38、the purchaser to ensure that the requirements of that standard are met.NOTE 2If a protective coating such as zinc coating or painting on steel components is required, the purchaser should state the requirements on the enquiry and/or order (see Appendix A).Code no.aDescription301Plate flange in coppe

39、r alloy (for brazing or welding)304Loose flange in steel with a weld-neck collar in copper alloy (for welding)305Blank flange in copper alloy or in steel clad with the jointing face in copper alloy307Loose flange in steel with a slip-on collar in copper alloy (for brazing or welding)311Weld-neck fla

40、nge in copper alloy (for welding)312Hubbed slip-on flange in copper alloy (for brazing or welding)314Hubbed slip-on flange in copper alloy supplied with tube stops (for brazing or welding)321Integral flange in copper alloy as part of some other equipment or componentNOTE 1Figure 1 illustrates flange

41、s according to description and code numbers.NOTE 2Flanges may be designated by description or code numbers.a Code numbers have been made non-consecutive to permit possible future additions.Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 30 10:44:46 BST 2006, Uncontr

42、olled Copy, (c) BSIBS 1560-3.3:19892 BSI 01-20004.2 Bolting materialsMaterials for bolting shall be as follows:a) materials specified in BS 1768, BS 1769 and BS 4882 (inch);b) materials specified in ASTM A193 and ASTM A194;c) BS 2872 and BS 2874, grades CA 104 and CA 105;d) proprietary high strength

43、 cupro-nickel alloys.5 Bolting5.1 Bolt sizes shall be as given in Table 6 and Table 7, as appropriate.5.2 Studbolts shall comply with BS 4882 except that form shown in Figure 3(b) of BS 4882:1978 shall apply only to studbolts of material other than alloy steel.5.3 The mating surfaces of all bolt hea

44、ds and nuts shall be full faced.6 Dimensions6.1 Flange dimensionsFlanges shall have the dimensions appropriate to their nominal sizes, types and Class designations as given in Table 6 and Table 7 and clause 9, if appropriate.NOTEA summary of the various types of flanges specified showing the nominal

45、 sizes applicable to each type and to each Class is given in Table 2.6.2 Tube sizesDimensions of flanges shall be compatible with the tube sizes given in Table 6 and Table 7.NOTEAlternative values are specified for tube outside diameters for 10 in (DN 250) and it is therefore essential that the purc

46、haser should specify the tube size for which the flange is required (see Appendix A).6.3 HubsThe hub of hubbed slip-on copper alloy flanges (code 312) and hubbed slip-on copper alloy flanges with tube stops (code 314) shall be either:a) parallel; orb) have a draft angle of not more than 4 on the out

47、side surface for forging or casting purposes.6.4 Bolt holesBolt holes shall be equally spaced on the pitch circle diameter, and in the case of integral flanges, shall be positioned off-centre.7 Flange facingsPlate flanges (code 301), copper alloy (unclad) flanges (code 305), copper alloy weld-neck f

48、langes (code 311), hubbed slip-on flanges (code 312), hubbed slip-on flanges supplied with tube stops (code 314) and integral flanges (code 321) shall be supplied with flat faces for use with full face gaskets.NOTEWhen codes 301, 305 (unclad), 311, 312, 314 and 321 flanges are required to be bolted

49、to existing raised face type steel or cast iron flanges, then the raised face on the steel or iron flange should be removed.8 Facing finishes8.1 All flange jointing faces shall be machine finished and when compared by visual or tactile means with reference specimens, the surface finish shall comply

50、with the values given in Table 5.NOTE 1It is not intended that instrument measurements be taken on the faces themselves and the Ra and Rz values as defined in BS 1134 relate to the reference specimens.NOTE 2Requirements for special coatings or finishes should be stated in the enquiry and/or order so