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110 Pages·2007·1.43 MB·English

ASME B16.47-2006
(Revision of ASME B16.47-1996)
Large Diameter
Steel Flanges
NPS 26 Through NPS 60
Metric/Inch Standard
AN AMERICAN NATIONAL STANDARD --``,,```,`,`,`,,,``,,``,,,,`,`,-`-`,,`,,`,`,,`---
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ASME B16.47-2006
(Revision of ASME B16.47-1996)
Large Diameter
Steel Flanges
NPS 26 Through NPS 60
Metric/Inch Standard
AN AMERICAN NATIONAL STANDARD
Three Park Avenue • New York, NY 10016 --``,,```,`,`,`,,,``,,``,,,,`,`,-`-`,,`,,`,`,,`---
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DateofIssuance:May31,2007
The next edition of this Standard is scheduled for publication in 2011. There will be no addenda
issued to this edition.
ASME issues written replies to inquiries concerning interpretations of technical aspects of this
Standard. Interpretations are published on the ASME Web site under the Committee Pages at
http://cstools.asme.org as they are issued.
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TheAmericanSocietyofMechanicalEngineers
ThreeParkAvenue,NewYork,NY10016-5990
Copyright©2007by
THEAMERICANSOCIETYOFMECHANICALENGINEERS
Allrightsreserved
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CONTENTS
Foreword .............................................................................. v
Committee Roster ..................................................................... vi
Correspondence With the B16 Committee .............................................. vii
1 Scope ............................................................................. 1
2 Pressure–Temperature Ratings ...................................................... 2
3 Component Size: Nominal Pipe Size ................................................. 3
4 Marking ........................................................................... 3
5 Materials .......................................................................... 3
6 Dimensions ........................................................................ 5
7 Tolerances ......................................................................... 6
8 Pressure Testing.................................................................... 6
Figures
1 Welding Ends (Welding Neck Flanges, No Backing Rings) .......................... 7
2 Welding Ends (Welding Neck Flanges With Backing Rings) ......................... 8
3 Welding Ends (Welding Neck Flanges) ............................................. 9
Tables
1 List of Material Specifications ..................................................... 10
2 List of Bolting Specifications (Applicable ASTM Specifications) ..................... 12
3 Pressure–Temperature Ratings for Group 1.1 Materials ............................. 13
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12 Pressure–Temperature Ratings for Group 1.13 Materials ............................ 22
13 Pressure–Temperature Ratings for Group 1.14 Materials ............................ 23
14 Pressure–Temperature Ratings for Group 1.15 Materials ............................ 24
15 Pressure–Temperature Ratings for Group 1.17 Materials ............................ 25
16 Pressure–Temperature Ratings for Group 2.1 Materials ............................. 26
17 Pressure–Temperature Ratings for Group 2.2 Materials ............................. 27
18 Pressure–Temperature Ratings for Group 2.3 Materials ............................. 28
19 Pressure–Temperature Ratings for Group 2.4 Materials ............................. 29
20 Pressure–Temperature Ratings for Group 2.5 Materials ............................. 30
21 Pressure–Temperature Ratings for Group 2.6 Materials ............................. 31
22 Pressure–Temperature Ratings for Group 2.7 Materials ............................. 32
23 Pressure–Temperature Ratings for Group 2.8 Materials ............................. 33
24 Pressure–Temperature Ratings for Group 2.9 Materials ............................. 34
25 Pressure–Temperature Ratings for Group 2.10 Materials ............................ 35
26 Pressure–Temperature Ratings for Group 2.11 Materials ............................ 36
27 Pressure–Temperature Ratings for Group 2.12 Materials ............................ 37
28 Dimensions of Ring-Joint Facings .................................................. 38
29 Permissible Imperfections in Flange Facing Finish .................................. 38
iii
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30 Dimensions of Class 150 Series A Flanges .......................................... 39
31 Dimensions of Class 300 Series A Flanges .......................................... 40
32 Dimensions of Class 400 Series A Flanges .......................................... 41
33 Dimensions of Class 600 Series A Flanges .......................................... 42
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Mandatory Appendices
I Pressure–Temperature Ratings and Dimensional Data for Classes 75, 150, 300,
400, 600, and 900 Flanges in U.S. Customary Units ............................... 51
II Quality System Program .......................................................... 92
III References ........................................................................ 93
Nonmandatory Appendices
A Methods Used for Establishing Pressure–Temperature Ratings ...................... 95
B Gaskets (Other Than Ring-Joint) ................................................... 99
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FOREWORD
InNovember1980,ataskforcewasappointedwithinSubcommitteeCoftheAmericanNational
Standards(ANSI)B16CommitteetodevelopastandardforpipeflangesinsizeNPS26through
NPS48.Everyattemptwasmadetostandardizethosedimensionsthatexistedwithintheindustry
for the materials covered by ANSI B16.5.
Promptedbysuggestionsreceivedfromcommitteemembers,thetaskforcewasauthorizedto
increase the size range to NPS 60. The first draft was developed in December 1982 to include
Class75throughClass1500forthesizerangeNPS26throughNPS60.Flangedimensionswere
basedontheManufacturersStandardizationSocietyStandardPractice(MSSSP)44flanges,except
for Class 75 flanges that are ANSI/API 605 flanges.
At the request of the American Petroleum Institute (API), flange dimensions, in accordance
with the API Standard 605, were included in the subsequent drafts. Class 1500 flanges were
deleted due to a lack of interest in using large size flanges in that pressure–temperature rating.
TheAPI-605flangesforClass150and300andforsizesNPS36andsmallerforclasseshigher
than Class 300 are not compatible with the MSS SP-44 flanges. Thus, the MSS SP-44 flanges are
designatedasSeriesAflangesandtheAPI-605flangesaredesignatedasSeriesBflangesinthis
Standard. Materialscovered inthis Standardare asin ANSIB16.5, exceptnickel basealloys are
excluded. Pressure–temperature ratings are in accordance with ANSI B16.5.
In1982,AmericanNationalStandardsCommitteeB16wasreorganizedastheAmericanSociety
ofMechanicalEngineers(ASME)B16CommitteeoperatingunderproceduresaccreditedbyANSI.
FollowingapprovalbytheStandardsCommitteeandASME,approvalasanAmericanNational
SrgaBNentroavaoTTditniluhhiseidopeneirsnadsc1raa,2ldf9unla0l9addd0Sw6n6etdagadPEeEnserddsddeegfisipatavitsircveioeudoerernrnmnafeoilaniinblossVliystoseOphihwsbArecslerrteeeNseodlreqbfeSnlCufevaIltrioniaeorsnmdge3inomg,emineJ1nfeuss9ain.tnm9cmttFei6esneoae,1twgl,rrrl2ekoiiAi,cvtemwh1idNusi9pnentSw9ehdgiI0rtei.fstpaae,hnprpcaeeptmpssiwrorsoopounvrdrvsreiaeee,mls–dtahbitadgeyartdnmyhnteaehpudoteiennpobrSeinratlteisatmnvAu,ndiwraSodetMuafietlrrsrahaEdintaesUiglBndCe.g1giSsto6rs.iam.ofC4fodno7murer-s1aSiostt9seeotr9revmais6eeepn.arsaearnABcyldimfmfuiAlcnaaeaStnirtetiMgiscroeaiiEnasnnl,,, --``,,```,`,`,`,,,``,,``,,,,`,`,-`-`,,`,,`,`,,`---
eitherparentheticalorseparateforms.MandatoryAppendixIhasbeenprovidedafterthemain
text for convenience to cover ratings and dimensions in U.S. Customary units. Inch dimension
boltholeswereretainedforflangesmanufacturedtometricdimensionstoavoidfitupproblems.
Development of metric dimensions was done to reflect the intended precision of the dimension
ratherthanbynumericalconversion.Forsomematerialspressure–temperatureratingshavebeen
revisedtoreflectrevisionstomaterialstrengthproperties(tensileandyield)listedintheASME
BoilerandPressureVesselCode,SectionII.Somematerialshavebeenassignedtodifferentrating
tables in order to minimize changes to ratings for commonly used materials.
AllrequestsforinterpretationorsuggestionsforrevisionsshouldbesenttotheAdministrative
SecretaryB16,TheAmericanSocietyofMechanicalEngineers,ThreeParkAvenue,NewYork,NY
10016-5990.Asanalternative,inquiriesmaybesubmittedviae-mailto:[email protected].
ASME B16.47-2006 was approved by the American National Standards Institute on
November 6, 2006.
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ASME B16 COMMITTEE
Standardization of Valves, Flanges, Fittings, and Gaskets
(ThefollowingistherosteroftheCommitteeatthetimeofapprovalofthisStandard.)
STANDARDS COMMITTEE OFFICERS
H.R.Sonderegger,Chair
M.L.Nayyar,ViceChair
U.D’Urso,Secretary
STANDARDS COMMITTEE PERSONNEL
R.W.Barnes,AnricEnterprises,Inc. M.Katcher,HaynesInternational
W.B.Bedesem,ExxonMobilResearchandEngineeringCo. W.N.McLean,NewcoValves
D.A.Buccicone,ElkhartProductsCorp. T.A.McMahon,FisherControlsInternational,Inc.
M.A.Clark,Nibco,Inc. M.L.Nayyar,BechtelPowerCorp.
U.D’Urso,TheAmericanSocietyofMechanicalEngineers J.D.Page,U.S.NuclearRegulatoryCommission
C.E.Floren,MuellerCo. R.A.Schmidt,Trinity-Ladish
D.R.Frikken,BechtEngineering H.R.Sonderegger,AnvilInternational,Inc.
G.G.Grills,U.S.CoastGuard W.M.Stephan,Flexitallic,L.P.
M.L.Henderson,ForgitalUSA T.F.Stroud,DuctileIronPipeResearchAssociation
G.A.Jolly,VogtValves/FlowserveCorp. D.A.Williams,SouthernCompanyServices
SUBCOMMITTEE C—STEEL FLANGES AND FLANGED FITTINGS
M.L.Nayyar,Chair,BechtelPowerCorp. C.L.Henley,TaylorForgeEngineeredSystems,Inc.
U.D’Urso,Secretary,TheAmericanSocietyofMechanical R.E.Johnson,Consultant
Engineers M.Katcher,HaynesInternational
A.Appleton,AlloyStainlessProductsCo.,Inc. R.Koester,TheWilliamPowellCo.
W.B.Bedesem,ExxonMobilResearchandEngineeringCo. W.N.McLean,NewcoValves
R.Chakravarti,FosterWheelerUSACorp. W.H.Patrick,TheDowChemicalCo.
C.E.Davila,CraneValves T.V.Ramakrishnan,ForgedVesselConnections
B.Dennis,KerkauManufacturing T.C.Rentschler,SolutiaInc.
J.P.Ellenberger,WFIInternational R.A.Schmidt,Trinity-Ladish
D.R.Frikken,BechtEngineering J.P.Tucker,FlowServe
M.L.Henderson,ForgitalUSA M.M.Zaidi,JacobsEngineering
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CORRESPONDENCE WITH THE B16 COMMITTEE
General. ASME Standards are developed and maintained with the intent to represent the
consensusofconcernedinterests.Assuch,usersofthisStandardmayinteractwiththeCommittee
by requesting interpretations, proposing revisions, and attending Committee meetings. Corre-
spondence should be addressed to:
Secretary, B16 Standards Committee
The American Society of Mechanical Engineers
--``,,```,`,`,`,,,``,,``,,,,`,`,-`-`,,`,,`,`,,`--- toahsfaAPTtsthrhpsoaeeeppacSoCnpitsfeoaiaiacnmnlrtgdaemnasrRenriectpdatevo.etsiiessAsvsiaoewiprb,npyelsierlno.co,qrovcRuTNmdeietihedreievsnirwsieiergsrseepiavYotmbrPhinoolsaeeraspikro,yoakpa,nsrbsaNsaeAerdlwaYvsmesgeimufa1rnlolbad0uorpm0bener1heseip6ttvpt-nere5iaurusd9itbiome9oldvd0inbsiisabhcearyete(lodsl-tyhm)t,phetaetioehisrlxietoSpthodtpeea:irrnciSoSeadetpnlaaclocynrrse.eddetg.adaarSrdiyuwnBcteoh1odr6dpif@nirrnoacogosmpm,roptasehona.eordlasratgapse.hpdcolhieucatlaandtigiloebednes
description of the reasons for the proposal, including any pertinent documentation.
Interpretations. Uponrequest,theB16Committeewillrenderaninterpretationofanyrequire-
mentoftheStandard.Interpretationscanonlyberenderedinresponsetoawrittenrequestsent
to the Secretary of the B16 Standards Committee.
The request for interpretation should be clear and unambiguous. It is further recommended
that the inquirer submit his/her request in the following format:
Subject: Cite the applicable paragraph number(s) and the topic of the inquiry.
Edition: Cite the applicable edition of the Standard for which the interpretation is
being requested.
Question: Phrasethequestionasarequestforaninterpretationofaspecificrequirement
suitableforgeneralunderstandinganduse,notasarequestforanapproval
ofaproprietarydesignorsituation.Theinquirermayalsoincludeanyplans
or drawings, which are necessary to explain the question; however, they
should not contain proprietary names or information.
Requests that are not in this format will be rewritten in this format by the Committee prior
to being answered, which may inadvertently change the intent of the original request.
ASME procedures provide for reconsideration of any interpretation when or if additional
information that might affect an interpretation is available. Further, persons aggrieved by an
interpretationmayappealtothecognizantASMECommitteeorSubcommittee.ASMEdoesnot
“approve,”“certify,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.
Attending Committee Meetings. TheB16StandardsCommitteeregularlyholdsmeetings,which
are open to the public. Persons wishing to attend any meeting should contact the Secretary of
the B16 Standards Committee.
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viii
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ASMEB16.47-2006
--``,,```,`,`,`,,,``,,``,,,,`,`,-`-`,,`,,`,`,,`--- NPSL2A6RTGHREODUGIAHMNPESTE6R0 MSETTEREICL/IFNLCAHNSGTAENSDARD
1 SCOPE ratingsof anearlieredition ofthisStandard, thoserat-
ings are applicable, except as may be governed by the
1.1 General
applicable code or regulation.
This Standard covers pressure–temperature ratings,
1.5 User Accountability
materials,dimensions,tolerances,marking,andtesting
for pipe flanges in sizes NPS 26 through NPS 60. This Standard cites responsibilities that are to be
Includedhereareflangeswithratingclassdesignations assumedbytheflangeuserintheareasof,forexample
75,150,300,400,600, and900withrequirementsgiven (a) application
inbothSI(metric)andU.S.Customaryunits,withdiam- (b) installation
eterofboltsandflangeboltholesexpressedininchunits. (c) system pressure testing
This Standard is limited to (d) operation
(a) flanges made from cast or forged materials (e) material selection
(b) blind flanges made from cast, forged, or plate
1.6 Quality Systems
materials (see Tables 1 and 2)
Also,includedinthisStandardarerequirementsand Requirements relating tothe product manufacturer’s
recommendations regarding flangebolting, flange gas- Quality System Program are described in Mandatory
kets, and flange joints. Appendix II.
1.2 Flange Series 1.7 Relevant Units
This Standard provides two series of flange dimen- This Standard states values in both SI (metric) and
sions. Series A specifies flange dimensions for general U.S.Customaryunits.Asanexception,diameterofbolts
useflanges.SeriesBspecifiesflangedimensionsforcom- and flange bolt holes are expressed in inch units only.
Thesesystemsofunitsaretoberegardedseparatelyas
pactflangesthat,inmostcases,havesmallerboltcircle
standard.Withinthetext,theU.S.Customaryunitsare
diameters than Series A flanges. These two series of
shown in parentheses or in separate tables. The values
flanges are, in general, not interchangeable. The user
statedineachsystemarenotexactequivalents;therefore,
should recognize that some flanged valves, equipment
itisrequiredthateachsystemofunitsbeusedindepen-
boltedbetweenflanges,andflangedequipmentmaybe
dently of the other. Except for diameter of bolts and
compatible with only one series of these flanges.
flange bolt holes, combining values from the two sys-
1.3 References tems constitutes nonconformance with the Standard.
Codes,standards,andspecifications,containingpro- 1.8 Service Conditions
visions to the extent referenced herein, constitute
Criteriaforselectionofmaterialssuitableforparticu-
requirements of this Standard. These reference docu-
larfluidservicearenotwithinthescopeofthisStandard.
ments are listed in Mandatory Appendix III.
1.9 Convention
1.4 Time of Purchase, Manufacture, or Installation
For the purpose of determining conformance with
Thepressure–temperatureratingsinthisStandardare thisStandard,theconventionforfixingsignificantdigits
applicable upon itspublication to all flangeswithin its wherelimits,maximumandminimumvaluesarespeci-
scope that otherwise meet its requirement. For unused fied,shallberoundedasdefinedinASTMPracticeE29.
flangesmaintainedininventory,themanufacturerofthe Thisrequiresthatanobservedorcalculatedvalueshall
flangemaycertifyconformancetothisEdition,provided beroundedofftothenearestunitinthelastrighthand
thatitcanbedemonstratedthatallrequirementsofthis digitusedforexpressingthe limit.Decimalvaluesand
Edition have been met. Where such components were tolerances do not imply a particular method of mea-
installed in accordance with the pressure–temperature surement.
1
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