ASME B16.5-2009 管法兰和法兰管件.pdf

AN AMERICAN NATIO NAL STANDARDASME B16.5-2009(Revision of ASME B16.5-2003)Pipe Flanges andFlanged FittingsNPS 1/2 Through NPS 24 Metric/Inch StandardASME B16.5-2009(Revision of ASME B16.5-2003)Pipe Flanges andFlanged FittingsNPS12Through NPS 24Metric/Inch StandardAN AMERICAN NATIONAL STANDARDDate of Issuance:June 30,2009The next edition of this Standard is scheduled for publication in 2012.There will be no addendaissued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as they are issued.Items approved as errata to this edition are published on the ASME Web site under Committee Pagesat http:/cstools.asme.org.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.viCommittee Roster.ixCorrespondence With the B16 Committee.x1Scope.12PressureTemperature Ratings.23Component Size.34Marking.35Materials.76Dimensions.97Tolerances.128Pressure Testing.14Figures1Method of Designating Location of Auxiliary Connections WhenSpecified.152Method of Designating Outlets of Reducing Fittings in Specifications.163Thread Length for Connection Tapping.174Socket Welding for Connections.175Butt Welding for Connections.176Bosses for Connections.177End Flange Facings and Their Relationship to Flange Thickness andCenter-to-End and End-to-End Dimensions.188Bevel for Wall Thicknesses t From 5 mm to 22 mm Inclusive.199Bevel for Wall Thicknesses t Greater Than 22 mm.2010Inside Contour for Use With Rectangular Backing Ring.2011Inside Contour for Use With Taper Backing Ring.2112Bevel for Outside Thickness.2113Bevel for Inside Thickness.2114Bevel for Combined Thickness.2215Straight Hub Welding Flanges.22Tables1AList of Material Specifications.41BList of Bolting Specifications Applicable ASTM Specifications.81CFlange Bolting Dimensional Recommendations.122-1.1PressureTemperature Ratings for Group 1.1 Materials.232-1.2PressureTemperature Ratings for Group 1.2 Materials.242-1.3PressureTemperature Ratings for Group 1.3 Materials.252-1.4PressureTemperature Ratings for Group 1.4 Materials.262-1.5PressureTemperature Ratings for Group 1.5 Materials.272-1.7PressureTemperature Ratings for Group 1.7 Materials.282-1.9PressureTemperature Ratings for Group 1.9 Materials.29iii2-1.10PressureTemperature Ratings for Group 1.10 Materials.302-1.11PressureTemperature Ratings for Group 1.11 Materials.312-1.13PressureTemperature Ratings for Group 1.13 Materials.322-1.14PressureTemperature Ratings for Group 1.14 Materials.332-1.15PressureTemperature Ratings for Group 1.15 Materials.342-1.17PressureTemperature Ratings for Group 1.17 Materials.352-1.18PressureTemperature Ratings for Group 1.18 Materials.362-2.1PressureTemperature Ratings for Group 2.1 Materials.372-2.2PressureTemperature Ratings for Group 2.2 Materials.382-2.3PressureTemperature Ratings for Group 2.3 Materials.392-2.4PressureTemperature Ratings for Group 2.4 Materials.402-2.5PressureTemperature Ratings for Group 2.5 Materials.412-2.6PressureTemperature Ratings for Group 2.6 Materials.422-2.7PressureTemperature Ratings for Group 2.7 Materials.432-2.8PressureTemperature Ratings for Group 2.8 Materials.442-2.9PressureTemperature Ratings for Group 2.9 Materials.452-2.10PressureTemperature Ratings for Group 2.10 Materials.462-2.11PressureTemperature Ratings for Group 2.11 Materials.472-2.12PressureTemperature Ratings for Group 2.12 Materials.482-3.1PressureTemperature Ratings for Group 3.1 Materials.492-3.2PressureTemperature Ratings for Group 3.2 Materials.492-3.3PressureTemperature Ratings for Group 3.3 Materials.502-3.4PressureTemperature Ratings for Group 3.4 Materials.502-3.5PressureTemperature Ratings for Group 3.5 Materials.512-3.6PressureTemperature Ratings for Group 3.6 Materials.522-3.7PressureTemperature Ratings for Group 3.7 Materials.532-3.8PressureTemperature Ratings for Group 3.8 Materials.542-3.9PressureTemperature Ratings for Group 3.9 Materials.552-3.10PressureTemperature Ratings for Group 3.10 Materials.562-3.11PressureTemperature Ratings for Group 3.11 Materials.562-3.12PressureTemperature Ratings for Group 3.12 Materials.572-3.13PressureTemperature Ratings for Group 3.13 Materials.582-3.14PressureTemperature Ratings for Group 3.14 Materials.592-3.15PressureTemperature Ratings for Group 3.15 Materials.602-3.16PressureTemperature Ratings for Group 3.16 Materials.612-3.17PressureTemperature Ratings for Group 3.17 Materials.622-3.19PressureTemperature Ratings for Group 3.19 Materials.623Permissible Imperfections in Flange Facing Finish for Raised Face andLarge Male and Female Flanges.634Dimensions of Facings(Other Than Ring Joints,All Pressure RatingClasses).645Dimensions of Ring-Joint Facings(All Pressure Rating Classes).666Reducing Threaded and Slip-On Flanges for Classes 150 Through2500.707Templates for Drilling Class 150 Pipe Flanges and Flanged Fittings.718Dimensions of Class 150 Flanges.729Dimensions of Class 150 Flanged Fittings.7510Templates for Drilling Class 300 Pipe Flanges and Flanged Fittings.8011Dimensions of Class 300 Flanges.8112Dimensions of Class 300 Flanged Fittings.8413Templates for Drilling Class 400 Pipe Flanges.8814Dimensions of Class 400 Flanges.8915Templates for Drilling Class 600 Pipe Flanges and Flanged Fittings.9116Dimensions of Class 600 Flanges.9217Templates for Drilling Class 900 Pipe Flanges and Flanged Fittings.9418Dimensions of Class 900 Flanges.95iv19Templates for Drilling Class 1500 Pipe Flanges.9720Dimensions of Class 1500 Flanges.9821Templates for Drilling Class 2500 Pipe Flanges.10022Dimensions of Class 2500 Flanges.101Mandatory AppendicesIThreading of Pipe for American National Standard Threaded Flanges.103IIPressureTemperature Ratings and Dimensional Data for Classes 150,300,400,600,900,1500,and 2500 Flanges and Classes 150 and 300Flanged Fittings in U.S.Customary Units.105IIIReferences.193Nonmandatory AppendicesAMethod Used for Establishing PressureTemperature Ratings.196BLimiting Dimensions of Gaskets Other Than Ring Joint Gaskets.200CMethod for Calculating Bolt Lengths.202DQuality System Program.204EDimensions of Classes 400,600,900,1500,and 2500 Flanged Fittings inU.S.Customary Units.205vFOREWORDIn1920,theAmericanEngineeringStandardsCommitteelatertheAmericanStandardsAssocia-tions(ASA)organized Sectional Committee B16 to unify and further develop standards for pipeflanges and fittings(and later for valves and gaskets).Cosponsors of the B16 Committee wereASME,the Heating and Piping Contractors National Association now Mechanical ContractorsAssociation of America(MCAA),and the Manufacturers Standardization Society of the Valvesand Fittings Industry(MSS).Cosponsors were later designated as cosecretariat organizations.The Committee soon recognized the need for standardization of steel pipe flanges.In May,1923,Subcommittee 3 was organized to develop such standards for pressures in the 250-psi to3,200-psi range and for elevated temperatures.Active work began in October,including steelflanged fittings.The first proposed standard was submitted to the Committee in April 1926 andapproved by letter ballot in December.After favorable review by the three sponsor organizations,the Standard was approved as American Tentative Standard B16e in June 1927.Experience in using the Standard showed the need for hub dimensions of companion flangesand for other changes,including rerating of 250-lb and 1,350-lb flanges and development offlanged fittings with integral bases.An investigation was made into the factors determiningstiffness of flanges and flange hubs.The revised edition was approved as ASA B16E-1932.A revision was initiated in 1936,stimulated by suggestions from Committee members andindustrial users.The resulting 1939 edition contained standards for welding neck flanges(com-pleted in March 1937),1,500-lb flanges in the 14-in.through 24-in.range,2,500-lb flanges andflanged fittings in the12-in.through 12-in.range,and dimensions for a full line of ring jointflanges developed by the American Petroleum Institute.Pressuretemperature ratings for alloysteel flanges and fittings,developed by Subcommittee 4,were included for the first time.In August 1942,the War Production Board requested a review of measures to conserve vitalmaterials in piping components.A special War Committee of B16 was appointed and,operatingunder War Standard Procedure,developed revised pressuretemperature ratings for all materialsand pressure classes.The ratings were published as American War Standard B16e5-1943.In 1945,under normal procedures,Subcommittees 3 and 4 reviewed the 1939 standard and 1943 ratingsand recommended adoption of the wartime ratings.Their report was approved as SupplementNo.1 to B16e-1939 and published as ASA B16e6-1949.In addition to ratings,the supplementupdated material specification references and added a table of metal wall thickness for welding-end valves.Subcommittee 3 then began a revision of the entire standard.Technically,the 1949 Supplementwas absorbed,new materials were recognized,a general rating method was developed andadded as an appendix,and welding end preparations were expanded.Editorially,a new style ofpresentation was worked out,including tables rearranged for easier use.Approval by SectionalCommittee,cosponsors,and ASA resulted in the publication of ASA B16.5-1953(designationchanged from B16e).Work soon began on further revisions.Class B ratings were deleted,and Class A ratings wereclarified as the standard.An appendix defined qualifications for gaskets,other than ring joint,which would merit the ratings.Another appendix defined the method for calculating bolt lengths,including the measurement of stud bolt length between thread ends instead of points.Pressuretemperature ratings for several new materials were added,the table of welding end dimensionswas expanded,and the temperatures used in determining ratings were redefined.The resultingnew edition,after approval,was published as ASA B16.5-1957.The more modest revision approved as ASA B16.5-1961 changed the text to clarify the intentor to make requirements easier to administer.The next revision began in 1963 with nearly 100commentsandsuggestions.Nofundamentalchangesweremade,butthetextwasfurtherclarified,and wall thicknesses less then14in.for flanged fittings were recognized in the 1968 edition.A new joint study of ratings between Subcommittees 3 and 4 was initiated before the nextrevision.Based on the Subcommittee 4 report,the rating procedure was revised,and a ratingvibasis for Class 150(150 lb)flanges was developed.New product forms,bar and plate,were addedfor special applications,including fabricated flanged valves and fittings.Reference to welding-end valves was not included,because a separate standard for them was.Bolt length calculationsbasedonworstcasetolerancesledtoarevisionoftabulatedlengths.Testingofvalvessubsequentlypublished by SC 15 closure members was added to the test requirements.Following final approvalon October 23,the Standard was published as ANSI B16.5-1973.Subcommittee N(formerly 15)was assigned responsibility for all valve standards in late 1973.Subcommittee C(formerly 3)continues to have responsibility for flange standards.A revisionwas accordingly initiated to remove all references to valves.At the same time,comments fromusers and changes in the ASME Boiler and Pressure Vessel Code led to significant revisions inthe Class 150 rating basis and in the ratings of stainless steel and certain alloy steel flanges andflanged fittings in all rating classes.Extensive public review comments led to the addition ofconsiderations for bolting and gaskets for flanged joints and of marking requirements.To avoidfrequent and confusing changes in ratings as further changes in Code allowable stresses are made,it was agreed with Subcommittee N to leave ratings alone unless the relevant Code stress valuesare changed by more than 10%.After final approval by the Standards Committee,cosponsors,and ANSI,ANSI B16.5-1977,Steel Pipe Flanges and Flanged Fittings,was published on June16,1977.In 1979,work began on another new edition.Materials coverage was expanded by the additionof nickel and nickel alloys.Bolting rules were revised to cover nickel alloy bolts.Bolt hole andbolting were changed to provide interchangeability between inch and metric dimensions.Metricdimensional tables were made informational rather than alternative requirements of the Standard.Final approval was granted for ANSI B16.5-1984,Pipe Flanges and Flanged Fittings on August 14.In 1982,American National Standards Committee B16 was reorganized as an ASME Committeeoperating under procedures accredited by ANSI.The 1988 edition of the Standard extendednickel alloy ratings to higher temperatures,clarifying flat face flange requirements,and includedother minor revisions.The Committee determined that any metric standard for flanges will standalone,with metric bolting and gaskets;hence,metric equivalents have been deleted.Followingapproval by the Standard Committee and ASME,approval as an American National Standardwas given by ANSI on April 7,1988,with the new designation