ASTM A74-2006 Standard Specification for Cast Iron Soil Pipe and Fittings《铸铁污水管及配件的标准规范》.pdf

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1、Designation: A 74 06Endorsed by theCast Iron Soil Pipe InstituteAmerican Association StateHighway and Transportation Officials StandardAASHTO No.: M 263-77Standard Specification forCast Iron Soil Pipe and Fittings1This standard is issued under the fixed designationA 74; the number immediately follow

2、ing the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approv

3、ed for use by agencies of the Department of Defense.1. Scope1.1 This specification covers cast iron soil pipe and fittingsfor use in gravity flow plumbing, drain, waste and ventsanitary, and storm water applications. It establishes standardscovering material, manufacture, mechanical and chemicalprop

4、erties, coating, test methods, inspection, certification,product markings, dimensions, and dimensional tolerances forextra heavy and service cast iron soil pipe and fittings. Thesepipe and fittings are not intended for pressure applications asthe selection of the proper size for sanitary drain, wast

5、e, vent,and storm drain systems allows free air space for gravitydrainage.1.2 This specification covers pipe and fittings of the follow-ing patterns and, when so designated, shall apply to any otherpatterns that conform with the applicable requirements given inthis specification.1.2.1 Pipe:TablesExt

6、ra heavy, 212 ft (0.75 m), 312 ft (1.0 m), 5 ft(1.5 m), 10 ft (3.0 m) lengths1, 2Service, 212 ft (0.75 m), 312 ft (1.0 m), 5 ft (1.5m),10ft(3.0m)1, 2Outside dimensions (for detailing) X1.11.2.2 Fittings:Tables14 bends; long14 bends 3, 414 bends, long low-hub 514 bends, low heel; high heel 6, 714 ben

7、ds, short sweep; long sweep 814 bends, reducing long sweep 915 bends 1016 bends 1018 bends; long18 bends 11116 bends 11Y branches 12, 13Y branches, combination18 bends, single 14Y branches, combination18 bends, double 14Sanitary T branches, single 15TablesSanitary T branches, double 15Sanitary T bra

8、nches, cleanout 16Tapped sanitary T branches, single 17Tapped sanitary T branches, double 17T branches, single and double 18Tapped T branches, single 19Tapped T branches, double 19T branches, cleanout 20-45 offset fitting 21Double hubs 22Long double hubs 22Reducers 23Increasers 24, 25P traps 26, 27D

9、eep seal P traps 28Running traps 29Screw plugs (brass) 30Blind plugs 31Iron-body ferrules 32Side inlets Fig. 3Closet bends 33Tapping bosses 34Reducing14 bend SV 35Combination Y and18 bend 36H branch fitting 371.3 The values stated in inch-pound units are to be regardedas the standard. The values giv

10、en in parentheses are forinformation only. Metric conversions in Tables 1 and 2 are totwo decimal places; all other metric conversions are rounded tothe nearest whole number.2. Referenced Documents2.1 ASTM Standards:2A 48/A 48M Specification for Gray Iron CastingsA 644 Terminology Relating to Iron C

11、astingsD 1248 Specification for Polyethylene Plastics ExtrusionMaterials for Wire and CableE8 Test Methods for Tension Testing of Metallic MaterialsE 2349 Practice for Safety Requirements in Metal CastingOperations: Sand Preparation, Molding, and Core Making;Melting and Pouring; and Cleaning and Fin

12、ishing1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.12 on Pipes andTubes.Current edition approved Aug. 15, 2006. Published August 2006. Originallyapproved in 1917. Last previous edition approved in 2005 as A 7

13、4 05.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO

14、 Box C700, West Conshohocken, PA 19428-2959, United States.2.2 Federal Standard:3Fed. Std. No. 123 Marking for Shipment (Civil Agencies)2.3 Military Standard:3MIL-STD-129 Marking for Shipment and Storage2.4 ANSI/ASME Standard:4B1.20 Pipe Threads3. Terminology3.1 Definitions of Terms Specific to This

15、 Standard:3.2 manufacturer, nthe entity that casts the pipe andfittings covered by this standard.4. Materials and Manufacture4.1 The pipe and fittings shall be iron castings suitable forinstallation and service for sanitary, storm drain, waste, andvent piping applications. The pipe and fittings shal

16、l meet allapplicable requirements and tests given in this specification.4.2 The castings shall be made of cast iron, produced by anestablished commercial method that provides control overchemical and physical properties. Cast iron is a generic termfor a series of alloys as defined in Terminology A 6

17、44 andincludes gray iron as well as ductile iron. The castings shall besound, true to pattern, and of compact close grain that permitsdrilling and cutting by ordinary methods. The interior surfaceshall be reasonably smooth and free from defects that wouldmake the castings unfit for the use for which

18、 they are intended.4.3 To minimize the possibility of introducing radioactivematerial to a melting operation, ferrous scrap, pig iron, and anyrecycled ferrous material shall be screened for radioactivitywith suitable detection devices operated in accordance with thedetection manufacturers instructio

19、ns. Written operating andmaintenance procedures for the detection equipment shall beprovided to the purchaser for review when requested. Recordsshall be maintained by load of these tests for a period of sevenyears.4.4 Material that is found contaminated with radioactivityshall not be used to produce

20、 products covered by this specifi-cation.4.5 Analysis of castings after the time of production shallnot be used to determine compliance to this specification.4.6 In order to prevent the injury of workers it is recom-mended that foundries manufacturing to this standard adhere toASTM E 2349. This is a

21、 minimum requirement. Manufacturersshall also operate in accordance with all local, state, andnational regulations in the country of origin.5. Mechanical Properties5.1 Mechanical Tests for Gray IronThe manufacturershall perform tests to determine mechanical properties of thegray iron used in the man

22、ufacture of gray iron soil pipe andfittings. Tension test specimens shall be employed. The manu-facturer shall maintain a record of mechanical tests for aminimum of 7 years.5.1.1 Tensile Strength TestThe tensile strength shall benot less than 21 000 psi (145 MPa).5.1.2 Tension test reports shall inc

23、lude breaking load of testbars, machined diameter of test bar, and calculated tensilestrength.5.1.3 Analysis of castings or test bars after the time ofproduction shall not be used as evidence of compliance to thisspecification.6. Chemical Test for Gray Iron6.1 The manufacturer shall perform tests to

24、 determine thesignificant chemical constituents of the gray iron used in themanufacture of gray iron soil pipe and fittings. Analysis shallbe performed at the minimum of once per lot as defined in thisspecification. The manufacturer shall maintain a record ofchemical tests performed for a minimum of

25、 7 years. The testresults shall conform to the following requirements as tochemical composition:Phosphorous (P) 0.38 % MaximumSulfur (S) 0.15 % MaximumChromium (Cr) 0.50 % MaximumTitanium (Ti) 0.10 % MaximumAluminum (Al) 0.50 % MaximumLead (Pb) 0.015 % MaximumCarbon Equivalent 4.10 % Minimum by mass

26、Note: Carbon equivalent for gray iron = %C+%Si/3+%P/36.1.1 Chemical tests shall be performed at the time ofproduction of the castings covered by this specification.6.1.2 Analysis of castings after the time of production shallnot be used as evidence of compliance to this specification.7. Dimensions a

27、nd Permissible Variations7.1 Pipe:7.1.1 Single-hub pipe shall have a hub at one end and aspigot at the other. Double-hub pipe shall have a hub at eachend. Hubs shall have lead grooves. The inner end of hub shallbe either with or without a centering recess, all combinations ofwhich shall make a satis

28、factory leakproof joint. Hub and barrelshall be cast in one piece (see Fig. 1).7.1.2 Single-hub pipe shall be of 212-ft (0.75-m), 312-ft(1.00-m), 5-ft (1.5-m), and 10-ft (3.0-m) nominal layinglengths. The laying length shall be as shown in Table 1 andshall be within the tolerances on laying length s

29、pecified inTable 2. Double-hub pipe shall be of the same overall length assingle-hub pipe of the same size. Its laying length shall be 5 ftminus the two telescoping lengths (dimension Y), or 10 ftminus the telescoping length (dimension Y). Other dimensionsshall be as specified in Table 1 as applicab

30、le, and be within thetolerances specified in Table 2. The dimensions shall apply topipe before any coating is applied.7.1.3 Pipe shall be straight to the extent that any deflectionsin the barrel of a 212-ft (0.75-m), 312-ft (1.00-m), and 5-ft(1.5-m) length of pipe shall not exceed14 in. (6.4 mm) for

31、 sizes4 in. (102 mm) and larger, and shall not exceed516 in. (7.9 mm)for smaller sizes; for 10-ft lengths, deflections in the barrelshall not exceed12 in. (12.7 mm) for sizes 4 in. and larger, norexceed58 in. (15.9 mm) for smaller sizes.7.2 Fittings:7.2.1 Dimensions of FittingsAll fittings shall con

32、form tothe dimensions specified for hub and spigot ends in Table 1 and3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-50984Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 100

33、36.A74062Table 2, as applicable. Fittings of the patterns specified in thisspecification shall conform to the applicable dimensions inTables 3-37 inclusive, and to the tolerances in Table 2. Otherpatterns (Note 1) shall conform to Table 1, as applicable, forhub and spigot dimensions, and for wall th

34、ickness throughout,and to dimension R8, Tables 15-17, for the minimum radius ofany drainage inlets that such fittings shall be permitted toprovide. All fittings shall have spigot ends of sufficient lengthto provide adequate room for making joints. All dimensionsgiven in this specification shall appl

35、y to fittings before anycoating is applied.NOTE 1Such as, for example, fittings known in the trade as “spe-cials,” when designated as being in conformity with this specification.7.2.2 Water Seal and TrapsTraps shall have water seals asfollows:Trap Size, in. (mm)MinimumWater seal, in. (mm)2 (50) 2 (5

36、0)3 to 6 (75 to 150), incl 212 (64)8 to 12 (200 to 300), incl 3 (75)7.2.3 Ends of FittingsHubs shall have lead grooves. Theinner end of hub shall be permitted to be either with or withouta centering recess, all combinations of which shall enable theinstaller to make a satisfactory joint. Tapped open

37、ings shallconform to 7.2.4. It is permissible to increase the wallthickness on the inside surface of fittings having one or moreplain ends. The increased thickness shall not reduce theminimum B dimension in Table 1 in excess of 0.10 in. for sizes8 in. and smaller, and 0.15 in. for 10 in. and larger,

38、 and shall notextend more than 414 in. from the plain end. The increasedthickness shall be tapered and offer no obstruction to flow.Inside diameters complying with service or extra heavy insidediameters shall be permitted on 12 and 15-in. sizes only.7.2.4 Pipe ThreadsScrew plugs and tapped openings

39、infittings shall have American Standard taper pipe threads. Thethreads shall be in accordance with ANSI/ASME B1.20 of thecurrent issue.7.2.5 Internal threads shall be chamfered on the entering endapproximately to the major diameter of the thread, at an angleof approximately 45 with the axis of the t

40、hread, and theentering end of external threads shall be similarly chamferedapproximately to be minor diameter of the thread, for easyentrance in making a joint and for protection of the thread. Thechamfer shall be concentric with the thread and shall beincluded in measurements of thread length.8. Me

41、thods of Specifying Fittings8.1 Method of Specifying Sizes of Fittings of More than OneSizeThe sizes are designated by the order of listing, asfollows:8.1.1 Branch and tapped fittings:8.1.1.1 Size of run (Note 2), and8.1.1.2 Size of branch.8.1.2 Reducers, increasers, and offset fittings:8.1.2.1 Size

42、 of inlet or run (Note 2),8.1.2.2 Size of outlet or offset distance,8.1.2.3 Length, if supplied in more than one length.NOTE 2The run is that portion of the fitting that forms part of themain drain, waste, or vent line. The spigot end is ordinarily the outlet.8.2 Method of Specifying Hand of Fitting

43、s with Side Inletsand OutletsWhen placed in the position described below, ifthe side inlet or outlet appears on the right, it is a right-handfitting; if on the left, it is a left-hand fitting.8.2.1 Bends and OffsetsPlace the fitting with hub facingtoward the observer and the spigot end lower than th

44、e hub.8.2.2 Branch FittingsPlace the branch toward the ob-server and the spigot end lower than the hub.8.2.3 TrapsPlace in the position in which the trap isinstalled, with the hub toward the observer.8.2.4 The fittings shown in Fig. 2 have right-hand inlet orcleanout. Left-hand fittings have these o

45、penings on the sideopposite to that shown. For details of side inlets, see Fig. 2.9. Coating9.1 The pipe and fittings shall be uniformly coated with amaterial suitable for the purpose, that is adherent, not brittle,and without a tendency to scale. The coating shall not containasbestos above current

46、MSDS reportable levels. Materialsafety data sheets shall be furnished by the coating manufac-turer when requested. The coating shall be evenly andsmoothly applied to all surfaces except threaded openings.10. Sampling10.1 Chemical and mechanical tests shall be made regularlyand at sufficiently close

47、intervals for adequate determinationsof the significant chemical constituents and properties of thecast iron. A specimen taken from a finished product often doesnot produce the same results as a specimen formed by themethod used for sample preparation and is not acceptable forthe purpose of testing

48、to this standard. Records of chemicalanalysis shall be maintained by the manufacturer by lot. Copiesof these analyses shall be furnished to the purchaser whenrequested.10.2 A lot shall consist of one of the following:10.2.1 All the metal poured from a single heating in a batchtype furnace,10.2.2 All

49、 the metal from two or more batch type meltingfurnaces poured into a single ladle or a single casting.10.2.3 All the metal poured from a continuous meltingfurnace for a given period of time between changes in charge,processing conditions, aim-for chemistry, or 4 hours, which-ever is the shorter period.11. Test Methods11.1 Gray Iron:11.1.1 Tensile Strength TestTest bars shall be cast inaccordance with the requirements of Specification A 48/A 48M. See Fig. 3 (Tension Test Specimens) for the machinedtest bar dimensions and as cast test bar