ASTM A74-2008a Standard Specification for Cast Iron Soil Pipe and Fittings.pdf

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1、Designation: A 74 08aEndorsed 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 follo

2、wing 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 () 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 standard. The values given i

10、n parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A 48/A 48M Specification for Gray Iron CastingsA 644 Terminology Relating to Iron CastingsD 1248 Specification for Polyethylene Plast

11、ics ExtrusionMaterials for Wire and CableE8 Test Methods for Tension Testing of Metallic MaterialsE 1645 Practice for Preparation of Dried Paint Samples byHotplate or Microwave Digestion for Subsequent LeadAnalysisE 2349 Practice for Safety Requirements in Metal CastingOperations: Sand Preparation,

12、Molding, and Core Making;1This 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 Dec. 15, 2008. Published January 2009. Originallyapproved in 1917. Last previous edition app

13、roved in 2008 as A 74 08.2For 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 B

14、arr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Melting and Pouring; and Cleaning and Finishing2.2 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

15、Pipe Threads3. Terminology3.1 Definitions of Terms Specific to This 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 dr

16、ain, waste, andvent piping applications. The pipe and fittings shall 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

17、 a generic termfor a series of alloys as defined in Terminology A 644 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 f

18、rom defects that wouldmake the castings unfit for the use for which 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 device

19、s operated in accordance with thedetection manufacturers instructions. 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 i

20、s found contaminated with radioactivityshall not be used to produce 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 Foundries manufacturing products to this standardwithin the United Stat

21、es shall comply to all local, state, andnational safety laws and regulations and to the requirements ofE 2349.4.7 Foundries manufacturing products to this standard out-side the United States shall comply with all safety laws andregulations existing in the country where the products are beingproduced

22、.4.8 Pipe and fittings shall not be patched, filled, or welded tocorrect cosmetic or material defects that occur during thecourse of manufacturing.5. Mechanical Properties5.1 Mechanical Tests for Gray IronThe manufacturershall perform tests to determine mechanical properties of thegray iron used in

23、the manufacture 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 sh

24、all include 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 t

25、ests to 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 min

26、imum of 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

27、by massNote: 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. Dimen

28、sions and 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

29、a satisfactory 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 l

30、ength specified 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 a

31、pplicable, 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

32、mm) for sizes3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.A7408a

33、24 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 conform

34、tothe dimensions specified for hub and spigot ends in Table 1 andTable 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 a

35、pplicable, forhub and spigot dimensions, and for wall thickness 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 join

36、ts. All dimensionsgiven in this specification shall apply 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:T

37、rap Size, in. (mm)MinimumWater seal, in. (mm)2 (50) 2 (50)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 enabl

38、e theinstaller to make a satisfactory joint. Tapped openings 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 siz

39、es8 in. and smaller, and 0.15 in. for 10 in. and larger, 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

40、 only.7.2.4 Pipe ThreadsScrew plugs and tapped openings 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 threa

41、d, at an angleof approximately 45 with the axis of the thread, 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

42、 shall beincluded in measurements of thread length.8. Methods 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.

43、2 Reducers, increasers, and offset fittings:8.1.2.1 Size 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 ordina

44、rily the outlet.8.2 Method of Specifying Hand of Fittings 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 fa

45、cingtoward the observer and the spigot end lower than the 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 righ

46、t-hand inlet orcleanout. Left-hand fittings have these openings 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 sca

47、le. The coating shall not containasbestos above current 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.9.2 Pipe and fittings shall not be coate

48、d with paint contain-ing lead which exceeds levels above 0.06 % (600 ppm).9.3 The manufacturer shall annually prepare and submitsamples to a qualified laboratory for test in accordance withPractice E 16459.4 The manufacturer shall prepare and submit sampleswhen changing sources of supply or the coat

49、ing manufacturerchanges formulations for the coating.9.5 Records shall be maintained for a period of seven years.9.6 Copies of the coating test shall be furnished whenrequested.10. Sampling10.1 Chemical and mechanical tests shall be made regularlyand at sufficiently close 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 acce