1、Designation: A74 13a Endorsed 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 designationA74; 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 () indicates an editorial change since the last revision or reapproval.This standard has been approve
3、d 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 chemicalprope
4、rties, 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, waste
5、, 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:TablesExtr
6、a 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 bend
7、s, 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 14TablesY branches, combination18 bends, double 14Sanitary T branches, single 15Sanitary T branches, double 15Sanitary T bran
8、ches, 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, 27De
9、ep 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 in
10、 parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A48/A48M Specification for Gray Iron CastingsA644 Terminology Relating to Iron CastingsD1248 Specification for Polyethylene Plastics E
11、xtrusionMaterials for Wire and CableD3960 Practice for Determining Volatile Organic Compound(VOC) Content of Paints and Related CoatingsE8 Test Methods for Tension Testing of Metallic Materials1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct respo
12、nsibility of Subcommittee A04.12 on Pipes andTubes.Current edition approved June 1, 2013. Published June 2013. Originallyapproved in 1917. Last previous edition approved in 2013 as A74 13. DOI:10.1520/A0074-13A.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Cust
13、omer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1E1645 Practice for Preparation of Dr
14、ied Paint Samples byHotplate or Microwave Digestion for Subsequent LeadAnalysisE2349 Practice for Safety Requirements in Metal CastingOperations: Sand Preparation, Molding, and Core Mak-ing; Melting and Pouring; and Cleaning and Finishing2.2 Federal Standard:3Fed. Std. No. 123 Marking for Shipment (
15、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 Standard:3.1.1 manufacturer, nthe entity that casts the pipe andfittings covered by this standard.4. Materials and Manuf
16、acture4.1 The pipe and fittings shall be iron castings suitable forinstallation and service for sanitary, storm drain, waste, andvent piping applications. The pipe and fittings shall meet allapplicable requirements and tests given in this specification.4.2 The castings shall be made of cast iron, pr
17、oduced 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 A644 andincludes gray iron as well as ductile iron. The castings shall besound, true to pattern, and of compact close grai
18、n 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 they are intended.4.3 To minimize the possibility of introducing radioactivematerial to a melting operation, ferrous sc
19、rap, pig iron, and anyrecycled ferrous material shall be screened, by themanufacturer, for radioactivity with detection devices operatedin accordance with the detection manufacturers instructions.Written operating, calibration, and maintenance procedures forthe detection equipment shall be provided
20、to the purchaser forreview when requested. Records shall be maintained by load ofthese tests for a period of seven years.4.3.1 Only radiation devices designed specifically for thepurpose of screening ferrous material shipments shall be usedfor the purpose of conforming to this requirement. Hand held
21、radiation detectors (Geiger counters) are not appropriate andshall not be used for the purpose of conforming to thisrequirement.4.3.2 Material that is found contaminated with radioactivityshall not be used to produce products covered by this specifi-cation.4.3.3 Analysis of castings after the time o
22、f production shallnot be used to determine compliance to this specification.4.4 Foundries manufacturing products to this specificationshall comply to all local, provincial, state, and national safetylaws and regulations and to the requirements of PracticeE2349.4.5 Pipe and fittings shall not be patc
23、hed, 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 the manufacture of gray iron soil pipe a
24、ndfittings. 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 be notless than 21 000 psi (145 MPa).5.1.2 Tension test reports shall include breaking load of testbars, m
25、achined 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 determine thesignificant chemica
26、l 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 7 years. The testresults shall c
27、onform 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 massNote: Carbon equivalent for gray
28、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 and Permissible Variations7.1 Pipe
29、: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 satisfactory leakproof joint. Hub and
30、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 specified inTable 2. Double-hub pi
31、pe shall be of the same overall length as3Available 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 1003
32、6, http:/www.ansi.org.A74 13a2single-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 applicable, and be within thetolerances specified in
33、 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 sizes4 in. (102 mm) and larger, and shall n
34、ot 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 tothe dimensions specified for hub and
35、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 applicable, forhub and spigot dimensions
36、, and for wall thickness throughout,and to dimension R, 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 specific
37、ation shall apply to fittings before anycoating is applied.NOTE 1Such as, for example, fittings known in the trade as “specials,”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. (
38、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 enable theinstaller to make a satisfactory join
39、t. 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 sizes8 in. and smaller, and 0.15 in. for 10 i
40、n. 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 only.7.2.4 Pipe ThreadsScrew plugs and ta
41、pped 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 thread, at an angleof approximately 45 with the
42、 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 shall beincluded in measurements of threa
43、d 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.8.1.2 Reducers, increasers, and offset fitting
44、s: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 the maindrain, waste, or vent line. The spigot end is ordinarily the outlet.8.2 Method of Specifying H
45、and 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 facingtoward the observer and the spigot end
46、 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 right-hand inlet orcleanout. Left-hand fitting
47、s 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 scale. The coating shall not containFIG. 1 Si
48、ngle-Hub and Double-Hub Cast Iron Soil Pipe Laying LengthsA74 13a3TABLE 1 Dimensions of Hubs, Spigots, and Barrels for Extra-Heavy and Service Cast Iron Soil Pipe and Fittings, in.NOTE 11 in. = 25.4 mm; 1 ft = 0.3 m throughout tables.Service Cast Iron Soil Pipe:SizeAAvailabilityBInsideDiameterof Hub
49、BOutsideDiameterof BarrelCTelescopingLengthCInsideDiameterof BarrelCThicknessof BarrelCAJYBTNom Min2O 2.94 74.68 2.30 58.42 2.50 63.5 1.96 49.78 0.17 4.32 0.14 3.563O 3.94 100.08 3.30 83.82 2.75 69.85 2.96 75.18 0.17 4.32 0.14 3.564O 4.94 125.48 4.30 109.22 3.00 76.2 3.94 100.08 0.18 4.57 0.15 3.815O 5.94 150.88 5.30 134.62 3.00 76.2 4.94 125.48 0.18 4.57 0.15 3.816O 6.94 176.28 6.30 160.02 3.00 76.2 5.94 150.88 0.18 4.57 0.15 3.818O 9.25 234.95 8.38 212.85 3.50 88.
