1、Designation: A 74 08Endorsed 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 () 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 14Y branches, combination18 bends, double 14TablesSanitary 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:2A 48/A 48M Specification for Gray Iron CastingsA 644 Terminology Relating to Iron CastingsD 1248 Specification for Polyethylene Plasti
11、cs 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;1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is t
12、he direct responsibility of Subcommittee A04.12 on Pipes andTubes.Current edition approved May 1, 2008. Published June 2008. Originallyapproved in 1917. Last previous edition approved in 2006 as A 74 06.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Ser
13、vice 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 Box C700, West Conshohocken, PA 19428-2959, United States.Melting and Pouring; and Cleaning and Finis
14、hing2.2 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 Standard:3.2 manufacturer, nthe entity that casts the
15、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 shall meet allapplicable requirements and tests given in th
16、is 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 644 andincludes gray iron as well as ductile iron. The c
17、astings 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 they are intended.4.3 To minimize the possibility of i
18、ntroducing 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 instructions. Written operating andmaintenance procedures for the
19、 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 products covered by this specifi-cation.4.5 Analysis o
20、f 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 States shall comply to all local, state, andnational safety laws and regulations and to the requirements ofE 2349.4.7 Foundrie
21、s 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.4.8 Pipe and fittings shall not be patched, filled, or welded tocorrect cosmetic or material defects that occur during th
22、ecourse 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 andfittings. Tension test specimens shall be employed. The manu-facturer shall main
23、tain 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 include breaking load of testbars, machined diameter of test bar, and calculated tensilestrength.5.1.3 Analysis of cas
24、tings 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 chemical constituents of the gray iron used in themanufacture of gray iron soil pipe and
25、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 conform to the following requirements as tochemical composition:Phosphorous (P) 0.3
26、8 % 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 iron = %C+%Si/3+%P/36.1.1 Chemical tests shall be performed at the time ofproducti
27、on 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:7.1.1 Single-hub pipe shall have a hub at one end and aspigot at the other. Doubl
28、e-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 barrelshall be cast in one piece (see Fig. 1).7.1.2 Single-hub pipe shall be of 21
29、2-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 pipe shall be of the same overall length assingle-hub pipe of the same size. Its lay
30、ing 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 Table 2. The dimensions shall apply topipe before any coating is appli
31、ed.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 sizes3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelph
32、ia, 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.A740824 in. (102 mm) and larger, and shall not exceed516 in. (7.9 mm)for smaller sizes; for 10-ft lengths, deflections in the ba
33、rrelshall 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 spigot ends in Table 1 andTable 2, as applicable. Fittings of the patterns specified
34、 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 thickness throughout,and to dimension R8, Tables 15-17, for the minim
35、um 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 apply to fittings before anycoating is applied.NOTE 1Such as, for examp
36、le, 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 (50)3 to 6 (75 to 150), incl 212 (64)8 to 12 (200 to 300), incl 3 (75
37、)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 openings shallconform to 7.2.4. It is permissible to increase the wallt
38、hickness 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, and shall notextend more than 414 in. from the plain end. The incr
39、easedthickness 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 infittings shall have American Standard taper pipe threads. Thethre
40、ads 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 thread, and theentering end of external threads shall be similarly c
41、hamferedapproximately 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. Methods of Specifying Fittings8.1 Method of Specifying Sizes of Fitti
42、ngs 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 of inlet or run (Note 2),8.1.2.2 Size of outlet or offset distance
43、,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 Fittings with Side Inletsand OutletsWhen placed in the position described
44、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 the hub.8.2.2 Branch FittingsPlace the branch toward the ob-server an
45、d 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 openings on the sideopposite to that shown. For details of side inle
46、ts, 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 MSDS reportable levels. Materialsafety data sheets shall be furnish
47、ed 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 intervals for adequate determinationsof the significant chemical co
48、nstituents 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 to this standard. Records of chemicalanalysis shall be maintained b
49、y 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 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.
