1、Designation:C117310(Reapproved 2014)Standard Specification forFlexible Transition Couplings for Underground PipingSystems1This standard is issued under the fixed designation C1173;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the y
2、ear of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification describes the properties of devices orassemblies suitable for use as flexible transition coupling
3、s,hereinafter referred to as couplings,for underground drainageand sewer piping systems.1.2 Couplings that may include bushings,inserts,or shearrings and conform to the requirements of this standard aresuitable for joining plain end pipe or fittings.The pipe to bejoined shall be of similar or dissim
4、ilar materials,size,or both.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The ASTM standards referenced herein shall be consid-e
5、red mandatory.1.5 The committee with jurisdiction over this standard is notaware of another comparable standard for materials covered inthis standard.2.Referenced Documents2.1 ASTM Standards:2A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate,Sheet,and Strip for Pressure
6、Vessels and for General ApplicationsA493 Specification for Stainless Steel Wire and Wire Rodsfor Cold Heading and Cold ForgingA644 Terminology Relating to Iron CastingsD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471
7、 Test Method for Rubber PropertyEffect of LiquidsD543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD638 Test Method for Te
8、nsile Properties of PlasticsD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD2240 Test Method for Rubber PropertyDurometer Hard-nessD3045 Practice for Heat Aging of Plastics Without LoadD6147 Test Method for Vulcanized Rubber and Thermoplas-tic ElastomerDetermina
9、tion of Force Decay(StressRelaxation)in Compression3.Terminology3.1 DefinitionsFor definitions of terms used in thisstandard,see Terminology A644.3.2 Definitions of Terms Specific to This Standard:3.2.1 center stop,nan integral part of the gasket centeredon its axial length intended to limit the ins
10、ertion depth of thepipe to be coupled.3.2.2 clamp assembly,nthat portion of the coupling ex-cluding the gasket.3.2.3 coupling,nthe complete assembly.3.2.4 fitting,nparts of a pipeline other than straight pipecouplings,or valves.3.2.5 flexible transition couplings,ndevices used to forma leakproof joi
11、nt between sections of plain end pipe or fittingsof the same or different materials,of the same or different size,or any combination of materials or pipe sizes.3.2.6 free torque,nthe torque value expressed inlbfin./Nm when the clamp is tightened four revolutions of thescrew nut;while in the free sta
12、te,this value does not includeany breakaway effects due to staking or passage of the bandends beyond the screw heads.3.2.7 inserts,na bushing or ring placed into the couplingsocket to accommodate pipe materials of differing outsidediameters.1This specification is under the jurisdiction of ASTM Commi
13、ttee A04 on IronCastings and is the direct responsibility of Subcommittee A04.75 on Gaskets andCoupling for Plumbing and Sewer Piping.Current edition approved Oct.1,2014.Published October 2014.Originallyapproved in 1991.Last previous edition approved in 2010 as C1173 10.DOI:10.1520/C1173-10R14.2For
14、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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Con
15、shohocken,PA 19428-2959.United States1 3.2.8 joint,nthe completed assembly of parts consistingof the flexible transition coupling and the joined pipes,orfittings,or both.3.2.9 lot,na specific quantity of similar material orcollection of similar units from a common source;the quantityoffered for insp
16、ection and acceptance at any one time.A lotmight comprise a shipment,batch,or similar quantity.3.2.10 manufacturer,nthe entity that produces the cou-pling.3.2.11 plain end pipe,nany pipe that does not include anybell,hub,threaded area,or other means of joining.3.2.12 shear ring,nan interior or exterior element whichis used to span the distance between the pipe ends within acoupling so as to provide increased resistance to axial displace-ment.4.Classification4.1 The couplings shall be permitted t
