1、Designation:C42504(Reapproved 2013)Standard Specification forCompression Joints for Vitrified Clay Pipe and Fittings1This standard is issued under the fixed designation C425;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、 last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This specification covers materials and t
3、est requirementsfor compression joints for vitrified clay pipe and fittings.SeeSpecification C700 for pipe specifications.The test require-ments are applicable to pipe joint assemblies prior to fieldinstallation of pipe.NOTE1Install pipe in accordance with Practice C12.1.2 The values stated in inch-
4、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.1.3 The following precautionary caveat pertains only to theTest Requirements portion,Section 7,of this standard.This
5、standard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 AS
6、TM Standards:2A167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate,Sheet,and StripA240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate,Sheet,and Strip for PressureVessels and for General ApplicationsC12 Practice for Installing Vitrified Clay Pipe
7、LinesC700 Specification for Vitrified Clay Pipe,Extra Strength,Standard Strength,and PerforatedC896 Terminology Relating to Clay ProductsD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber Propert
8、yEffect of LiquidsD518 Test Method for Rubber DeteriorationSurfaceCracking(Withdrawn 2007)3D543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD573 Test Method for RubberDeterioration in an AirOvenD583 Methods of Test for Water Resistance of TextileFabrics(Withdrawn 1971)3D11
9、49 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD1566 Terminology Relating to RubberD2240 Test Method for Rubber PropertyDurometer Hard-ness3.Terminology3.1 DefinitionsTerms relating to plastics and rubber shallbe as defined in Terminologies D583 and D1566,respectiv
10、ely.3.2 Terminology C896 can be used for clarification ofterminology in this specification.4.Principles of Joint Design4.1 Sealing elements shall be compressed between bearingsurfaces to assure watertight integrity as required in Section 7.4.2 Sealing elements shall either be bonded to bearingsurfac
11、es or be independent elements.5.Materials and Manufacture5.1 Rubber ring-sealing elements shall conform to therequirements of Table 1.5.2 Rubber for other than ring-sealing elements shall con-form to the requirements of Table 2.5.3 Plastic components shall conform to the requirements ofTable 3.5.4 M
12、etallic components shall be of corrosion-resistantmetal conforming to Specifications A167 and A240/A240M.1This specification is under the jurisdiction of ASTM Committee C04 onVitrified Clay Pipe and is the direct responsibility of Subcommittee C04.20 onMethods of Test and Specifications.Current edit
13、ion approved Dec.1,2013.Published December 2013.Originallyapproved in 1958.Last previous edition approved in 2009 as C425 04(2009).DOI:10.1520/C0425-04R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStan
14、dards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.5 If any of the
15、 test specimens fail to meet the chemicalresistance requirements,the manufacturer will be allowed aretest of two additional specimens,representative of theoriginal material tested,for each one that failed.The jointingmaterial will be acceptable if all retest specimens meet the testrequirements.5.6 J
16、oints complying with this standard are suitable for mostdomestic and commercial applications.However,attention iscalled to the fact that industrial effluents vary in content,concentration,duration of discharge and temperature;andspecific evaluations of joint performance in such environmentsare necessary.In those instances,consult the manufacturer.6.Joint Specimen Preparation6.1 When required,assembled joints representative of thepipe and joints to be used,shall be selected from the suppliersstoc
