1、Designation:C42504(Reapproved 2018)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 U.S.Department of Defense.1.Scope1.1 This specification covers materials a
3、nd test 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 i
4、nch-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.
5、Thisstandard 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,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.4 This int
6、ernational standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Co
7、mmittee.2.Referenced Documents2.1 ASTM Standards:2A167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate,Sheet,and Strip(With-drawn 2014)3A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate,Sheet,and Strip for PressureVessels and for General Applic
8、ationsC12 Practice for Installing Vitrified Clay Pipe 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-ti
9、c ElastomersTensionD471 Test Method for Rubber PropertyEffect 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
10、Water Resistance of TextileFabrics(Withdrawn 1971)3D1149 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 shallb
11、e as defined in Terminologies D583 and D1566,respectively.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 Se
12、aling elements shall either be bonded to bearingsurfaces 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 2.1This specificatio
13、n 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 edition approved Sept.1,2018.Published September 2018.Originallyapproved in 1958.Last previous edition approved in 2013 as C425
14、 04(2013).DOI:10.1520/C0425-04R18.2For 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.3The last approved version of th
15、is historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Dec
16、ision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 5.3 Plastic components shall conform to the requirements ofTable 3.5.4 Metallic components shall be of corrosion-resistantmetal conforming to Specifications A167 and A240/A240M.5.5 If any of the test specimens fail to meet the chemicalresistance requirements,the manufacturer will be allowed aretest of two additional specim
