1、Designation:F285512Standard Specification forChlorinated Poly(Vinyl Chloride)/Aluminum/ChlorinatedPoly(Vinyl Chloride)(CPVC-AL-CPVC)Composite PressureTubing1This standard is issued under the fixed designation F2855;the number immediately following the designation indicates the year oforiginal adopti
2、on or,in the case of revision,the year 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.Scope*1.1 This specification covers a Chlorinated Poly(VinylChloride)/Aluminum/Chlorinated
3、Poly(VinylChloride),(CPVC AL CPVC),composite pressure tubing with a weldedaluminum tube reinforcement between the inner and outerlayers.The inner and outer CPVC layers are bonded to thealuminum tube by a melt adhesive.Included is a system ofnomenclature for the composite tubing,the requirements andt
4、est methods for materials,the dimensions of the componentlayers and finished tubing,adhesion tests,hydrostatic burst andsustained pressure and thermocycling performance.Also givenare the requirements and methods of marking.The componentscovered by this specification are intended for use in residenti
5、aland commercial,hot and cold,potable water distributionsystems.NOTE1The text of this standard references notes and footnotes whichprovide explanatory material.These notes and footnotes(excluding thosein tables and figures)shall not be considered as requirements of thestandard.1.2 This specification
6、 covers only composite tubing incor-porating a continuously welded aluminum tube.Tubing con-sisting of metallic layers not continuously welded together areoutside the scope of this specification.1.3 Specifications for internal bushings for use with com-posite tubing meeting the requirements of this
7、specification aregiven in Annex A1.NOTE2In order to assure the expected life expectancy of CPVC-AL-CPVC composite tubing by preventing corrosion of the Aluminum,abushing meeting the requirements of Annex A1 is required to be solventcemented into the cut ends of the CPVC-AL-CPVC tubing prior to makin
8、gsolvent cement joints in the piping.This bushing seals off the cut ends ofthe tubing preventing any contact of the AL layer with any liquids beingtransported by the tubing.1.4 Tubing meeting the requirements of this standard aredesigned to be used with fittings and solvent cements meetingthe requir
9、ements of Specification D2846/D2846M when as-sembled in accordance with Appendix X3.1.5 The products covered by this specification are intendedfor use with the distribution of pressurized liquids only,whichare chemically compatible with the tubing materials.Due toinherent hazards associated with tes
10、ting components and sys-tems with compressed air or other compressed gases somemanufacturers do not allow pneumatic testing of their products.Consult with specific product manufacturers for their specifictesting procedures prior to pneumatic testing.NOTE3Pressurized(compressed)air or other compresse
11、d gasescontain large amounts of stored energy which present serious safetyhazards should a system fail for any reason.1.6 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 only
12、and are not considered standard.NOTE4Suggested hydrostatic design pressures and pressure ratingsfor tubing are listed in Appendix X1.1.7 The following safety hazards caveat pertains only to thetest method portion,Section 9.This standard does not purportto address all of the safety concerns,if any,as
13、sociated with itsuse.It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D696 Test Method for Coefficient of Linear Thermal Expan-si
14、on of Plastics Between 30C and 30C with a VitreousSilica DilatometerD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1784 Specification for Rigid Poly(Vinyl Chloride)(PVC)Compounds and Chlorinated Poly(Vinyl Chloride)1This specification is under the jurisdiction of ASTM Committee F17 on
15、PlasticPiping Systems and is the direct responsibility of Subcommittee F17.61 on Water.Current edition approved April 1,2012.Published May 2012.Originallyapproved in 2011.Last previous edition approved in 2011 as F285511.DOI:10.1520/F285512.2For referenced ASTM standards,visit the ASTM website,www.a
16、stm.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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1(CPVC)CompoundsD1898 Practice for Sampling of Plastics(Withdrawn 1998)3D2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and Fittings
