1、Designation:F51212(Reapproved 2017)An American National StandardStandard Specification forSmooth-Wall Poly(Vinyl Chloride)(PVC)Conduit andFittings for Underground Installation1This standard is issued under the fixed designation F512;the number immediately following the designation indicates the year
2、 of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements for singlewall and coe
3、xtruded cellular core smooth-wall poly(vinylchloride)conduit and fittings for underground communicationand electrical power wire and cables.Plastics which does notmeet the material requirements specified in Section 5 isexcluded from single layer and all coextruded layers.1.2 The values given in pare
4、ntheses are for informationonly.1.3 The following safety hazards caveat pertains only to thetest method portion,Section 8,of this specification: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 e
5、stablish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelop
6、ment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1784 S
7、pecification for Rigid Poly(Vinyl Chloride)(PVC)Compounds and Chlorinated Poly(Vinyl Chloride)(CPVC)CompoundsD2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD2152 Test Method for Adequacy of Fusion of ExtrudedPoly(Vinyl Chloride)(PVC)Pipe and Molded Fittings byAcetone
8、 ImmersionD2412 Test Method for Determination of External LoadingCharacteristics of Plastic Pipe by Parallel-Plate LoadingD2444 Test Method for Determination of the Impact Resis-tance of Thermoplastic Pipe and Fittings by Means of aTup(Falling Weight)D2466 Specification for Poly(Vinyl Chloride)(PVC)
9、PlasticPipe Fittings,Schedule 40D2564 Specification for Solvent Cements for Poly(VinylChloride)(PVC)Plastic Piping SystemsD2855 Practice for the Two-Step(Primer and Solvent Ce-ment)Method of Joining Poly(Vinyl Chloride)(PVC)orChlorinated Poly(Vinyl Chloride)(CPVC)Pipe andPiping Components with Taper
10、ed SocketsF412 Terminology Relating to Plastic Piping Systems3.Terminology3.1 Definitions are in accordance with Terminology F412and abbreviations are in accordance with Terminology D1600,unless otherwise specified.The abbreviation for poly(vinylchloride)is PVC.3.2 Definitions of Terms Specific to T
11、his Standard:3.2.1 cellular plastica plastic containing numerous cells,intentionally introduced,interconnecting or not,distributedthroughout the mass.3.2.2 coextruded pipepipe consisting of two or moreconcentric layers of material bonded together in processing byany combination of temperature,pressu
12、re,grafting,cross-linking or adhesion.3.2.3 coextrusiona process whereby two or more heatedor unheated plastic material streams,forced through one ormore shaping orifice(s),become one continuously formedpiece.3.2.4 external recycled materialindustrial rework gener-ated by a different company manufac
13、turing to this specifica-tion.Composition is known by the industrial source of thematerial.3.2.5 post-consumer recycled materialfinished goods thathave been purchased by the public,then returned to industry1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems a
14、nd is the direct responsibility of Subcommittee F17.25 on VinylBased Pipe.Current edition approved April 1,2017.Published April 2017.Originallyapproved in 1977.Last previous edition approved in 2012 as F51212.DOI:10.1520/F0512-12R17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,
15、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 Conshohocken,PA 19428-2959.United StatesThis international standa
16、rd was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 and reprocessed into raw materials.Identity of finished goodsis known by the reprocessing company.3.2.6 certificate of compositiona certificate describing thecertain properties of an external recycled material
