1、Designation: F512 06 F512 12 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 of
2、 originaladoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This specification covers the requirements for singl
3、e wall and coextruded cellular core smooth-wall poly(vinyl chloride)conduit and fittings for underground communication and electrical power wire and cables. Plastics which does not meet thematerial requirements specified in Section 5 is excluded from single layer and all coextruded layers.1.2 The va
4、lues given in parentheses are for information only.1.3 The following safety hazards caveat pertains only to the test method portion, Section 8, of this specification:This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the
5、user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD1600 Terminology for Abbreviated Terms Relating to PlasticsD
6、1784 Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC)CompoundsD2122 Test Method for Determining Dimensions of Thermoplastic Pipe and FittingsD2152 Test Method for Adequacy of Fusion of Extruded Poly(Vinyl Chloride) (PVC) Pipe and Molded Fitting
7、s by AcetoneImmersionD2412 Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate LoadingD2444 Test Method for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (FallingWeight)D2466 Specification for Poly(Vinyl Ch
8、loride) (PVC) Plastic Pipe Fittings, Schedule 40D2564 Specification for Solvent Cements for Poly(Vinyl Chloride) (PVC) Plastic Piping SystemsD2855 Practice for Making Solvent-Cemented Joints with Poly(Vinyl Chloride) (PVC) Pipe and FittingsF412 Terminology Relating to Plastic Piping Systems3. Termin
9、ology3.1 Definitions are in accordance with Terminology F412 and abbreviations are in accordance with Terminology D1600, unlessotherwise specified. The abbreviation for poly(vinyl chloride) is PVC.3.2 Definitions of Terms Specific to This Standard:3.2.1 cellular plastica plastic containing numerous
10、cells, intentionally introduced, interconnecting or not, distributedthroughout the mass.3.2.2 coextruded pipepipe consisting of two or more concentric layers of material bonded together in processing by anycombination of temperature, pressure, grafting, cross-linking or adhesion.1 This specification
11、 is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.25 on Vinyl BasedPipe.Current edition approved May 1, 2006Aug. 1, 2012. Published June 2006September 2012. Originally approved in 1977. Last previous edition approved in 20
12、012006 asF512 95F512(2001)06. 1. DOI: 10.1520/F0512-06.10.1520/F0512-12.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the
13、 ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users con
14、sult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken
15、, PA 19428-2959. United States13.2.3 coextrusiona process whereby two or more heated or unheated plastic material streams, forced through one or moreshaping orifice(s), become one continuously formed piece.3.2.4 external recycled materialindustrial rework generated by a different company manufacturi
16、ng to this specification.Composition is known by the industrial source of the material.3.2.5 post-consumer recycled materialfinished goods that have been purchased by the public, then returned to industry andreprocessed into raw materials. Identity of finished goods is known by the reprocessing comp
17、any.3.2.6 certificate of compositiona certificate describing the certain properties of an external recycled material of a postconsumer recycled material.3.2.7 composition disclosurea document describing the formulation of an external recycled material.4. Classification4.1 This specification covers f
18、ive types of underground conduit. There are two having lesser pipe stiffness values, designedprimarily for concrete encased burial (EB), and three with greater pipe stiffness values, designed primarily for direct burial (DB).The complete designations follow:Type EB-20 Designed to be encased in concr
19、ete.Type EB-35 Designed to be encased in concrete.Type DB-60 Designed for direct burial without encasement in concrete.Type DB-100 Designed for direct burial without encasement in concrete.Type DB-120 Designed for direct burial without encasement in concrete.4.2 This specification covers conduit wit
20、h integral bells, or with either separate or attached couplings.4.3 This specification covers molded and fabricated fittings intended for use with all types of conduit.5. Materials5.1 Basic MaterialsThe conduit shall be made of virgin homopolymer PVC compound having a cell classification of 12254,12
21、1643 (with a minimum tensile strength of 4000 psi (28 MPa), or 12264(with a minimum tensile modulus of 500 000 psi) asdefined in Specification D1784. Molded fittings shall be made from PVC compound having a cell classification of 12234 or 13343as defined in Specification D1784. Homopolymer PVC compo
22、unds must equal or exceed the requirements of the listed cellclassification numbers.5.2 Rework MaterialsRework material from the manufacturers own conduit or fittings production may be used by the samemanufacturer, provided that the conduit or fittings produced meet all of the requirements of this s
23、pecification. Rework materialfrom the manufactures coextruded cellular core conduit shall be used in the core if it contains any residual blowing agent. Thepipe produced shall meet all of the requirements of this specification.5.3 Recycled PVC MaterialsRecycled PVC materials conforming to the cell c
24、lassification of this specification may be usedprovided they are clean and free from foreign materials and provided that the conduit or fittings produced meet all requirementsof this specification.5.4 Solvent CementThe solvent cement shall meet the requirements of Specification D2564.6. Requirements
25、6.1 WorkmanshipThe conduit and fittings shall be homogeneous throughout, and free from visible cracks, holes, foreigninclusions, or other injurious defects. The conduit and fittings shall be as uniform as is commercially practical in color, opacity,density, and other physical properties.6.2 Dimensio
26、ns:6.2.1 Dimensions shall be determined in accordance with Test Method D2122.6.2.2 The dimensions and tolerances of the conduit shall be as specified in Table 1.6.2.3 LengthsConduit shall be supplied in lengths of 20 or 25 ft, or as otherwise agreed upon between the purchaser and theseller. A length
27、 shall be considered to be the overall length of the conduit, including integral bell, or coupling if attached, unlessotherwise specified. Tolerance on length shall be 61 in. (625 mm).6.2.4 Integral Bell Dimensions:6.2.4.1 Two systems of fit for integral bells are in common use. Unless otherwise spe
28、cified, the manufacturer may employ eitherof them.6.2.4.2 Interference Fit SystemThe dimensions and tolerances listed in Columns A and B of Table 1 in Specification D2466provide a satisfactory interference fit system between pipe and socket.6.2.4.3 Clearance Fit SystemThe dimensions and tolerances l
29、isted in Table 2 of this specification provide a satisfactoryclearance fit system.3 Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:F17-1002.F512 1226.2.5 The wall thickness of integral bells and sweeps shall be considered satis
30、factory if formed from conduit which meets theminimum requirements of this specification.6.2.6 Socket depths for integral bells shall conform to the requirements listed in Table 2.6.2.7 Integral belled ends shall be centered to provide a visible shoulder around the entire circumference.6.2.8 The ins
31、ide diameters of spigot ends shall be chamfered as shown in Fig. 1.6.2.9 Fittings and Sweep Dimensions:6.2.9.1 The dimensions and types of conduit fittings shall be as specified in Tables 3-17.6.2.9.2 Conduit fittings shall be capable of passing a ball 14 in. (6 mm) less in diameter than the nominal
32、 size of the conduit.6.2.9.3 The dimensions of sweeps and bends shall be as specified in Table 17. Sweeps and bends shall be made from DB-60or DB-120 conduit. Sweeps made from DB-60 conduit are intended for use with EB-20 and DB-60 conduit. Sweeps made fromDB-120 conduit are intended for use with EB
33、-35 and DB-120 conduit.6.3 Minimum Pipe Stiffness:6.3.1 The minimum pipe stiffness ( F/Dy) values for conduit shall be in conformance with Table 18, when tested in accordancewith 8.3. Three specimens shall be tested, all shall meet the requirements.6.3.2 Referee TestThe minimum pipe stiffness (F/Dy)
34、 values shall be in accordance with Table 18 when tested in accordancewith Test Method D2412 at 5 % deflection.6.4 Impact StrengthThe minimum drop weight impact strength values for conduit shall be as listed in Table 19, when testedin accordance with 8.1.TABLE 1 Conduit Dimensions and Tolerances, in
35、.NominalSizeAverageOutsideDiameterTolerance on Minimum Wall ThicknessAAverage Out-ofRoundB Minimum Modulus 400 000 psi Minimum Modulus 500 000 psiEB-20 EB-35 DB-60 DB-100 DB-120 EB-20 EB-35 DB-60 DB-100 DB-1201 1.315 0.005 0.060 0.060 0.060112 1.900 0.006 0.060 0.060 0.065 0.0602 2.375 0.006 0.060 0
36、.060 0.065 0.083 0.060 0.060 0.0773 3.500 0.008 0.060 0.067 0.082 0.100 0.121 0.127 0.061 0.076 0.092 0.112 0.118312 4.000 0.008 0.100 0.078 0.095 0.115 0.138 0.147 0.072 0.088 0.107 0.128 0.1364 4.500 0.009 0.100 0.089 0.109 0.131 0.155 0.166 0.082 0.100 0.121 0.145 0.1545 5.563 0.010 0.100 0.112 0
37、.136 0.164 0.192 0.205 0.103 0.126 0.152 0.179 0.1916 6.625 0.011 0.100 0.135 0.164 0.196 0.229 0.244 0.125 0.152 0.182 0.213 0.227A Tolerance on wall thickness is +12, 0 % or +0.030, 0.000 in. whichever is greater.B “Out-of-round” is defined as maximum diameter minus minimum diameter.TABLE 2 Belled
38、 End Dimensions (Clearance Fit System), in.NominalSizeAverageEntranceDiameterAverageBottomDiameterToleranceonDiametersOut-ofRoundToleranceASocket Depthmin max1 1.331 1.320 0.005 0.060 1.000 1.750112 1.921 1.906 0.006 0.060 1.375 2.1252 2.400 2.381 0.006 0.060 1.750 2.5003 3.538 3.508 0.008 0.060 2.8
39、75 3.625312 4.041 4.008 0.008 0.100 3.125 3.8754 4.544 4.509 0.009 0.100 3.375 4.1255 5.614 5.573 0.010 0.100 4.000 4.7506 6.687 6.636 0.011 0.100 5.000 5.750A “Out-of-round” is defined as maximum diameter minus minimum diameter.FIG. 1 Chamfer DetailF512 1236.4.1 The impact test is a quality control
40、 test, to be performed at the time of manufacture.6.5 Joint Tightness (Referee Test)The joints shall not leak when tested in accordance with 8.2.TABLE 3 Types of Conduit Fittings1. Couplings2. Domed caps3. Flat caps4. Fittings plugs5. Tapered plugs6. Bends (5, 2212, 30, 45, and 90)7. Sweeps (5, 2212
41、, 30, 45, and 90)8. Angle Couplings (5)9. Fiber conduit adapters10. Cement-asbestos conduit adapters11. Water-tight expansion couplings12. Spigot-ended reducers13. Socket end-bellsTABLE 4 Fittings Socket Dimensions, in.NOTE 1Thermoformed fittings may employ the dimensions listed inTable 4, or the di
42、mensions listed in Table 2 for integral bell ends.NominalSizeDimension AAverageEntranceDiameterDimension BAverageBottomDiameterToleranceonDiametersOut-of-RoundToleranceDimension CMinimumSocketDepth2 2.393 2.369 0.006 0.012 1.1253 3.515 3.492 0.008 0.015 1.594312 4.015 3.992 0.008 0.015 1.6874 4.515
43、4.491 0.009 0.015 1.7505 5.593 5.553 0.010 0.030 1.9376 6.658 6.614 0.011 0.030 2.125TABLE 5 Coupling Dimensions, in.Nominal Size M, max SH, max N, min1 11364 0.070 116112 2932 0.070 1162 24764 0.075 3323 33132 0.076 764312 412 0.087 7644 5132 0.097 7645 614 0.118 9646 712 0.140 964F512 1246.6 Extru
44、sion QualityThe conduit shall not flake or disintegrate when tested in accordance with Test Method D2152.6.7 BondFor pipe produced by the coextrusion process, that is , pipe containing two or more concentric layers, the bondbetween the layers shall be strong and uniform. It shall not be possible to
45、separate any two layers with a probe or point of a knifeblade so that the layers separatecleanly so the probe or knife blade moves freely between the layers. Nor shall separation of bondoccur between layers during testing performed under the requirements of this specification.7. Conditioning7.1 Refe
46、ree TestingWhen conditioning is required for referee tests, condition the specimens in accordance with Procedure Ain Methods D618 at 23 6 2C and 50 6 5 % relative humidity for not less than 40 h prior to test. Conduct tests under the sameconditions of temperature and humidity, unless otherwise speci
47、fied.7.2 Quality Control:7.2.1 For quality control tests, condition specimens for a minimum of 3 h in air, or 1 h in liquid at 23 6 2C (70 to 77F). Testthe specimens at 23 6 2C without regard to relative humidity.7.2.2 For the impact test, condition specimens for at least 30 min at 0 to 1.6C (32 to
48、35F).TABLE 6 5 Angle Couplings, in.Nominal Size M, max N, min X and Tolerance Y, min Bend R2 2916 1.50 2.375 0.006 2.62 303 32332 1.55 3.500 0.008 3.14 364 45164 1.39 4.500 0.009 3.14 365 55964 2.25 5.563 0.010 4.19 486 7164 3.12 6.625 0.011 5.24 60TABLE 7 Domed Cap Dimensions, in.Nominal Size W, ma
49、x M, max2 2332 213163 3 4332312 318 4584 33164 513645 42764 6146 5732 72564F512 1258. Test Methods8.1 Impact ResistanceTest and evaluate five specimens, each 6 6 116 in. (150 6 2 mm) long, in accordance with Test MethodD2444, using a 20-lb Tup B, and the flat plate (Holder B). When testing is performed at temperatures above 0C, no more thanTABLE 8 Flat Cap Dimensions, in.Nominal Size F, min M, max2 1932 235643 1
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