1、Designation: F2855 11An American National StandardStandard 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 in
2、dicates the year oforiginal adoption 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. Scope1.1 This specification covers a Chlorinated
3、Poly(VinylChloride)/Aluminum/Chlorinated Poly(Vinyl Chloride),(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 f
4、or the composite tubing, the requirements andtest 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 t
5、his specification are intended for use in residentialand commercial, hot and cold, potable water distributionsystems.NOTE 1The text of this standard references notes and footnotes whichprovide explanatory material. These notes and footnotes (excluding thosein tables and figures) shall not be conside
6、red as requirements of thestandard.1.2 This specification 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 us
7、e with com-posite tubing meeting the requirements of this specification aregiven in Annex A1.NOTE 2In 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
8、 into the cut ends of the CPVC-AL-CPVC tubing prior to makingsolvent 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 t
9、o be used with fittings and solvent cements meetingthe requirements 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 t
10、he tubing materials. Due toinherent hazards associated with testing 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 pneum
11、atic testing.NOTE 3Pressurized (compressed) air or other compressed 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 mathema
12、ticalconversions to SI units that are provided for information onlyand are not considered standard.NOTE 4Suggested 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 st
13、andard does not purportto address all of the safety concerns, if any, associated 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 A
14、STM Standards:2D696 Test Method for Coefficient of Linear Thermal Ex-pansion of Plastics Between 30C and 30C with aVitreous Silica DilatometerD1600 Terminology for Abbreviated Terms Relating toPlasticsD1784 Specification for Rigid Poly(Vinyl Chloride) (PVC)Compounds and Chlorinated Poly(Vinyl Chlori
15、de)1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.61 on Water.Current edition approved Feb. 1, 2011. Published February 2011. DOI: 10.1520/F285511.2For referenced ASTM standards, visit the ASTM website
16、, 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
17、(CPVC) CompoundsD1898 Practice for Sampling of PlasticsD2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD2837 Test Method for Obtaining Hydrostatic Design Basisfor Thermoplastic Pipe Materials or Pressure Design Basisfor Thermoplastic Pipe ProductsD2846/D2846M Specific
18、ation for Chlorinated Poly(VinylChloride) (CPVC) Plastic Hot- and Cold-Water Distribu-tion SystemsD3167 Test Method for Floating Roller Peel Resistance ofAdhesivesE8/E8M Test Methods for Tension Testing of MetallicMaterialsF412 Terminology Relating to Plastic Piping SystemsF1281 Specification for Cr
19、osslinked Polyethylene/Aluminum/Crosslinked Polyethylene (PEX-AL-PEX)Pressure Pipe2.2 Federal Standards:3Fed. Std. No. 123 Marking for Shipments (Civil Agencies)2.3 Military Standards:3MIL-STD-129 Marking for Shipment and Storage2.4 NSF Standards:4Standard No. 14 for Plastic Piping Components and Re
20、latedMaterialsStandard No. 61 for Drinking Water SystemsComponentsHealth Effects3. Terminology3.1 Definitions:3.1.1 GeneralDefinitions used in this specification are inaccordance with Terminology F412 and abbreviations are inaccordance with Terminology D1600, unless otherwise speci-fied. The abbrevi
21、ation for Aluminum is AL.3.2 Definitions of Terms Specific to This Standard:3.2.1 CPVC-AL-CPVC composite tubing, ncompositetubing produced by coextrusion or extrusion of layers ofCPVC/Aluminum/CPVC bonded together with a melt adhe-sive. This construction is also known as “multilayer”.3.2.2 tubing, n
22、,For the purpose of this specification, pipemade the specific dimensions shown in Table 1.3.2.3 nominal tubing size (NTS), nA non-dimensionaltubing sizing convention based on copper tubing sizing, CTS,dimensions in which the nominal measured OD is the NTS sizeplus 0.125 in. For example, NTS12 tubing
23、 has a nominal ODof 0.625 in.4. Classification4.1 TubingThis specification classifies CPVC-AL-CPVCcomposite tubing and CPVC bushings by a maximum continu-ous operating condition of 100 psi (690 kPa) at 180F (82C)and by nominal tubing sizes of12 NTS ,34 NTS and 1 NTS.4.2 Pressure Design Basis The CPV
24、C-AL-CPVC compos-ite tubing shall have an established pressure design basis at73F (23C) of 800 psi (5.52 MPa) or greater and at 180F(82C) of 200 psi (1.38 MPa) or greater in accordance withTest Method D2837.5. Materials5.1 GeneralThe CPVC-AL-CPVC composite tubing iscomposed of an internal CPVC layer
25、, adhesive layer, alumi-num layer, adhesive layer and external CPVC layer. For tubingmade to this specification, the constituent materials must meetthe following requirements:5.2 AluminumThe thickness of the aluminum layer shallmeet the dimensions and tolerance given in Table 1. The tensilepropertie
26、s of the aluminum material shall be a minimum tensilestrength of 14,600 psi (100 MPa) and an elongation of 20%when tested in accordance with Test Method E8/E8M.5.3 AdhesiveThe adhesive that bonds the CPVC layers tothe Aluminum layer shall be of sufficient strength that nodebonding of the layers occu
27、rs when the CPVC-AL-CPVCcomposite tubing is tested to all the requirements in Section 6of this standard and to the requirements for Hydrostatic BurstStrength and CPVC Adhesives as specified in SpecificationD2846/D2846M.5.4 CPVCThe CPVC compound used to make the innerand outer layers shall meet the r
28、equirements specified in 5.4.1and 5.4.2.5.4.1 Short-Term Properties The CPVC compound shallmeet the requirements of cell classification CPVC 23447 asspecified in Specification D1784.5.4.2 Long-Term Hydrostatic StrengthThe CPVC com-pound shall have an established 180F (82C) hydrostaticdesign stress o
29、f 500 psi (3.45 MPa) or greater in accordancewith Test Method D2837.5.5 Rework Material Rework material generated fromCPVC-AL-CPVC composite tubing shall not be used.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/
30、dodssp.daps.dla.mil.4Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140, http:/www.nsf.org.TABLE 1 Outside Diameters, Wall Thicknesses, and Tolerances for CPVC-AL-CPVC Composite PipeNTSOutside Diameter, in. (mm) Inside Diameter, in. (mm) Wall Thickness, in
31、. (mm)AverageTolerance onAverageAverageTolerance onAverageAluminum Inner CPVC Layer Outer CPVC LayerAverage Tolerance onAverageMinimum Minimum12 0.625(15.88)60.003(0.08)0.448(11.38)60.003(0.08)0.017(0.43)60.002(0.05)0.025(0.64)0.025(0.64)34 0.875(22.23)60.003(0.08)0.691(17.55)60.004(0.10)0.017(0.43)
32、60.002(0.05)0.028(0.71)0.028(0.71)1 1.125(28.58)60.003(0.08)0.932(23.67)60.005(0.13)0.017(0.43)60.002(0.05)0.034(0.86)0.034(0.86)F2855 1126. Requirements6.1 GeneralThe requirements and test methods in thisspecification cover CPVC-AL-CPVC composite tubing. Testson the individual layers that comprise
33、this composite tubing areoutside the scope of this specification. The raw materials used,however, must conform to the requirements as set out inSection 5.6.2 Dimensions and Tolerance of Tubing:6.2.1 Tubing Diameter The minimum outside diameterand tolerances of the tubing shall meet the requirements
34、givenin Table 1, when measured in accordance Test Method D2122.Maximum and minimum (out-of-roundness) tolerances applyonly to measurements made on tubing prior to coiling.6.2.2 Tubing Wall Thickness:6.2.2.1 Overall Tubing Wall ThicknessThe overall tubewall thickness shall meet the requirements given
35、 in Table 1,when measured in accordance with Test Method D2122. Theminimum wall thickness at any point of measurement of thetube shall not be less than the value specified in Table 1.6.2.2.2 CPVC Layer Wall ThicknessThe minimum wallthickness at any point of measurement of the tube shall not beless t
36、han the value specified in Table 1.NOTE 5An optical comparator has been found to be an excellentmethod for measuring the wall thickness of the various layers in piping. Aring is cut from the tubing and placed on the optical comparator formeasurement determination.6.2.3 Tubing LengthThe tubing shall
37、be supplied coiled orin straight lengths as agreed upon with the purchaser and withan allowable tolerance of +1 / -0 ft (+305 / -0 mm) for coils and+1/2 / -0 in. (+13 / -0 mm) for straight lengths.6.3 DelaminationCPVC-AL-CPVC tubing shall not showany separation of the CPVC layer from either side of
38、thealuminum layer when tested in accordance with 9.2.6.4 Ring Peel StrengthThe adhesive test of the CPVClayer to the aluminum is carried out by a ring peel strength test.The adhesive strength when bonding CPVC toAluminum shallmeet the specification given in Table 2 when tested in accor-dance with Te
39、st Method D3167.6.5 Apparent Tensile Strength of TubingThe tube rings,when tested in accordance with the Ring Test Method of TestMethod F1281, shall meet the minimum strength as specifiedin Table 3.6.6 Hydrostatic Sustained PressureCPVC-AL-CPVCtubing shall meet the minimum hydrostatic sustained pres
40、surerequirements of both test conditions shown in Table 4 whentested in accordance with the Hydrostatic Sustained PressureMethod of Specification D2846/D2846M.6.7 Requirements for the, installation required, CPVC bush-ings are in mandatory Annex A1.7. Requirements for Joints made with Solvent Cement
41、7.1 CPVC-AL-CPVC joints made with solvent cement shallmeet the Requirements for Solvent Cement and AdhesiveJoints of Specification D2846/D2846M as specified for:7.1.1 Hydrostatic Burst Strength7.1.1.1 The specimen size for the Hydrostatic BurstStrength shall be 1 NTS.7.1.2 Hydrostatic Sustained Pres
42、sure Strength7.1.3 Thermocycling7.2 Special requirements for joining CPVC-AL-CPVC tub-ing are contained in mandatory Annex A1.8. Workmanship, Finish and Appearance8.1 WorkmanshipThe composite tubing and associatedbushings shall be homogeneous throughout and free of visiblecracks, holes, foreign incl
43、usions, or other defects. The tubingand associated bushings shall be as uniform as commerciallypracticable in color, opacity, density, and other physical prop-erties.9. Test Methods for Tubing9.1 SamplingA sufficient quantity of composite tubing, asagreed upon between the purchaser and the seller, s
44、hall beselected from each lot or shipment and tested to determineconformance with this specification (see Practice D1898). Inthe case of no prior agreement, random samples selected by thetesting laboratory shall be deemed adequate.9.1.1 Test SpecimensNot less than 50 % of the testspecimens required
45、for any pressure test shall have at least apart of the marking in their central sections. The central sectionis that portion of tubing which is at least one tubing diameteraway from an end closure.9.2 Delamination TestCut two12 to 1 in. rings from thetubing to be tested. Using a band saw, slice each
46、 ringlengthwise into two approximately equal semicircular, arc-shaped specimens. The Slice on the second ring shall be at 90from the slice on the first ring so that each of the fourspecimens represents one quadrant of the circumference of thepipe. One specimen must have the print line at the center
47、of thearc. With pliers grasp the opposing ends of arc and bend backthe edges so that the outside edges of the arcs meet. When thebent specimen is visually inspected, failure is defined as anyseparation of the CPVC layer from either side of the aluminumlayer.TABLE 2 Minimum Ring Peel Strength-Average
48、 Value for Innerand Outer CPVC Layers lbs/in. (N/mm)NTS 23C(73.4F)60C(140F)82C(180F)12 40 (7.00) 20 (3.50) 15 (2.63)34 40 (7.00) 20 (3.50) 15 (2.63)1 40 (7.00) 20 (3.50) 15 (2.63)TABLE 3 Minimum Tube Strength N (lb)12 NTS 2300 (515)34 NTS 2500 (560)1 NTS 2500 (560)TABLE 4 Minimum Hydrostatic Sustain
49、ed PressureRequirements for CPVC-AL-CPVC Tubing Assemblies Tested inEither Water or Air Bath External Environment at 180F (82C)TestConditionTestDurationHydrostatic Test PressureWater Bath Air BathA 6 min 521 psi (3 590 kPa) 551 psi (3 800 kPa)B 4 h 364 psi (2 510 kPa) 403 psi (2 780 kPa)F2855 11310. Retest and Rejection10.1 If the results of any test(s) do not meet the require-ments of this specification, the tests(s) shall be conducted againonly by agreement between the purchaser and seller. Undersuch agreement, mini
