1、Designation: D2683 101An American National StandardStandard Specification forSocket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing1This standard is issued under the fixed designation D2683; the number immediately following the designation indicates the year o
2、foriginal 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.This standard has been approved for use by agencies of the Department
3、of Defense.1NOTE6.2.2 was editorially corrected in March 2013.1. Scope*1.1 This specification covers polyethylene socket-type fit-tings for use with outside diameter-controlled polyethylenepipe as specified by Specifications D3035 and D2513. Require-ments for materials, workmanship, dimensions, and
4、pressureperformance are included. Where applicable in thisspecification, “ pipe” shall mean “pipe and tubing.”1.2 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 onlyand are
5、 not considered standard.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 est
6、ablish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD15
7、99 Test Method for Resistance to Short-Time HydraulicPressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD2513 Specification for Polyethylene (PE) Gas PressurePipe, T
8、ubing, and FittingsD2657 Practice for Heat Fusion Joining of Polyolefin Pipeand FittingsD3035 Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside DiameterD3350 Specification for Polyethylene Plastics Pipe and Fit-tings MaterialsF412 Terminology Relating to Plastic Pi
9、ping Systems2.2 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)32.3 Military Standard:MIL-STD-129 Marking for Shipment and Storage32.4 Plastic Pipe Institute4PPI TR-3 Policies and Procedures for Developing Hydro-static Design Basis (HDB), Pressure Design Basis (PDB),Strength
10、 Design Basis (SDB), and Minimum RequiredStrength (MRS) Ratings for Thermoplastic Piping Mate-rials or Pipe7PPI TR-4 HDB/SDB/PDB/MRS Listed Materials, PPI List-ing of Hydrostatic Design Basis (HDB), Strength DesignBasis (SDB), Pressure Design Basis (PDB), and MinimumRequired Strength (MRS) Ratings f
11、or Thermoplastic Pip-ing Materials or Pipe3. Terminology3.1 Definitions are in accordance with Terminology F412and abbreviations are in accordance with Terminology D1600,unless otherwise specified. The abbreviation of polyethyleneplastic is PE.3.2 standard thermoplastic pipe dimension ratio (SDR)the
12、 ratio of pipe outside diameter to wall thickness. It iscalculated by dividing the average outside diameter of the pipeby the minimum wall thickness.1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.10 on
13、 Fittings.Current edition approved March 1, 2010. Published April 2010. Originallyapproved in 1968. Last previous edition approved in 2004 as D2683 04. DOI:10.1520/D2683-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For A
14、nnual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.4Available from Plastics Pipe Inst
15、itute (PPI), 105 Decker Court, Suite 825,Irving, TX 75062, http:/www.plasticpipe.org.*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 States14. Classification4.1 This specificat
16、ion covers polyethylene fittings of thesocket type made as specified in 5.1 and 5.24.1.1 Fittings covered by this specification are normallymolded. In-line fittings such as couplings, unions, bushings,caps, nipples, etc., may be extruded or machined from extrudedstock. Special fittings such as trans
17、ition fittings and tappingteets shall be assembled and fabricated in accordance withprocedures agreed upon between the manufacturer and thepurchaser.4.1.2 Fittings covered by this specification are intended tobe joined by heat fusion to PE pipe.4.1.3 Fittings intended for use in the distribution of
18、naturalgas or petroleum fuels shall also meet the requirements ofSpecification D2513.5. Materials5.1 Polyethylene CompoundPolyethylene material com-pounds suitable for use in the manufacture of fittings under thisspecification shall meet Specification D3350 and shall meet theSpecification D3350 clas
19、sification and property requirementsin Table 1, and shall have PPI TR-4 HDB and HDS listings at73F (23C) and HDB listings 140F (60C) in accordancewith Table 1.5.2 Color and Ultraviolet (UV) StabilizationPolyethylenematerial compounds shall meet Specification D3350 code C orE. Code C material compoun
20、ds shall have 2 to 3 percent carbonblack. Code E material compounds shall be colored with UVstabilizer.5.3 Rework MaterialClean polyethylene compound fromthe manufacturers own production that met 5.1 and 5.2 asvirgin material is suitable for remolding into fittings, eitheralone or blended with new c
21、ompound of the same cellclassification or material designation. Fittings containing therework material shall meet the material and product require-ments of this specification.6. Requirements6.1 Dimensions and Tolerances:6.1.1 Fittings, sockets, dimensions, and tolerances shall beas shown in Table 2,
22、 Table 3, and Table 4 when measured inaccordance with 8.4. For reducing fittings, socket and insidediameter minimums for the appropriate size shall apply.6.1.2 The maximum angular variation of any opening shallnot be more than 2 off the true centerline axis.6.1.3 The minimum wall thickness of fittin
23、gs shall be 125 %of the minimum wall thickness of the pipe with which they aredesigned to be joined. For reducing fittings, the smallest sizewall thickness shall be 125 % of the smallest pipe wall.6.2 System Pressure Test Requirements:6.2.1 Short-Term Rupture StrengthThe minimum short-term rupture s
24、trength of the fitting and fused pipe shall not beless than the minimum short-term rupture strength of the pipeor tubing in the system when tested in accordance with 8.5.2.The test pressures shall be as shown in Table 5. Test specimensshall be prepared for testing as described in 8.5.1.6.2.2 Sustain
25、ed PressureThe fitting(s) and fused pipe ortubing shall not fail (as defined in the Descriptions of TermsSection of Test Method D1598) at the test pressures given inTable 6 when tested in accordance with 8.4. To ensureuniformity in preparation of assemblies for sustained pressureevaluation, all test
26、 joints shall be made in accordance with heatfusion practices found in D2657.7. Workmanship, Finish, and Appearance7.1 The manufacture of these fittings shall be in accordancewith good commercial practice so as to produce fittingsmeeting the requirements of this specification. Fittings shall behomog
27、eneous throughout and free of cracks, holes, foreigninclusions, or injurious defects. The fittings shall be as uniformas commercially practicable in color, opacity, density, andother physical properties.8. Test Methods8.1 ConditioningCondition the test specimens at 73.4 63.6F (23 6 2C) for 40 h mini
28、mum prior to test in accordancewith Procedure A of Methods D618, for those tests whereconditioning is required and in all cases of disagreement.TABLE 1 Specification D3350 Classification of Polyethylene Fittings MaterialsPhysical Properties Cell Classification and Properties for Polyethylene Pipe Ma
29、terialsPE2606 PE2706 PE2708 PE3608 PE3708 PE3710 PE4708 PE4710Density 2 2233344Melt Index 3 or 4 3 or 4 3 or 4 44444Flexural modulus $4 $4 $4 $4 $4 $4 $4 $5Tensile Strength $3 $3 $3 $4 $4 $4 $4 $4Slow crack growth resistance(F1473)6 7767777Hydrostatic strength classifica-tion3 3344444Color and UV St
30、abilizerACorE CorE CorE CorE CorE CorE CorE CorEHDB at 140F (60C), PPI TR-4,psi (MPa)B BBBBBBBHDB at 73F (23C), PPI TR-4,psi (MPa)630 (4.34) 630 (4.34) 800 (5.52) 800 (5.52) 800 (5.52) 1000(6.90)800 (5.52) 1000(6.90)ASee 5.2.BListing required; consult manufacturer for listed value.D2683 10128.2 Test
31、 ConditionsConduct tests at the standard labora-tory temperature of 73.4 6 3.6F (23 6 2C).8.3 SamplingSelect at random sufficient quantity of fit-tings from each lot of shipment and test to determine that thebasic properties and dimensions are in conformance with thisspecification.NOTE 1For individu
32、al orders or specifications, only those tests andnumbers of tests specifically agreed upon between the purchaser and themanufacturer need be conducted.8.4 DimensionsMeasure in accordance with Test MethodD2122.8.4.1 Maximum out-of-round tolerance on sockets appliesto the actual measured average insid
33、e diameter.NOTE 2ExampleIn the 1-in. IPS size, if the actual measuredaverage inside socket entrance diameter was 1.281 in. (32.54 mm) then theextreme measured diameters due to ovality can be 1.291 in. (32.79 mm)maximum and 1.271 in. (32.28 mm) minimum when the out-of-roundtolerance is 60.010 in. (2.
34、54 mm).8.5 Pressure Test:8.5.1 Prepare test assemblies in such a manner that each,whether individual fittings or groups of fittings, is a systemincorporating at least one length of pipe or tubing and one ormore fittings in addition to end closures. Fuse all fittingsoutlets with the appropriate size
35、pipe or tubing. One piece ofpipe in the system shall have a minimum length equal to fivepipe diameters.8.5.2 Short-Term Rupture TestThe test equipment,procedures, and failure definition shall be as specified in TestMethod D1599. Increase the hydrostatic pressure at a uniformrate such that the specim
36、en fails between 60 and 70 s from thestart of the test. Minimum failure pressures are shown in Table4.8.5.3 Sustained Pressure TestPrepare six fitting specimensas prescribed in 8.5.18.5.3.1 Sustained pressure tests shall be conducted in accor-dance with Table 6 and Test Method D1598 using water as t
37、heTABLE 2 Fittings for Outside Diameter-Controlled Polyethylene PipeAA Socket Entrance DiameterBB Socket Bottom DiameterC,DCDNominalPipeSize, in.,AverageDiameterToleranceon DiameterMaximumOut-of-RoundAverageDiameterTolerance onDiameterMaximumOut-of-RoundSocketDepth,minInside Diametermin maxin. (mm)1
38、2 0.810(20.57)+0.005(+0.127)0.010(0.254)0.008(0.203)0.804(20.42)+0.005(+0.127)0.026(0.660)0.008(0.203)0.625(15.88)0.648(16.46)0.804(20.42)34 1.020(25.91)0.008(0.203)0.010(0.254)1.012(25.70)+0.008(+0.203)0.012(0.305)0.010(0.254)0.625(15.88)0.814(20.68)1.020(25.91)1 1.275(32.38)0.008(0.203)0.010(0.254
39、)1.267(32.18)+0.008(+0.203)0.012(0.305)0.010(0.254)0.687(17.4)1.020(25.91)1.275(32.38)114 1.620(41.15)0.008(0.203)0.012(0.305)1.612(40.94)+0.008(+0.203)0.016(0.406)0.012(0.305)0.875(22.22)1.301(33.04)1.620(41.15)112 1.860(47.24)0.010(0.254)0.012(0.305)1.849(46.96)+0.010(+0.254)0.020(0.508)0.012(0.30
40、5)0.875(22.22)1.496(38.0)1.859(47.22)2 2.335(59.31)0.010(0.254)0.012(0.305)2.324(59.03)+0.010(+0.254)0.020(0.508)0.012(0.305)0.875(22.22)1.885(47.88)2.334(59.28)3 3.455(87.76)0.015(0.381)0.015(0.381)3.439(87.35)+0.015(+0.381)0.025(0.635)0.015(0.381)1.000(25.4)2.780(70.61)3.454(87.73)4 4.450(113.03)0
41、.015(0.381)0.015(0.381)4.434(112.62)+0.015(+0.381)0.035(0.889)0.015(0.381)1.125(28.58)3.575(90.80)4.449(113.00)AMinimum dimensions have zero negative tolerance. The sketches and designs of fittings are illustrative only. Entrance chamfer or radius is optional.BMeasured at top of socket wall taper, j
42、ust below entrance radius.CDimensions of tools should be checked for consistency with fittings used. Socket bottom diameter must be equal to or smaller than entrance diameter.DMeasured at bottom of socket wall taper, just above bottom radius.D2683 1013pressurizing medium. The “test sample” shall be
43、three speci-mens. Select one Table 6 Condition for the material designa-tion and test the three specimen test sample.8.5.3.2 Passing results are (a) non-failure for all threespecimens at a time equal to or greater than the “minimumaverage time before failure”, or (b) not more than one ductilespecime
44、n failure and the average time before failure for allthree specimens shall be greater than the specified “minimumaverage time before failure” for the selected Table 6 Condition.For Table 6 Conditions 1 through 5: if more than one ductilefailure occurs before the “minimum average time beforefailure”,
45、 it is permissible to conduct one retest at a Table 6Condition of lower stress and longer minimum average timebefore failure for the material designation. For Table 6 Condi-tion 6 no retest is permissible. Brittle failure of any specimenbefore the Table 6 “minimum average time before failure”constit
46、utes failure to meet this requirement and no retest isallowed.8.5.3.3 Provision for retest (if needed). The retest sampleshall be three specimens of the same pipe or tubing size andTABLE 3 Fittings for Outside Diameter-Controlled Polyethylene TubingANominalTubingSize,in.A Socket Entrance DiameterBB
47、Socket Bottom DiameterC,DCDAverageDiameterToleranceon DiameterMaximumOut-of-RoundAverageDiameterTolerance onDiameterMaximumOut-of-RoundSocketDepth,minInside Diametermin maxin. (mm)12 0.585(14.86)+0.010(+0.25)0.007(0.18)0.010(0.25)0.575(14.61)+0.010(+0.25)0.007(0.18)0.010(0.25)0.625(15.88)0.500(12.70
48、)0.585(14.86)34 0.835(21.21)0.010(0.25)0.010(0.25)0.825(20.96)0.010(0.25)0.010(0.25)0.625(15.88)0.750(19.05)0.835(21.21)1 1.075(27.30)0.008(0.20)0.008(0.20)1.070(27.18)+0.008(+0.20)0.012(0.30)0.008(0.20)0.625(15.88)0.850(21.59)1.078(27.38)114 1.330(33.78)0.008(0.20)0.010(0.25)1.322(33.58)0.008(0.20)
49、0.010(0.25)0.687(17.45)1.250(31.75)1.330(33.78)AMinimum dimensions have zero negative tolerance. The sketches and designs of fittings are illustrative only. Entrance chamfer or radius is optional.BMeasured at top of socket wall taper, just below entrance radius.CDimensions of tools should be checked for consistency with fittings used. Socket bottom diameter must be equal to or smaller than entrance diameter.DMeasured at bottom of socket wall t
