1、Designation: D2683 14 An 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 U.S. Depart
3、ment of Defense.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 pressureperformance are included. Where applic
4、able 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 not considered standard.1.3 The following saf
5、ety 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 establish appropriate safety and healthpractices
6、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 PressureD1599 Test Method for Resistance to Short-Time Hy
7、draulicPressure 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, Tubing, and FittingsD2657 Practice for Heat Fus
8、ion 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 Piping Systems2.2 Federal Standard:Fed. Std. No.
9、 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 Design Basis (SDB), and Minimum RequiredStren
10、gth (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 for Thermoplastic Pip-ing Materials or Pipe3. T
11、erminology3.1 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 ratio of pipe outside diameter to wall thickn
12、ess. It iscalculated by dividing the average outside diameter of the pipeby the minimum wall thickness.4. Classification4.1 This specification covers polyethylene fittings of thesocket type made as specified in 5.1 and 5.21This specification is under the jurisdiction of ASTM Committee F17 on Plastic
13、Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved Nov. 1, 2014. Published December 2014. Originallyapproved in 1968. Last previous edition approved in 2010 as D2683 103. DOI:10.1520/D2683-14.2For referenced ASTM standards, visit the ASTM webs
14、ite, 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.3DLA Document Services Building 4/D 700 Robbins Avenue Philadelphia, PA19111-5094 http:/quicksearch.dla.mil/4Ava
15、ilable from Plastics Pipe Institute (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 StatesThis in
16、ternational standard 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)
17、Committee.14.1.1 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 transition fittings and tappingteets shall be assembled and fabricated in acc
18、ordance 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 naturalgas or petroleum fuels shall also meet the requirements ofSpecifi
19、cation 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 classification and property requirementsin Table 1, and shall have PPI TR-4
20、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 compounds shall have 2 to 3 percent carbonblack. Code E material compounds shal
21、l 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 compound of the same cellclassification or material designation. Fittings
22、 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 and Table 3 when measured in accordancewith 8.4. For reducing fittings,
23、socket and inside diameterminimums for the appropriate size shall apply.6.1.1.1 Laying LengthsLaying lengths shall be in accor-dance with manufacturers specifications.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 thickn
24、ess of fittings 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-t
25、erm rupture strength 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 4. Test specimensshall be prepared for testing as described in 8.5.1.
26、6.2.2 Sustained 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 5 when tested in accordance with 8.5.3. To ensureuniformity in preparation of assemblies for sustained pressureevalu
27、ation, all test 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. Fitting
28、s shall behomogeneous 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
29、) for 40 h minimum prior to test in accordancewith Procedure A of Methods D618, for those tests whereconditioning is required and in all cases of disagreement.8.2 Test ConditionsConduct tests at the standard labora-tory temperature of 73.4 6 3.6F (23 6 2C).TABLE 1 Specification D3350 Classification
30、of Polyethylene Fittings MaterialsPhysical Properties Cell Classification and Properties for Polyethylene Pipe MaterialsPE2606 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
31、 $4 $4 $4Slow crack growth resistance(F1473)6 7767777Hydrostatic strength classifica-tion3 3344444Color and UV StabilizerACorE 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) 10
32、00(6.90)800 (5.52) 1000(6.90)ASee 5.2.BListing required; consult manufacturer for listed value.D2683 1428.3 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
33、 1For individual 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
34、 average inside 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
35、60.010 in. (2.54 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 app
36、ropriate size 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 t
37、hat the specimen 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 5 and Test Method D1598 us
38、ing water as theTABLE 2 Fittings for Outside Diameter-Controlled Polyethylene PipeAA Socket Entrance DiameterBB Socket Bottom DiameterC,DCDNominalPipeSize, in.,AverageDiameterToleranceon DiameterMaximumOut-of-RoundAverageDiameterTolerance onDiameterMaximumOut-of-RoundSocketDepth,minInside Diametermi
39、n maxin. (mm)12 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(0.2
40、03)0.010(0.254)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.
41、508)0.012(0.305)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
42、4.450(113.03)0.015(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
43、 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 taper, just above bottom radius.D2683 143pressurizing medium. The “test samp
44、le” shall be three speci-mens. Select one Table 5 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 d
45、uctilespecimen failure and the average time before failure for allthree specimens shall be greater than the specified “minimumaverage time before failure” for the selected Table 5 Condition.For Table 5 Conditions 1 through 5: if more than one ductilefailure occurs before the “minimum average time be
46、forefailure”, it is permissible to conduct one retest at a Table 5Condition of lower stress and longer minimum average timebefore failure for the material designation. For Table 5 Condi-tion 6 no retest is permissible. Brittle failure of any specimenbefore the Table 5 “minimum average time before fa
47、ilure”constitutes 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 andmaterial designation from the same time frame as the “testsample”. For the retest, any specimen failure be
48、fore the“minimum average time before failure” at the retest conditionof lower stress and longer minimum average time beforefailure constitutes failure to meet this requirement.9. Packaging and Package Marking9.1 Fittings shall be marked with the following:9.1.1 Manufacturers name or trademark,9.1.2
49、Material designation (such as, PE 27086, PE 3608, orPE 4710),NOTE 3Earlier editions of Specification D2683 included PE materialdesignations PE2406, PE3406, PE3407 and PE3408. Changes to Specifi-cation D3350 and PPI TR-3 led to changes in thermoplastic materialdesignation codes, resulting in material designation PE2406 being super-seded by material designations PE2606 and PE2708, material designationPE3406 being superseded by PE3606, material designation PE3407 beingdiscontinued
