1、Designation: D 3261 03An American National StandardStandard Specification forButt Heat Fusion Polyethylene (PE) Plastic Fittings forPolyethylene (PE) Plastic Pipe and Tubing1This standard is issued under the fixed designation D 3261; the number immediately following the designation indicates the yea
2、r 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 (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Departm
3、ent of Defense.1. Scope1.1 This specification covers polyethylene (PE) butt fusionfittings for use with polyethylene pipe (IPS and ISO) andtubing (CTS). Included are requirements for materials, work-manship, dimensions, marking, sustained pressure, and burstpressure.1.2 The values given in parenthes
4、es are provided for infor-mation only.2. Referenced Documents2.1 ASTM Standards:D 1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal Pressure2D 1599 Test Method for Resistance to Short-Time Hydrau-lic Failure Pressure of Plastic Pipe, Tubing, and Fittings2D 1600 Terminology
5、for Abbreviated Terms Relating toPlastics3D 2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and Fittings2D 2513 Specification for Thermoplastic Gas Pressure Pipe,Tubing, and Fittings2D 3350 Specification for Polyethylene Plastics Pipe andFittings Materials4F 412 Terminology Relati
6、ng to Plastic Piping Systems22.2 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)52.3 Military Standard:MIL-STD-129 Marking for Shipment and Storage52.4 National Sanitation Foundation Standard:Standard No. 14 for Plastic Piping Components and RelatedMaterials63. Terminology3.
7、1 Definitions are in accordance with Terminology F 412and abbreviations are in accordance with Terminology D 1600,unless otherwise specified.3.2 dimension ratio (DR) for thermoplastic pipethe ratioof diameter to wall thickness. For this specification it iscalculated by dividing the specified outside
8、 diameter by thespecified wall thickness of the fitting at its area of fusion. DRsare rounded and do not calculate exactly.4. Classification4.1 GeneralThis specification covers butt fusion fittingsintended for use with polyethylene pipe and tubing.4.1.1 Fittings covered by this specification are nor
9、mallymolded. Fittings may be machined from extruded or moldedstock.4.1.2 Fittings fabricated by thermal welding are not in-cluded in this specification.4.1.3 Fittings intended for use in the distribution of naturalgas or petroleum fuels shall also meet the requirements ofSpecification D 2513.5. Orde
10、ring Information5.1 When ordering fittings under this specification, thefollowing should be specified:5.1.1 Polyethylene compound (material designation or tradename)5.1.2 Style of fitting (tee, 90 ell, and the like)5.1.3 Size:5.1.3.1 Nominal diameter.5.1.3.2 CTS, IPS, or schedule.5.1.3.3 Dimension r
11、atio number or schedule number.1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved April 10, 2003. Published August 2003. Originallyapproved in 1973. Last previous ed
12、ition approved in 1997 as D 3261 97.2Annual Book of ASTM Standards, Vol 08.04.3Annual Book of ASTM Standards, Vol 08.01.4Annual Book of ASTM Standards, Vol 08.02.5Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.6Availa
13、ble from the National Sanitation Foundation, P.O. Box 1468, Ann Arbor,MI 48106.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Materials6.1 Basic MaterialsThis specification covers fittingsmade from polyethylene plastics as define
14、d in SpecificationD 3350.NOTE 1The Plastics Pipe Insitute has recommended a hydrostaticdesign stress of 630 psi (4.34 MPa) for pipe compounds designated as PE2406 and 800 psi (5.51 MPa) for compounds designated as PE 3408.6.2 Rework MaterialClean rework material generatedfrom the manufacturers own p
15、roduction may be used by thesame manufacturer as long as the fittings produced conform tothe requirements of this specification.7. Requirements7.1 Dimensions and Tolerances:7.1.1 Outside DiameterNominal outside diameters of buttfusion fittings shall conform to the nominal iron pipe size (IPS)or copp
16、er tubing size (CTS) dimensions at area of fusion.These dimensions and tolerances shall be as shown in Table 2and Table 3 of this specification.7.1.2 Inside Diameter (CTS Fittings Only)Inside diam-eters of butt fusion fittings for tubing at area of fusion shallconform to the dimensions of the tubing
17、 being joined. Thedimensions and tolerances for the fittings are shown in Table 4.7.1.3 Wall ThicknessThe wall thicknesses of butt fusionfittings shall not be less than the minimum specified for thepipe or tubing. The wall thicknesses and tolerances at the areaof fusion shall be as shown in Table 4,
18、 Table 5 and Table 6 ofthis specification.7.1.4 MeasurementsThese shall be made in accordancewith Test Method D 2122 for roundable pipe.7.1.5 Design DimensionsOverall fitting dimensions maybe as preferred from a design standpoint by the manufacturerand accepted by the purchaser consistent with 7.1.3
19、.7.1.6 Special Sizes Where existing system conditions orspecial local requirements make other diameters or dimensionratios necessary, other sizes or dimension ratios, or both, shallbe acceptable for engineered applications when mutuallyagreed upon by the customer and the manufacturer, if the fitting
20、is manufactured from plastic compounds meeting the materialrequirements of this specification, and the strength and designrequirements are calculated on the same basis as those used inthis specification. For diameters not shown in Table 2 or Table3, the tolerance shall be the same percentage as that
21、 shown inthe corresponding tables for the next smaller listed size.Minimum wall thickness for these special sizes shall not be lessthan the minimum wall specified for the pipe or tubing thefitting is designed to be used with. The maximum wallthickness allowed shall not be greater than 20 % thicker t
22、hanthe specified minimum wall, and shall be determined by 10.4.3of this specification.7.2 Pressure Test Requirements:7.2.1 Short-Term Rupture Strength for Fittings12 to 12 in.and 90 to 315 mm, Nominal DiameterThe minimum short-term rupture strength of the fitting and fused pipe or tubingshall not be
23、 less than the minimum short-term rupture strengthof the pipe or tubing in the system when tested in accordanceTABLE 1 Specification D 3350 Classification of PolyethyleneFittings MaterialsFor HDB of 1250 psi(8.6 MPa)1600 psi(11 MPa)Physical Properties and Cell Classification Limits are:Density (base
24、 resin) 2 3Melt Index 3 or 4 3 or 4Flexural Modulus 4 to 5 4 or 5 or 6Tensile Strength 3 or 4 3 or 4 or 6SCG ResistanceA4or6 4or6HDB 3 4Color and UV Stabilizer C or E C or EAIn accordance with the requirements of Specification D 2513a6isrequiredwhen fittings are intended for use in the distribution
25、of natural gas or petroleumfuels.TABLE 2 IPS Sizing System Outside Diameters and Tolerancesfor Fittings for Use with Polyethylene Pipe, in.Nominal PipeSizeAverage OutsideDiameter at Area ofFusionATolerance12340.8401.05060.00860.0081 1.315 60.010114 1.660 60.010112 1.900 60.0102 2.375 60.0103 3.500 6
26、0.0124 4.500 60.0156 6.625 60.0188 8.625 60.02510 10.750 60.02712 12.750 60.03614 14.000 60.06316 16.000 60.07218 18.000 60.08120 20.000 60.09021.5 21.500 60.09722 22.000 60.09924 24.000 60.10828 28.000 60.12632 32.000 60.14436 36.000 60.16242 42.000 60.18948 48.000 60.216ADefined as measured14 to12
27、 in. (6.4 to 12.7 mm) from fitting outlet extremity.TABLE 3 ISO Sizing System (ISO 161/1) Outside Diameters andTolerances for Fit for Use with Polyethylene Pipe, mmNominal PipeSizeAverage Outside Diameter at Area of FusionMin MaxA90 90.0 90.8110 110.0 111.0160 160.0 161.4200 200.0 201.8250 250.0 252
28、.3280 280.0 282.5315 315.0 317.8355 355.0 358.2400 400.0 403.6450 450.0 454.1500 500.0 504.5560 560.0 565.0630 630.0 635.7710 710.0 716.4800 800.0 807.2900 900.0 908.11000 1000.0 1009.01200 1200.0 1210.81400 1400.0 1412.61600 1600.0 1614.4ASpecified in ISO 3607.D 3261 032with 10.5.3. These minimum p
29、ressures shall be as shown inTable 7 of this specification. Test specimens shall be preparedfor testing in the manner described in 10.5.1 of this specifica-tion. The test equipment, procedures, and failures definitionsshall be as specified in Test Method D 1599.7.2.2 Short-Term Strength for Fittings
30、 14 to 48 in. and 355to 1600 mm, Nominal DiameterFittings shall not fail whentested in accordance with 10.5.3. The minimum pressure shallbe as shown in Table 7 of this specification. Test specimensshall be prepared for testing in the manner described in 10.2 ofthis specification. The test equipment
31、and procedures shall beas specified in Test Method D 1599.7.2.3 Sustained PressureThe fitting and fused pipe ortubing shall not fail, as defined in Test Method D 1598, whentested at the time, pressures, and test temperatures selectedfrom test options offered in Table 8. The test specimens shall bepr
32、epared for testing in the manner prescribed in 10.5.1.8. Workmanship, Finish, and Appearance8.1 The manufacture of these fittings shall be in accordancewith good commercial practice so as to produce fittingsmeeting the requirements of this specification. Fittings shall behomogeneous throughout and f
33、ree of cracks, holes, foreigninclusions, or other injurious defects. The fittings shall be asuniform as commercially practicable in color, opacity, density,and other physical properties.9. Sampling9.1 Parts made for sale under this specification should besampled at a frequency appropriate for the en
34、d use intended.TABLE 4 Diameter, Wall Thickness, and Tolerances for Fittings for Use with Plastic TubingTubing Typein. (mm)Nominal TubingSize, in.Diameter at Area of FusionAMinimum WallThickness, in. (mm)Outside, in. (mm) Inside, in. (mm)Average Tolerance Average Tolerance0.062 (1.57)12 CTS34 CTS0.6
35、25 (15.88)0.875 (22.22)60.010 (60.26)6 0.010 (60.26)0.495 (12.58)0.745 (18.92)60.004 (60.10).0.062 (1.58).0.090 (2.29)12 CTS 0.625 (15.88) 60.010 (60.26) 0.437 (11.10) 60.004 (60.10) 0.090 (2.28)34 CTS 0.875 (22.22) 60.010 (60.26) 0.687 (17.44) 60.004 (60.10) 0.090 (2.28)1 CTS 1.125 (28.58) 60.013 (
36、60.34) 0.937 (23.80) 60.005 (60.12) 0.090 (2.28)114 CTS 1.375 (34.92) 60.013 (60.34) 1.187 (30.14) 60.005 (60.12) 0.090 (2.28)DR 1134 CTS1 CTS114 CTS0.875 (22.22)1.125 (28.58)1.375 (34.92)60.010 (60.26)60.013 (60.34)60.013 (60.34)0.715 (18.16)0.915 (23.24)1.125 (28.58)60.004 (60.10)60.005 (60.12)60.
37、005 (60.12)0.077 (1.96)0.101 (2.56)0.121 (3.08)DR 9.312 CTS 0.625 (15.88) 60.010 (60.26) 0.483 (12.26) 60.004 (60.10) 0.067 (1.70)34 CTS 0.875 (22.22) 60.010 (60.26) 0.679 (17.24) 60.004 (60.10) 0.094 (2.38)1 CTS 1.125 (28.58) 60.013 (60.34) 0.873 (22.18) 60.005 (60.12) 0.121 (3.08)114 CTS 1.375 (34
38、.92) 60.013 (60.34) 1.069 (27.16) 60.005 (60.12) 0.148 (3.76)ADefined as measured14 to12 in. (6.4 to 12.7 mm) from fitting outlet extremity.TABLE 5 IPS Sizing System Wall Thickness and Tolerance at the Area of Fusion for Fittings for Use with Polyethylene Pipe, in.A ,B,CNominal Pipe SizeMinimum Wall
39、 ThicknessSCH 40 SCH 80 SDR 21 SDR 17 SDR 13.5 DR 10 DR 11.5 SDR 11 DR 9.3 SDR 912 0.109 0.147 . . . . . . . . . . . . . . . 0.076 0.090 . . .34 0.113 0.154 . . . . . . . . . . . . . . . 0.095 0.113 0.1171 0.133 0.179 . . . . . . . . . . . . . . . 0.119 0.142 0.146114 0.140 0.191 . . . . . . . . . 0
40、.166 . . . 0.151 0.179 0.184112 0.145 0.200 . . . . . . . . . . . . . . . 0.173 0.204 0.2112 0.154 0.218 . . . . . . . . . . . . . . . 0.216 0.256 0.2643 0.216 0.300 . . . . . . 0.259 . . . 0.305 0.318 0.377 0.3894 0.237 0.337 . . . 0.264 0.333 . . . 0.392 0.409 0.484 0.5006 0.280 0.432 0.316 0.390
41、0.491 . . . 0.576 0.603 0.713 0.7368 0.322 . . . 0.410 0.508 0.639 . . . 0.750 0.785 0.928 0.95810 0.365 . . . 0.511 0.633 0.797 . . . 0.935 0.978 1.156 1.19412 0.406 . . . 0.608 0.750 0.945 . . . 1.109 1.160 1.371 1.41714 . . . . . . 0.667 0.824 . . . . . . . . . 1.273 1.505 1.55616 . . . . . . 0.7
42、62 0.941 . . . . . . . . . 1.455 1.720 1.77818 . . . . . . 0.857 1.059 . . . . . . . . . 1.636 1.935 2.00020 . . . . . . 0.952 1.176 . . . . . . . . . 1.818 2.151 2.22221.5 . . . . . . 1.024 1.265 . . . . . . . . . . . . . . . . . .22 . . . . . . 1.048 1.294 . . . . . . . . . 2.000 2.366 2.44424 . .
43、 . . . . 1.143 1.412 . . . . . . . . . 2.182 2.581 . . .28 . . . . . . 1.333 1.647 . . . . . . . . . 2.545 . . . . . .32 . . . . . . 1.524 1.882 . . . . . . . . . 2.909 . . . . . .36 . . . . . . 1.714 2.118 . . . . . . . . . . . . . . . . . .42 . . . . . . 2.000 2.471 . . . . . . . . . . . . . . . .
44、 . .48 . . . . . . 2.286 . . . . . . . . . . . . . . . . . . . . .ATolerance +20 %, 0 %.BFor those SDR groups having overlapping thickness requirements, a manufacturer may represent their product as applying to the combination (for example, 11.0/11.5)so long as their product falls within the dimensi
45、onal requirements of both DRs.CFor wall thicknesses not listed the minimum wall thickness may be calculated by the average outside diameter/SDR rounded up to the nearest 0.001 in.D 3261 033When the fittings are to be installed under a system specifica-tion (such as Specification D 2513 for gas), the
46、 minimumrequirements of that specification must be satisfied.10. Test Methods10.1 GeneralThe test methods in this specification coverfittings to be used with pipe and tubing for gas, water, and otherengineered piping systems. Test methods that are applicablefrom other specifications will be referenc
47、ed in the paragraphpertaining to the particular test. Certain special test methodsapplicable to this specification only are explained in theappropriate paragraph.10.2 ConditioningUnless otherwise specified, conditionthe specimens prior to test at 73.4 6 3.6F (23 6 2C) for notless than6hinair,or1hinw
48、ater, for those tests whereconditioning is required and in all cases of disagreement.Newly molded fittings shall be conditioned 40 h prior to test.10.3 Test ConditionsConduct the tests at the standardlaboratory temperature of 73.4 6 3.6F (23 6 2C) unlessotherwise specified.10.4 Dimensions and Tolera
49、nces:10.4.1 Outside DiameterMeasure the outside diameterof the fittings at the area of fusion in accordance with the WallThickness section of Method D 2122 by use of a circumferen-tial tape readable to the nearest 0.001 in. (0.02 mm).10.4.2 Inside Diameter (CTS Fittings Only)Use a steppedplug gage to determine the inside diameter of the CTS end ofthe fitting. The plug gage shall be of the go/no go type and shallhave12-in. (12.7-mm) land lengths cut to the minimum insidediameter and maximum inside diameter. A fitting is unaccept-able
