1、Designation: D3261 10a D3261 12 An American National StandardStandard Specification forButt Heat Fusion Polyethylene (PE) Plastic Fittings forPolyethylene (PE) Plastic Pipe and Tubing1This standard is issued under the fixed designation D3261; the number immediately following the designation indicate
2、s 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.This standard has been approved for use by agencies of the
3、 Department of Defense.1. Scope*1.1 This specification covers polyethylene (PE) butt fusion fittings for use with polyethylene pipe (IPS, DIPS, and ISO) andtubing (CTS). Included are requirements for materials, workmanship, dimensions, marking, sustained pressure, and burst pressure.1.2 The values s
4、tated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:2D1598 Test Method for Time-to-Failure of Plastic Pipe Un
5、der Constant Internal PressureD1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology for Abbreviated Terms Relating to PlasticsD2122 Test Method for Determining Dimensions of Thermoplastic Pipe and FittingsD2513 Specification for Poly
6、ethylene (PE) Gas Pressure Pipe, Tubing, and FittingsD3350 Specification for Polyethylene Plastics Pipe and Fittings MaterialsF412 Terminology Relating to Plastic Piping Systems2.2 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)32.3 Military Standard:MIL-STD-129 Marking for
7、Shipment and Storage32.4 National Sanitation Foundation Standard:Standard No. 14 for Plastic Piping Components and Related Materials42.5 Plastic Pipe Institute5PPI TR-3 Policies and Procedures for Developing Hydrostatic Design Basis (HDB), Pressure Design Basis (PDB), StrengthDesign Basis (SDB), and
8、 Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe7PPI TR-4 HDB/SDB/PDB/MRS Listed Materials, PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis(SDB), Pressure Design Basis (PDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping
9、Materialsor Pipe3. Terminology3.1 Definitions are in accordance with Terminology F412 and abbreviations are in accordance with Terminology D1600, unlessotherwise specified.1 This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility
10、of Subcommittee F17.10 on Fittings.Current edition approved April 1, 2010Aug. 1, 2012. Published April 2010December 2012. Originally approved in 1973. Last previous edition approved in 2010 asD3261 10.D3261 10a. DOI: 10.1520/D3261-10A.10.1520/D3261-12.2 For referenced ASTM standards, visit the ASTM
11、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 ASTM website.3 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Phila
12、delphia, PA 19111-5098, http:/dodssp.daps.dla.mil.4 Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140, http:/www.nsf.org.5 Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825, Irving, TX 75062, http:/www.plasticpipe.org.This documen
13、t 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 consult prior editions as app
14、ropriate. 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, PA 19428-2959. United St
15、ates13.2 dimension ratio (DR) for thermoplastic pipethe ratio of diameter to wall thickness. For this specification it is calculatedby dividing the specified outside diameter by the specified wall thickness of the fitting at its area of fusion. DRs are rounded anddo not calculate exactly.4. Classifi
16、cation4.1 GeneralThis specification covers butt fusion fittings intended for use with polyethylene pipe and tubing.4.1.1 Fittings covered by this specification are normally molded. Fittings may be machined from extruded or molded stock.4.1.2 Fittings fabricated by thermal welding are not included in
17、 this specification.4.1.3 Fittings intended for use in the distribution of natural gas or petroleum fuels shall also meet the requirements ofSpecification D2513.5. Ordering Information5.1 When ordering fittings under this specification, the following should be specified:5.1.1 Polyethylene compound (
18、material designation or trade name)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, DIPS, or schedule.5.1.3.3 Dimension ratio number or schedule number.6. Materials6.1 Polyethylene CompoundPolyethylene material compounds suitable for use in the
19、manufacture of fittings under thisspecification shall meet Specification D3350 and shall meet the Specification D3350 classification and property requirementsinTable 1 and shall have PPI TR-4 HDB and HDS listings at 73F (23C) and HDB listings 140F (60C) in accordance with Table1.6.2 Color and Ultrav
20、iolet (UV) StabilizationPolyethylene material compounds shall meet Specification Table 1 code C or E.Code C material compounds shall have 2 to 3 percent carbon black. Code E material compounds shall be colored with UVstabilizer.6.3 Rework MaterialClean polyethylene compound from the manufacturers ow
21、n production that met 6.1 and 6.2 as virginmaterial is suitable for remolding into fittings, either alone or blended with new compound of the same cell classification ormaterial designation. Fittings containing the rework material shall meet the material and product requirements of this specificatio
22、n.7. Requirements7.1 Dimensions and Tolerances:7.1.1 Outside DiameterNominal outside diameters of butt fusion fittings shall conform to the nominal iron pipe size (IPS),ductile iron pipe size (DIPS)or copper tubing size (CTS) dimensions at area of fusion. These dimensions and tolerances shall beas s
23、hown in Table 2, Table 3, Table 4 and of this specification.7.1.2 Inside Diameter (CTS Fittings Only)Inside diameters of butt fusion fittings for tubing at area of fusion shall conformto the dimensions of the tubing being joined. The dimensions and tolerances for the fittings are shown in Table 5.TA
24、BLE 1 Specification D3350 Classification of Polyethylene Fittings MaterialsPhysical Properties Cell Classification and Properties for Polyethylene Pipe MaterialsPE2606 PE2706 PE2708 PE3608 PE3708 PE3710 PE4708 PE4710Density 2 2 2 3 3 3 4 4Melt Index 3 or 4 3 or 4 3 or 4 4 4 4 4 4Flexural modulus $4
25、$4 $4 $4 $4 $4 $4 $5Tensile Strength $3 $3 $3 $4 $4 $4 $4 $4Slow crack growth resistance(F1473)6 7 7 6 7 7 7 7Hydrostatic strength classifica-tion3 3 3 4 4 4 4 4Color and UV StabilizerA C or E C or E C or E C or E C or E C or E C or E C or EHDB at 140F (60C), PPI TR-4,psi (MPa)B B B B B B B BHDB at
26、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)A See 6.2.B Listing required; consult manufacturer for listed value.D3261 1227.1.3 Wall ThicknessThe wall thicknesses of butt fusion fittings shall not be less than the minimum specifie
27、d for the pipe ortubing. The wall thicknesses and tolerances at the area of fusion shall be as shown in Table 5, Table 6, Table 7, and Table 8 ofthis specification.7.1.4 MeasurementsThese shall be made in accordance with Test Method D2122 for roundable pipe.7.1.5 Design DimensionsOverall fitting dim
28、ensions may be as preferred from a design standpoint by the manufacturer andaccepted by the purchaser consistent with 7.1.3.7.1.6 Special SizesWhere existing system conditions or special local requirements make other diameters or dimension ratiosnecessary, other sizes or dimension ratios, or both, s
29、hall be acceptable for engineered applications when mutually agreed upon bythe customer and the manufacturer, if the fitting is manufactured from plastic compounds meeting the material requirements of thisspecification, and the strength and design requirements are calculated on the same basis as tho
30、se used in this specification. Fordiameters not shown in Table 2, Table 3 or Table 4, the tolerance shall be the same percentage as that shown in the correspondingtables for the next smaller listed size. Minimum wall thickness for these special sizes shall not be less than the minimum wallspecified
31、for the pipe or tubing the fitting is designed to be used with. The maximum wall thickness allowed shall not be greaterthan 20 % thicker than the specified minimum wall, and shall be determined by 10.4.3 of this specification.TABLE 2 IPS Sizing System Outside Diameters and Tolerancesfor Fittings for
32、 Use with Polyethylene Pipe, in.Nominal PipeSizeAverage OutsideDiameter at Area ofFusionATolerance12340.8401.0500.0080.0081 1.315 0.010114 1.660 0.010112 1.900 0.0102 2.375 0.0103 3.500 0.0124 4.500 0.0156 6.625 0.0188 8.625 0.02510 10.750 0.02712 12.750 0.03614 14.000 0.06316 16.000 0.07218 18.000
33、0.08120 20.000 0.09021.5 21.500 0.09722 22.000 0.09924 24.000 0.10828 28.000 0.12632 32.000 0.14436 36.000 0.16242 42.000 0.18948 48.000 0.216A Defined as measured 14 to 12 in. (6.4 to 12.7 mm) from fitting outlet extremity.TABLE 3 DIPS Sizing System Outside Diameters and Tolerancesfor Fittings for
34、Use with Polyethylene Pipe, in.Nominal Pipe Size Average Outside Diameterat Area of Fusion ToleranceA3 3.96 0.0164 4.80 0.0226 6.90 0.0318 9.05 0.04110 11.10 0.05012 13.20 0.05914 15.30 0.06916 17.40 0.07818 19.50 0.08820 21.60 0.09724 25.80 0.11630 32.000 0.14436 38.30 0.17242 44.50 0.20048 50.80 0
35、.229A Defined as measured 14 to 12 in. (6.4 to 12.7) from fitting outlet extremity.D3261 1237.2 Pressure Test Requirements :7.2.1 Short-Term Rupture Strength for Fittings 12 to 12 in. and 90 to 315 mm, Nominal DiameterThe minimum short-termrupture strength of the fitting and fused pipe or tubing sha
36、ll not be less than the minimum short-term rupture strength of the pipeor tubing in the system when tested in accordance with 10.5.3. These minimum pressures shall be as shown in Table 9 of thisspecification. Test specimens shall be prepared for testing in the manner described in 10.5.1 of this spec
37、ification. The testequipment, procedures, and failures definitions shall be as specified in Test Method D1599.7.2.2 Short-Term Strength for Fittings 14 to 48 in. and 355 to 1600 mm, Nominal DiameterFittings shall not fail when testedin accordance with 10.5.3. The minimum pressure shall be as shown i
38、n Table 9 of this specification. Test specimens shall beprepared for testing in the manner described in 10.2 of this specification. The test equipment and procedures shall be as specifiedin Test Method D1599.7.2.3 Sustained PressureThe fitting and fused pipe or tubing shall not fail, as defined in T
39、est Method D1598, when tested atthe time, pressures, and test temperatures selected from test options offered in Table 10. The test specimens shall be prepared fortesting in the manner prescribed in 10.5.1.8. Workmanship, Finish, and Appearance8.1 The manufacture of these fittings shall be in accord
40、ance with good commercial practice so as to produce fittings meetingthe requirements of this specification. Fittings shall be homogeneous throughout and free of cracks, holes, foreign inclusions, orother injurious defects. The fittings shall be as uniform as commercially practicable in color, opacit
41、y, density, and other physicalproperties.9. Sampling9.1 Parts made for sale under this specification should be sampled at a frequency appropriate for the end use intended. Whenthe fittings are to be installed under a system specification (such as Specification D2513 for gas), the minimum requirement
42、s ofthat specification must be satisfied.10. Test Methods10.1 GeneralThe test methods in this specification cover fittings to be used with pipe and tubing for gas, water, and otherengineered piping systems. Test methods that are applicable from other specifications will be referenced in the paragrap
43、h pertainingto the particular test. Certain special test methods applicable to this specification only are explained in the appropriate paragraph.10.2 ConditioningUnless otherwise specified, condition the specimens prior to test at 73.4 6 3.6F (23 6 2C) for not lessthan 6 h in air, or 1 h in water,
44、for those tests where conditioning is required and in all cases of disagreement. Newly molded fittingsshall be conditioned 40 h prior to test.10.3 Test ConditionsConduct the tests at the standard laboratory temperature of 73.4 6 3.6F (23 6 2C) unless otherwisespecified.TABLE 4 ISO Sizing System (ISO
45、 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 250.0 252.3280 280.0 282.5315 315.0 317.8355 355.0 358.2400 400.0 403.6450 450.0 454.1500 5
46、00.0 504.5560 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 1614.4A Specified in ISO 3607.D3261 12410.4 Dimensions and Tolerances:10.4.1 Outside DiameterMeasure the outside diameter of the fittings at the area
47、 of fusion in accordance with the WallThickness section of Method D2122 by use of a circumferential tape readable to the nearest 0.001 in. (0.02 mm).10.4.2 Inside Diameter (CTS Fittings Only)Use a stepped plug gage to determine the inside diameter of the CTS end of thefitting. The plug gage shall be
48、 of the go/no go type and shall have 12-in. (12.7-mm) land lengths cut to the minimum inside diameterand maximum inside diameter. A fitting is unacceptable (no go) if it fits snugly on the minimum inside diameter land of the gageor if it fits loosely on the maximum diameter land of the gage.10.4.3 W
49、all ThicknessMake a series of measurements using a cylindrical anvil tubular micrometer or other accurate deviceat closely spaced intervals to ensure that minimum and maximum wall thicknesses to the nearest 0.001 in. (0.02 mm) have beendetermined. Make a minimum of six measurements at each cross section.10.5 Pressure Testing:TABLE 5 Diameter, Wall Thickness, and Tolerances for Fittings for Use with Plastic TubingTubing Typein. (mm)Nominal TubingSize, in.Diameter at Area of FusionAMinimum Wa
