1、Designation: F2600 09 (Reapproved 2018) An American National StandardStandard Specification forElectrofusion Type Polyamide-11 Fittings for OutsideDiameter Controlled Polyamide-11 Pipe and Tubing1This standard is issued under the fixed designation F2600; the number immediately following the designat
2、ion indicates 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 polyamid
3、e-11 electrofusionfittings for use with outside diameter-controlled polyamide-11pipe, covered by Specification D2513. Requirements formaterials, workmanship, and testing performance are included.Where applicable in this specification “pipe” shall mean “pipe”or “tubing.”1.2 The values stated in inch-
4、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 safety hazards caveat pertains only to thetest method portion, Section 9, of this specification:
5、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, health, andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.4 This
6、 international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (
7、TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD1599 Test Method for Resistance to Short-Time Hydrauli
8、cPressure 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 Thermoplastic Gas Pressure Pipe,Tubing, and FittingsD6779 Classification System for and B
9、asis of Specificationfor Polyamide Molding and Extrusion Materials (PA)F412 Terminology Relating to Plastic Piping SystemsF905 Practice for Qualification of Polyethylene Saddle-Fused Joints3. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology F412, and abbreviations are in acc
10、ordance with Termi-nology D1600, unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.2.1 electrofusiona heat fusion joining process where theheat source is an integral part of the fitting, such that whenelectric current is applied, heat is produced that melts and joinsthe
11、 plastics.3.2.2 fusion interfacesurface in the heat fusion processwhere the plastic materials of the products being joined bondtogether.3.2.3 fusion zone lengthtotal length of the melted materialin the fitting cross-section under evaluation.4. Materials and Manufacture4.1 This specification covers f
12、ittings made from polyamide11 (PA11) meeting the requirements for Group 3, Class 2, andGrade 3, (PA32312) as prescribed in Specification D6779.4.2 Rework MaterialClean rework polyamide-11 materialof the same resin, free of any wire or contaminants generatedfrom the fitting manufacturers own producti
13、on, may be usedby the same manufacturer, as long as the fittings producedconform to the requirements of this specification.4.3 Heating MechanismThe heat mechanism shall be ofmaterials not detrimental to the performance of the fitting orthe pipe to which it is intended to be joined.1This specificatio
14、n is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.60 on Gas.Current edition approved Feb. 1, 2018. Published March 2018. Originallyapproved in 2006. Last previous edition approved in 2013 as F260009(2013). DOI:10.1520/F260
15、0-09R18.2For referenced ASTM standards, visit the ASTM website, 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.Copyright ASTM International, 100 Barr Harbor Drive,
16、PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international 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
17、 by the World Trade Organization Technical Barriers to Trade (TBT) Committee.15. Performance Requirements5.1 The following requirements are for electrofusion jointsthat have been joined using the manufacturers recommendedjoining procedures. These requirements must be met by eachelectrofusion joint d
18、esign, on each size and type of pipematerial for which the manufacturer recommends use of hisfitting. Any revisions to the electrofusion joint design orprocessing by the manufacturer after the initial testing requiresretesting to ensure these requirements can still be met. Fittingsintended for use i
19、n the distribution of natural gas or liquidpetroleum gas shall also meet the requirements of SpecificationD2513.5.1.1 It is not required that each configuration of a fitting betested to meet all of these qualifications (that is, 2 in. mainsaddle joint with multiple outlet configurations offered) as
20、longas the electrofusion joint design is not altered in the configu-ration differences.NOTE 1It is permissible when accomplishing these tests, to do so onthe highest and lowest dimension ratio of the same pipe material. If inthose tests all performance requirements are met, all dimension ratiosbetwe
21、en those tested may be considered as having met the requirements.These tests do not have to cover the full range of dimension ratiosavailable, only the dimension ratio range on which the manufacturerrecommends his fitting be used.5.2 Pressure Requirements:5.2.1 Minimum Hydraulic Burst PressureThe mi
22、nimumhydraulic burst pressure of the test specimen shall not be lessthan that required to produce 3900 psi (26.9 MPa) fiber stressin the pipe being used in the test when tested in accordancewith 9.1. The test equipment, procedures, and failures defini-tions shall be as specified in Test Method D1599
23、.5.2.2 Sustained PressureThe fitting and fused joint shallnot fail when tested in accordance with 9.2.5.3 Tensile Strength Requirements (Coupling Type JointsOnly)The fitting or the pipe to fitting joint made on pipe shallnot fail when tested in accordance with 9.3. Specimens shall besubjected to a t
24、ensile stress that causes the pipe to yield orcauses the pipe to break outside the joint area. Tensile testsmust be made on specimens as joined, not on straps cut fromthe specimen. Yielding must be measured only in the pipe,independent of the fitting or joint.5.4 Impact Resistance (Saddle Type Joint
25、s Only)The jointmade on the specimen shall not fail when impacted with a forcesufficient to break the body or other portion of the specimen.Tests of 500 ft-lb or higher impact with no failures noted shallbe considered as a “pass” impact test. The device for testingand the methods shall be as defined
26、 in Practice F905.5.5 Joint Integrity Tests(Couplings and Saddle TypeJoints)The joint made on the specimen shall meet therequirements in 9.4 and 9.5 of this specification, when tested inaccordance with 9.4.6. Dimensions, Mass, and Permissible Variations6.1 Dimension and tolerances of electrofusion f
27、ittings mustbe such that heat fusion is possible to outside diameter (OD)controlled PA-11 pipes such as those listed in SpecificationsD2513, such that the joints will satisfy the performancerequirements in Section 5. ( See Test Method D2122.)6.2 Because of the varying designs for electrofusion fitti
28、ngs,the actual spread of dimensions may be quite different frommanufacturer to manufacturer. A table of dimensions andtolerances encompassing these differences would be meaning-less and without value and, therefore, is omitted from thisspecification.6.3 The manufacturer shall furnish to the user the
29、 electricalresistance, critical dimensions, and tolerances of his fittings.This information must include at least the following dimen-sions and tolerances:6.3.1 Coupling inside diameter,6.3.2 Temperature joining limits, and6.3.3 Operating pressure of the fitting.NOTE 2There are other items that fall
30、 beyond the scope of thisspecification which would be of interest to the user for proper applicationof the fittings and is recommended as additional information to befurnished. A few of these are: (1) maximum pipe out of round allowed atjoint area; (2) minimum/maximum pipe SDR capability of the fitt
31、ing, and(3) for saddles intended for use on a live main, the maximum allowableline pressure when making the joint.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
32、specification.7.2 The fittings shall be homogeneous throughout, exceptwhere a heating coil or electrical connectors are incorporated,and free of cracks, holes, foreign inclusions, or injuriousdefects such as gouges, dents, cuts, etc. The fittings shall be asuniform as commercially practicable in opa
33、city, density, andother physical properties.Any heating coils, connecting cables,connectors, and related electrical power source shall be de-signed to prevent electrical shock to the user.8. Specimen Preparation8.1 Conditioning:8.1.1 Unless otherwise specified, condition the specimens(pipe and fitti
34、ngs) prior to joining at the minimum pipetemperature allowable for fusion as recommended by themanufacturer, for not less than 16 h and make the fusion jointat that temperature for those tests where conditioning isrequired.8.1.2 Unless otherwise specified, condition the specimens(pipe and fittings)
35、prior to joining at the maximum pipetemperature allowable for fusion as recommended by themanufacturer, for not less than 16 h and make the fusion jointat that temperature for those tests where conditioning isrequired.8.2 Test ConditionsConduct the tests at the StandardLaboratory Temperature of 23 6
36、 2 C (73.4 6 3.6 F) unlessotherwise specified.8.3 Preparation of Specimens for Testing:8.3.1 Prepare test specimens so that the minimum length ofunreinforced pipe on one side of any fitting is equal to threetimes the diameter of the pipe, but in no case less than 12 in.(304 mm). It is permissible to
37、 test multiple fittings togetherF2600 09 (2018)2provided they are separated by a minimum distance equal tothree times the diameter of the pipe, but in no case less than 12in. (304 mm).8.3.2 Fuse all fitting outlets with the appropriate size pipe inaccordance with the manufacturers recommended proced
38、ures.8.3.3 All saddle fusion joint specimens conditioned as in8.1.2 and destined for quick burst testing as in 9.1 andsustained pressure testing as in 9.2, are to be joined with thepipe at no less than maximum allowable operating pressure ofthe pipe system or fitting, whichever is lowest, when being
39、prepared for those tests. The pipe should be left under pressurefor a time period not less than recommended by the manufac-turer for cooling in the field prior to disturbing the joint. Saddlejoint specimens destined for mechanical/destructive type testssuch as impact as in 5.4 or crush tests as in 9
40、.4, or specimensconditioned for cold temperature joining as in 8.1.1, may bemade on unpressured pipe specimens.9. Test Methods9.1 Minimum Hydraulic Burst Pressure Test:9.1.1 Select four fittings at random and prepare specimensin accordance with Section 8. From the four specimens,condition two specim
41、ens each in accordance with 8.1.1 and8.1.2.9.1.2 Test the specimens in accordance with Test MethodD1599.9.1.3 Failure of the fitting or joint shall constitute specimenfailure.9.1.4 Failure of any one of the four specimens shall consti-tute failure of the test. Failure of one of the four specimenstes
42、ted is cause for retest of four additional specimens, joined atthe failed specimens joining temperature. Failure of any ofthese four additional specimens constitutes a failure of the test.9.2 Sustained Pressure Test:9.2.1 Select four fittings at random and prepare specimensin accordance with Section
43、 8 of this specification. From thefour specimens, condition two specimens each in accordancewith 8.1.1 and 8.1.2.9.2.2 Test the specimens in accordance with Test MethodD1598. All tests shall be conducted at 80 6 2C. Theassemblies are to be subjected to pipe fiber stresses of 1450 psi(10.0 MPa) for 1
44、70 h. Joint specimens shall not fail withinthese time periods. Any failures within these time periods mustbe of the pipe, independent of the fitting or joint and must beof a“ brittle” type pipe failure, not “ductile.” If ductile pipefailures occur, reduce the pressure of the test and repeat until170
45、-h results or pipe brittle failures are achieved.9.2.3 Failure of the fitting or joint shall constitute specimenfailure.9.2.4 Failure of any one of the four specimens shall consti-tute failure of the test. Failure of one of the four specimenstested is cause for retest of four additional specimens, j
46、oined atthe failed-specimens-joining temperature. Failure of any ofthese four additional specimens constitutes a failure of the test.9.3 Tensile Strength Test:9.3.1 Select four fittings at random and prepare specimensin accordance with Section 8 with the exception that it ispermissible, on pipe size
47、s above 4 in. (102 mm) IPS, if limitsof tensile machine will not allow 25 % elongation with pipespecimens of three-pipe diameters, to test with free pipelengths of 20 in. (304-mm) minimum. From the fourspecimens, condition two specimens each in accordance with8.1.1 and 8.1.2.9.3.2 Test the specimens
48、 using the apparatus of Test MethodD638. Test at a pull rate of 0.20 in. (5.0 mm) per min, 625 %.9.3.3 Failure of the fitting or joint as defined in 5.3, shallconstitute specimen failure. Failure of any one of the fourspecimens shall constitute failure of the test. Failure of one ofthe four specimen
49、s tested is cause for retest of four additionalspecimens, joined at the failed specimens joining temperature.Failure of any of these four additional specimens constitutes afailure of the test.9.4 Joint Integrity TestsIllustrations of joint crush tests forsocket type joints and saddles are offered in 9.4.1 and 9.4.2 astest methods that are useful as an evaluation of bondingstrength between the pipe and fitting. Alternately, the fusionevaluation test (FET) offered in 9.4.3 and 9.4.4 may be used inlieu of the crush test. Similar test evaluations as specified in the
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