ASTM F1055-2013 Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing《.pdf

1、Designation:F105512F105513 An American National Standard Standard Specication for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing 1 This standard is issued under the xed designation F1055; the number immediately

2、 following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval. 1. Scope* 1.1 This spec

3、ication covers electrofusion polyethylene ttings for use with outside diameter-controlled polyethylene pipe, coveredbySpecicationsD2513,D2737,D3035,andF714andcrosslinkedpolyethylene(PEX),coveredbySpecicationF2788. Requirements for materials, workmanship, and testing performance are included. All req

4、uirements for joining PE electrofusion ttings to PE pipe shall also apply to joining PE electrofusion ttings to PEX pipe. Where applicable in this specication pipe shall mean pipe or tubing. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are

5、 mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 The following safety hazards caveat pertains only to the test method portion, Section 9, of this specication:This standard does not purport to address all of the safety concerns, if any,

6、 associated with its use. It is the responsibility of the user of this standardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse. 2. Referenced Documents 2.1 ASTM Standards: 2 D638Test Method for Tensile Properties of Plastics D1598Test Metho

7、d for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure D1599Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings D1600Terminology for Abbreviated Terms Relating to Plastics D2513Specication for Polyethylene (PE) Gas Pressure Pipe, Tubing,

8、and Fittings D2737Specication for Polyethylene (PE) Plastic Tubing D3035Specication for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter D3350Specication for Polyethylene Plastics Pipe and Fittings Materials F412Terminology Relating to Plastic Piping Systems F714Specicatio

9、n for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter F905Practice for Qualication of Polyethylene Saddle-Fused Joints F1473Test Method for Notch Tensile Test to Measure the Resistance to Slow Crack Growth of Polyethylene Pipes and Resins F2788Specication for Metric-sized Crosslinke

10、d Polyethylene (PEX) Pipe 2.2 PPI Standards: 3 PPI TR-3Policies and Procedures for Developing Hydrostatic Design Basis (HDB), Pressure Design Basis (PDB), Strength Design Basis (SDB), and Minimum Required Strength (MRS) Rating for Thermoplastic Piping Materials or Pipe PPI TR-4HDB/SDB/PDB/MRS Listed

11、 Materials, PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis (SDB), and Minimum Required Strength (MRS) Rating for Thermoplastic Piping Materials or Pipe 3. Terminology 3.1 DenitionsDenitions are in accordance with Terminology F412, and abbreviations are in accordance with Termin

12、ology D1600, unless otherwise specied. 1 This specication is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings. Current edition approved Dec. 15, 2012Feb. 1, 2013. Published January 2013February 2013. Originally

13、 approved in 1987. Last previous edition approved in 20112012 as F105511.F105512. DOI: 10.1520/F1055-12.10.1520/F1055-13. 2 ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatserviceastm.org.ForAnnualBookofASTMStandards volume information, refer to the standard

14、s Document Summary page on the ASTM website. 3 Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825, Irving, TX 75062, http:/www.plasticpipe.org. This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have b

15、een made to the previous version. Because it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version of the standard as published by ASTM is to be considered the official docu

16、ment. *ASummary of Changes section appears at the end of this standard Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States 13.2 Denitions of Terms Specic to This Standard: 3.2.1 electrofusionaheatfusionjoiningprocesswheretheheatsourceisan

17、integralpartofthetting,suchthatwhenelectric current is applied, heat is produced that melts and joins the plastics. 3.2.2 fusioninterfacesurfaceintheheatfusionprocesswheretheplasticmaterialsoftheproductsbeingjoinedbondtogether. 3.2.3 fusion zone lengthtotal length of the melted material in the tting

18、 cross-section under evaluation. 4. Materials and Manufacture 4.1 This specication covers ttings made from polyethylene compounds as dened in Specication D3350. 4.1.1 Polyethylenematerialcompoundssuitableforuseinthemanufactureofelectrofusionttingsunderthisspecicationshall meetSpecicationD3350andshal

19、lmeetSpecicationD3350classicationandpropertyrequirementsshowninTable1andshall have PPI TR-4 HDB and HDS listings at 73F (23C) and HDB listings at 140F (60C). 4.2 Rework MaterialClean rework polyethylene material of the same resin, free of any wire or contaminants generated from the tting manufacture

20、rs own production, may be used by the same manufacturer, as long as the ttings produced conform to the requirements of this specication. 4.3 HeatingMechanismTheheatmechanismshallbeofmaterialsanddesignnotdetrimentaltotheperformanceofthetting or the pipe to which it is intended to be joined. Heating m

21、echanisms, such as wires or materials other than polyethylene, shall not exit the tting in an area exposed to internal pressure. Heat mechanisms shall be of a design that ensures that wire terminations are toward the outer edges of the fusion zone length and away from the pressure containing area. E

22、xamples of acceptable and unacceptable wire terminations are shown in Figs. 1-5. 5. Performance Requirements 5.1 The following requirements are for electrofusion joints that have been joined using the manufacturers recommended joining procedures.These requirements must be met by each electrofusion j

23、oint design, on each size and type of pipe material for which the manufacturer recommends use of his tting. Any revisions to the electrofusion joint design or processing by the manufacturer after the initial testing requires retesting to ensure these requirements can still be met. Fittings intended

24、for use in the distribution of natural gas or liquid petroleum gas shall also meet the requirements of Specication D2513. 5.1.1 It is not required that each conguration of a tting be tested to meet all of these qualications (that is, 2 in. main saddle joint with multiple outlet congurations offered)

25、 as long as the electrofusion joint design is not altered in the conguration differences. NOTE 1It is permissible when accomplishing these tests, to do so on the highest and lowest dimension ratio of the same pipe material. If in those tests all performance requirements are met, all dimension ratios

26、 between those tested may be considered as having met the requirements. These tests do not have to cover the full range of dimension ratios available, only the dimension ratio range on which the manufacturer recommends his tting be used. 5.2 Pressure Requirements: 5.2.1 Minimum Hydraulic Burst Press

27、ureThe tting and fused joint shall not fail when tested in accordance with 9.1. The minimum hydraulic burst pressure of the test specimen shall not be less than that required to produce the minimum ber stress inthepipeasrequiredbythecontrollingpipestandardforthetypeofpipeusedinthetest.Innocaseshallt

28、heminimumhydraulic burst pressure be less than that required to produce 2520 psi (17.4 MPa) ber stress in the pipe for medium density PE (density cell 2) and 2900 psi (20 MPa) ber stress in the pipe for high density PE (density cell 3 or 4) test specimens when tested in accordance with 9.1. The test

29、 equipment, procedures, and failures denitions shall be as specied in Test Method D1599. 5.2.2 Sustained PressureThe tting and fused joint shall not fail when tested in accordance with 9.2. The test pressure, minimum time-to-failure, and test temperature shall be as required by the controlling pipe

30、standard for the type of pipe used in TABLE 1 Specication D3350 Classication Requirements of Polyethylene Electrofusion Fitting Materials Physical Properties Cell Classication and Properties for Polyethylene Materials PE2708 PE4710 Density 2 4 Melt Index 3 or 4 4 Flexural Modulus $4 $5 Tensile Stren

31、gth $3 $4 Slow Crack Growth Re- sistance (F1473) 7 7 Hydrostatic Strength Classication 3 4 Color and UV Stabilizer C or E C or E HDB at 73F (23C), psi (MPa) 1250 (8.62) 1600 (11.03) F105513 2the test. If a pipe standard is not specied, or does not contain test requirements, the test pressure, minimu

32、m time-to-failure and test temperature shall be as shown in Table 2. 5.3 Tensile Strength Requirements (Coupling Type Joints Only)The tting or the pipe to tting joint made on pipe shall not fail when tested in accordance with 9.3. Specimens shall be subjected to a tensile stress that causes the pipe

33、 to yield to an elongation no less than 25% or causes the pipe to break outside the joint area.Tensile tests must be made on specimens as joined, not on straps cut from the specimen. Yielding must be measured only in the pipe, independent of the tting or joint. 5.4 Impact Resistance (Saddle Type Joi

34、nts Only)The joint made on the specimen shall not fail when impacted with a force sufficient to break the body or other portion of the specimen. Tests of 500 ftlbf or higher impact with no failures noted shall be considered as a pass impact test. The device for testing and the methods shall be as de

35、ned in Practice F905. FIG. 1Correct Wire Termination CouplingSingle Coil FIG. 2Correct Wire Termination CouplingDual Coil FIG. 3Correct Wire TerminationSaddle Fitting F105513 35.5 Joint Integrity Tests(Couplings and Saddle Type Joints)The joint made on the specimen shall meet the requirements in 9.4

36、 and 9.5 of this specication, when tested in accordance with 9.4. 6. Dimensions, Mass, and Permissible Variations 6.1 Dimension and tolerances of electrofusion ttings must be such that heat fusion is possible to outside diameter (OD) controlled PE pipes such as those listed in Specications D2513, D2

37、737, D3035, and F714 and PEX pipes listed in Specication F2788, such that the joints will satisfy the performance requirements in Section 5. 6.2 Because of the varying designs for electrofusion ttings, the actual spread of dimensions may be quite different from manufacturer to manufacturer. A table

38、of dimensions and tolerances encompassing these differences would be meaningless and without value and, therefore, is omitted from this specication. 6.3 The manufacturer shall furnish to the user the electrical resistance, critical dimensions, and tolerances of his ttings. This information must incl

39、ude at least the following dimensions and tolerances: 6.3.1 Coupling inside diameter, 6.3.2 Temperature joining limits, and 6.3.3 Operating pressure of the tting. NOTE2Thereareotheritemsthatfallbeyondthescopeofthisspecicationwhichwouldbeofinteresttotheuserforproperapplicationofthettings and is recom

40、mended as additional information to be furnished. A few of these are: (1) maximum pipe out of round allowed at joint area; (2) minimum/maximum pipe SDR capability of the tting, and (3) for saddles intended for use on a live main, the maximum allowable line pressure when making the joint. FIG. 4Incor

41、rect Wire Termination CouplingDual Coil FIG. 5Incorrect Wire Termination SaddleSingle Coil F105513 47. Workmanship, Finish, andAppearance 7.1 The manufacture of these ttings shall be in accordance with good commercial practice so as to produce ttings meeting the requirements of this specication. 7.2

42、 Thettingsshallbehomogeneousthroughout,exceptwhereaheatingcoilorelectricalconnectorsareincorporated,andfree of cracks, holes, foreign inclusions, or injurious defects such as gouges, dents, cuts, etc. The ttings shall be as uniform as commercially practicable in opacity, density, and other physical

43、properties.Any heating coils, connecting cables, connectors, and related electrical power source shall be designed to prevent electrical shock to the user. 8. Specimen Preparation 8.1 Conditioning: 8.1.1 Unless otherwise specied, condition the specimens (pipe and ttings) prior to joining at the mini

44、mum pipe temperature allowable for fusion as recommended by the manufacturer, for not less than 16 h and make the fusion joint at that temperature for those tests where conditioning is required. 8.1.2 Unless otherwise specied, condition the specimens (pipe and ttings) prior to joining at the maximum

45、 pipe temperature allowable for fusion as recommended by the manufacturer, for not less than 16 h and make the fusion joint at that temperature for those tests where conditioning is required. 8.2 Test ConditionsConduct the tests at the Standard Laboratory Temperature of 236 2C (73.46 3.6F) unless ot

46、herwise specied. 8.3 Preparation of Specimens for Testing: 8.3.1 Prepare test specimens so that the minimum length of unreinforced pipe on one side of any tting is equal to three times the diameter of the pipe, but in no case less than 12 in. (304 mm). It is permissible to test multiple ttings toget

47、her provided they are separated by a minimum distance equal to three times the diameter of the pipe, but in no case less than 12 in. (304 mm). 8.3.2 Fuse all tting outlets with the appropriate size pipe in accordance with the manufacturers recommended procedures. 8.3.3 All saddle fusion joint specim

48、ens conditioned as in 8.1.2 and destined for quick burst testing as in 9.1 and sustained pressure testing as in 9.2, are to be joined with the pipe at no less than maximum allowable operating pressure of the pipe system or tting, whichever is lowest, when being prepared for those tests. The pipe sho

49、uld be left under pressure for a time period not less than recommended by the manufacturer for cooling in the eld prior to disturbing the joint. Saddle joint specimens destined formechanical/destructivetypetestssuchasimpactasin5.4orcrushtestsasin9.4,orspecimensconditionedforcoldtemperature joining as in 8.1.1, may be made on unpressured pipe specimens. 9. Test Methods 9.1 Minimum Hydraulic Burst Pressure Test: TABLE 2 Supplemental Sustained Pressure Test