1、Designation:F2788/F2788M13An American National StandardStandard Specification forMetric and Inch-sized Crosslinked Polyethylene(PEX)Pipe1This standard is issued under the fixed designation F2788/F2788M;the number immediately following the designation indicates the yearof original adoption or,in the
2、case of revision,the year of last revision.A number 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 specification covers crosslinked polyethylene(PEX)pipe that is outside diameter control
3、led in metric pipesizes 16 mm to 100 mm and inch pipe sizes 3 in.to 54 in.,made in nominal pipe dimension ratios,and pressure rated forwater at three temperatures(see Appendix X1).Included arerequirements and test methods for material,workmanship,dimensions,burst pressure,hydrostatic sustained press
4、ure,excessive temperature-pressure,environmental stress cracking,stabilizer functionality,bent-pipe hydrostatic pressure,oxida-tive stability in potable chlorinated water,and degree ofcrosslinking.Requirements for pipe markings are also given.The pipe covered by this specification is intended for bu
5、riedpressure piping applications(such as,industrial and general-purpose pipelines,potable water pipelines,fire extinguishingpipelines).This specification also includes carbon black re-quirements for PEX pipe used for aboveground pressure pipingapplications.1.2 The text of this specification referenc
6、es notes,footnotes,and appendixes,which provide explanatory material.Thesenotes and footnotes(excluding those in tables and figures)shallnot be considered as requirements of the specification.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The va
7、lues stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.NOTE1Metric sized(SI units)pipe should only be joined withcorresponding metric-sized fittings and i
8、nch-sized pipe should only bejoined with corresponding inch-sized fittings.Inch sized fittings shouldnot be used for metric sized pipe,and metric sized fittings should not beused for inch-sized pipe.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its us
9、e.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD792 Test Methods for Dens
10、ity and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD1599 Test Method for Resistance to Short-Time HydraulicPressure of Pl
11、astic Pipe,Tubing,and FittingsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1898 Practice for Sampling of Plastics(Withdrawn 1998)3D2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD2765 Test Methods for Determination of Gel Content andSwell Ratio of Cros
12、slinked Ethylene PlasticsD2837 Test Method for Obtaining Hydrostatic Design Basisfor Thermoplastic Pipe Materials or Pressure Design Basisfor Thermoplastic Pipe ProductsD3895 Test Method for Oxidative-Induction Time of Poly-olefins by Differential Scanning CalorimetryF412 Terminology Relating to Pla
13、stic Piping SystemsF2023 Test Method for Evaluating the Oxidative Resistanceof Crosslinked Polyethylene(PEX)Tubing and Systemsto Hot Chlorinated Water1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.26 o
14、n OlefinBased Pipe.Current edition approved Nov.1,2013.Published December 2013.Originallyapproved in 2009.Last previous edition approved in 2011 as F278811.DOI:10.1520/F2788_F2788M-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.or
15、g.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100
16、Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.2 ANSI Standard:4B36.10 Standards Dimensions of Steel Pipe(IPS)2.3 Federal Standard:5FED-STD-123 Marking for Shipment(Civil Agencies)2.4 Military Standard:5MIL-STD-129 Marking for Shipment and Storage2.5 NSF Standard:6NSF/ANSI 14 for Plastic Piping Components and RelatedMaterials2.6 ISO Standards:7ISO 1167 Thermoplastics pipes,fittings and assemblies forthe conveyance of fluids Determination of the resis-tance to inte
