ASTM F2788-11
(Specification)Standard Specification for Metric-sized Crosslinked Polyethylene (PEX) Pipe
Standard Specification for Metric-sized Crosslinked Polyethylene (PEX) Pipe
ABSTRACT
This specification details the physical and performance requirements, and the corresponding test methods, for the evaluation of crosslinked polyethylene (PEX) pipes that are outside diameter controlled, made in nominal pipe dimension ratios, and pressure rated for water at different temperatures. Crosslinked PEX pipes covered here shall be made from polyethylene compounds that have been crosslinked by peroxides, Azo compounds, or silane compounds in extrusion, or by electron beam after extrusion, and are primarily defined by means of three criteria, namely, nominal density, degree of crosslinking, and long-term strength tests. Sampled pipe specimens shall be tested for conformance with workmanship, dimension (out-of-roundness, outside diameter, and wall thickness), density, hydrostatic burst pressure, hydrostatic sustained pressure strength, excessive temperature-pressure capacity, environmental stress cracking, stabilizer functionality, bent-pipe hydrostatic sustained pressure strength, oxidative stability in potable chlorinated water, and degree of crosslinking requirements.
SCOPE
1.1 This specification covers metric-sized crosslinked polyethylene (PEX) pipe that is outside diameter controlled, made in nominal pipe dimension ratios, and pressure rated for water at three temperatures (see Appendix X1). Included are requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, excessive temperature-pressure, environmental stress cracking, stabilizer functionality, bent-pipe hydrostatic pressure, oxidative stability in potable chlorinated water, and degree of crosslinking. Requirements for pipe markings are also given. The pipe covered by this specification is intended for buried pressure piping applications (such as, industrial and general-purpose pipelines, potable water pipelines, fire – extinguishing pipelines). This specification also includes carbon black requirements for PEX pipe used for aboveground pressure piping applications.
1.2 The text of this specification references notes, footnotes, and appendixes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.3 Except for dimensions, the values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. For dimensions, the values stated in SI units are to be regarded as standard. The values given in parentheses for nominal sizes are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
Note 1—Metric sized (SI units) pipe should only be joined with corresponding metric sized fittings. Inch sized fittings should not be used for metric sized pipe.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:F2788 −11 AnAmerican National Standard
Standard Specification for
1
Metric-sized Crosslinked Polyethylene (PEX) Pipe
This standard is issued under the fixed designation F2788; the number immediately following the designation indicates the year of
original adoption or, in the 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* 1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This specification covers metric-sized crosslinked poly-
responsibility of the user of this standard to establish appro-
ethylene (PEX) pipe that is outside diameter controlled, made
priate safety and health practices and determine the applica-
in nominal pipe dimension ratios, and pressure rated for water
bility of regulatory limitations prior to use.
at three temperatures (see Appendix X1). Included are require-
ments and test methods for material, workmanship,
2. Referenced Documents
dimensions, burst pressure, hydrostatic sustained pressure,
2
2.1 ASTM Standards:
excessive temperature-pressure, environmental stress cracking,
D618 Practice for Conditioning Plastics for Testing
stabilizer functionality, bent-pipe hydrostatic pressure, oxida-
D792 Test Methods for Density and Specific Gravity (Rela-
tive stability in potable chlorinated water, and degree of
tive Density) of Plastics by Displacement
crosslinking. Requirements for pipe markings are also given.
D1505 Test Method for Density of Plastics by the Density-
The pipe covered by this specification is intended for buried
Gradient Technique
pressure piping applications (such as, industrial and general-
D1598 Test Method for Time-to-Failure of Plastic Pipe
purpose pipelines, potable water pipelines, fire – extinguishing
Under Constant Internal Pressure
pipelines). This specification also includes carbon black re-
D1599 Test Method for Resistance to Short-Time Hydraulic
quirementsforPEXpipeusedforabovegroundpressurepiping
Pressure of Plastic Pipe, Tubing, and Fittings
applications.
D1600 TerminologyforAbbreviatedTermsRelatingtoPlas-
1.2 Thetextofthisspecificationreferencesnotes,footnotes,
tics
3
and appendixes, which provide explanatory material. These
D1898 Practice for Sampling of Plastics (Withdrawn 1998)
notesandfootnotes(excludingthoseintablesandfigures)shall
D2122 Test Method for Determining Dimensions of Ther-
not be considered as requirements of the specification.
moplastic Pipe and Fittings
1.3 Except for dimensions, the values stated in inch-pound D2765 Test Methods for Determination of Gel Content and
units are to be regarded as standard. The values given in
Swell Ratio of Crosslinked Ethylene Plastics
parentheses are mathematical conversions to SI units that are D2837 Test Method for Obtaining Hydrostatic Design Basis
provided for information only and are not considered standard.
forThermoplasticPipeMaterialsorPressureDesignBasis
For dimensions, the values stated in SI units are to be regarded for Thermoplastic Pipe Products
as standard. The values given in parentheses for nominal sizes
D3895 Test Method for Oxidative-Induction Time of Poly-
are mathematical conversions to inch-pound units that are olefins by Differential Scanning Calorimetry
provided for information only and are not considered standard. F412 Terminology Relating to Plastic Piping Systems
F2023 Test Method for Evaluating the Oxidative Resistance
NOTE 1—Metric sized (SI units) pipe should only be joined with
of Crosslinked Polyethylene (PEX) Tubing and Systems
corresponding metric sized fittings. Inch sized fittings should not be used
to Hot Chlorinated Water
for metric sized pipe.
1 2
This specification is under the jurisdiction ofASTM Committee F17 on Plastic For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Piping Systems and is the direct responsibility of Subcommittee F17.26 on Olefin contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Based Pipe. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2011. Published May 2011. Originally the ASTM website.
3
approved in 2009. Last previous edition approved in 2009 as F2788–09. DOI: The last approved version of this historical standard is referenced on
10.1520/F2788-11. www.astm.org.
*A Summary 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
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F2788−11
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2.2 ANSI Standard: hydrostatic design basis (HDB) times the design factor (DF)
B36.10 Standards Dimensions of Steel Pipe (IPS) for water. Fo
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been 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 document.
An American National Standard
Designation:F2788–09 Designation: F2788 – 11
Standard Specification for
1
Metric-sized Crosslinked Polyethylene (PEX) Pipe
This standard is issued under the fixed designation F2788; the number immediately following the designation indicates the year of
original adoption or, in the 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
1.1This specification covers crosslinked polyethylene (PEX) pipe that is outside diameter controlled, made in nominal pipe
dimension ratios, and pressure rated for water at three temperatures (see *
1.1 This specification covers metric-sized crosslinked polyethylene (PEX) pipe that is outside diameter controlled, made in
nominal pipe dimension ratios, and pressure rated for water at three temperatures (see Appendix X1). Included are requirements
and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, excessive temperature
pressure, excessive temperature-pressure, environmental stress cracking, stabilizer functionality, bent-pipe hydrostatic pressure,
oxidative stability in potable chlorinated water, and degree of crosslinking. Requirements for pipe markings are also given. ).
Included are requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure,
excessive temperature-pressure, environmental stress cracking, stabilizer functionality, bent-pipe hydrostatic pressure, oxidative
stability in potable chlorinated water, and degree of crosslinking. Requirements for pipe markings are also given.The pipe covered
by this specification is intended for buried pressure piping applications (such as, industrial and general-purpose pipelines, potable
water pipelines, fire – extinguishing pipelines). This specification also includes carbon black requirements for PEX pipe used for
aboveground pressure piping applications.
1.2 The text of this specification references notes, footnotes, and appendixes, which provide explanatory material. These notes
and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.3 Except for dimensions, the values stated in inch-pound units are to be regarded as standard.The values given in parentheses
are mathematical conversions to SI units that are provided for information only and are not considered standard. For dimensions,
the values stated in SI units are to be regarded as standard. The values given in parentheses for nominal sizes are mathematical
conversions to inch-pound units that are provided for information only and are not considered standard.
NOTE 1—Metric sized (SI units) pipe should only be joined with corresponding metric sized fittings. Inch sized fittings should not be used for metric
sized pipe.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D1505 Test Method for Density of Plastics by the Density-Gradient Technique
D1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure
D1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings
D1600 Terminology for Abbreviated Terms Relating to Plastics
3
D1898 Practice for Sampling of Plastics
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
D2765 Test Methods for Determination of Gel Content and Swell Ratio of Crosslinked Ethylene Plastics
1
This test method specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.26 on
Olefin Based Pipe.
Current edition approved Aug. 1, 2009. Published August 2009. DOI: 10.1520/F2788-09.
Current edition approved May 1, 2011. Published May 2011. Originally approved in 2009. Last previous edition approved in 2009 as F2788–09. DOI: 10.1520/F2788-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
...
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