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ASTM F3534/F3534M-22

(Specification)

Standard Specification for MRS-Rated Metric- and Inch-Sized Crosslinked Polyethylene (PEX) Pressure Pipe for Gas Distribution Applications

Standard Specification for MRS-Rated Metric- and Inch-Sized Crosslinked Polyethylene (PEX) Pressure Pipe for Gas Distribution Applications

SCOPE
1.1 This specification covers crosslinked polyethylene (PEX) pipe that is outside diameter controlled in metric pipe sizes (DN 16 to 1000) and inch pipe sizes (NPS 3 to 54), and pressure rated (see Appendix X1) using the MRS rating system. This Specification is intended for PEX pipe made by various processes, as long as the PEX pipe made by that process meets all the requirements of this Specification. Included are requirements and test methods for material, workmanship, UV protection, dimensions, hydrostatic sustained pressure, stabilizer functionality, bent-pipe hydrostatic pressure, chemical resistance, minimum operating temperature, degree of crosslinking, squeeze-off, and hydrostatic burst pressure. Requirements for pipe markings are also given. The pipe covered by this specification is intended for natural gas distribution.  
1.2 This specification also includes requirements for qualifying joints made using polyethylene electrofusion fittings (such as Specification F3373) and PEX pipe. Fittings to be used with PEX pipe manufactured to this specification are in Specification F2829/F2829M. Installation considerations are in X3.2.
Note 1: NPS fittings should not be used for DN sized pipe, and DN sized fittings should not be used for NPS pipe.  
1.3 The text of this specification references notes, footnotes, and appendixes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) should not be considered as requirements of the specification.  
1.4 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4.1 For consistency with ISO 9080, MRS values are only in MPa and degrees Centigrade for conversion to the pipe material designation code (for example PEX pipe with an MRS of 8 MPa is called a PEX 80.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Jan-2022
ICS
23.040.20 - Plastics pipes
Technical Committee
F17 - Plastic Piping Systems
Drafting Committee
F17.60 - Gas
Current Stage
Ref Project

Relations

Refers
ASTM D1603-20 - Standard Test Method for Carbon Black Content in Olefin Plastics
Effective Date
01-Feb-2020
Refers
ASTM D4218-20 - Standard Test Method for Determination of Carbon Black Content in Polyethylene Compounds by the Muffle-Furnace Technique
Effective Date
01-Feb-2020
Refers
ASTM F412-20 - Standard Terminology Relating to Plastic Piping Systems
Effective Date
01-Apr-2020

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ASTM F3534/F3534M-22 - Standard Specification for MRS-Rated Metric- and Inch-Sized Crosslinked Polyethylene (PEX) Pressure Pipe for Gas Distribution ApplicationsASTM F3534/F3534M-22 - Standard Specification for MRS-Rated Metric- and Inch-Sized Crosslinked Polyethylene (PEX) Pressure Pipe for Gas Distribution Applications
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ASTM F3534/F3534M-22 - Standard Specification for MRS-Rated Metric- and Inch-Sized Crosslinked Polyethylene (PEX) Pressure Pipe for Gas Distribution Applications
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F3534/F3534M −22 An American National Standard
Standard Specification for
MRS-Rated Metric- and Inch-Sized Crosslinked Polyethylene
1
(PEX) Pressure Pipe for Gas Distribution Applications
ThisstandardisissuedunderthefixeddesignationF3534/F3534M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 materialdesignationcode(forexamplePEXpipewithanMRS
of 8 MPa is called a PEX 80.
1.1 This specification covers crosslinked polyethylene
1.5 This standard does not purport to address all of the
(PEX) pipe that is outside diameter controlled in metric pipe
safety concerns, if any, associated with its use. It is the
sizes (DN 16 to 1000) and inch pipe sizes (NPS 3 to 54), and
responsibility of the user of this standard to establish appro-
pressure rated (see Appendix X1) using the MRS rating
priate safety, health, and environmental practices and deter-
system. This Specification is intended for PEX pipe made by
mine the applicability of regulatory limitations prior to use.
various processes, as long as the PEX pipe made by that
1.6 This international standard was developed in accor-
process meets all the requirements of this Specification. In-
dance with internationally recognized principles on standard-
cluded are requirements and test methods for material,
ization established in the Decision on Principles for the
workmanship, UV protection, dimensions, hydrostatic sus-
Development of International Standards, Guides and Recom-
tained pressure, stabilizer functionality, bent-pipe hydrostatic
mendations issued by the World Trade Organization Technical
pressure,chemicalresistance,minimumoperatingtemperature,
Barriers to Trade (TBT) Committee.
degree of crosslinking, squeeze-off, and hydrostatic burst
pressure. Requirements for pipe markings are also given. The
2. Referenced Documents
pipe covered by this specification is intended for natural gas
2
distribution.
2.1 ASTM Standards:
D543Practices for Evaluating the Resistance of Plastics to
1.2 This specification also includes requirements for quali-
Chemical Reagents
fying joints made using polyethylene electrofusion fittings
D618Practice for Conditioning Plastics for Testing
(such as Specification F3373) and PEX pipe. Fittings to be
D792Test Methods for Density and Specific Gravity (Rela-
used with PEX pipe manufactured to this specification are in
tive Density) of Plastics by Displacement
SpecificationF2829/F2829M.Installationconsiderationsarein
D1505Test Method for Density of Plastics by the Density-
X3.2.
Gradient Technique
NOTE 1—NPS fittings should not be used for DN sized pipe, and DN
D1598Test Method for Time-to-Failure of Plastic Pipe
sized fittings should not be used for NPS pipe.
Under Constant Internal Pressure
1.3 Thetextofthisspecificationreferencesnotes,footnotes,
D1599Test Method for Resistance to Short-Time Hydraulic
and appendixes, which provide explanatory material. These
Pressure of Plastic Pipe, Tubing, and Fittings
notes and footnotes (excluding those in tables and figures)
D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
should not be considered as requirements of the specification.
tics
1.4 Units—The values stated in either SI units or inch-
D1603Test Method for Carbon Black Content in Olefin
pound units are to be regarded separately as standard. The
Plastics
values stated in each system are not necessarily exact equiva-
D2122Test Method for Determining Dimensions of Ther-
lents; therefore, to ensure conformance with the standard, each
moplastic Pipe and Fittings
system shall be used independently of the other, and values
D2290Test Method for Apparent Hoop Tensile Strength of
from the two systems shall not be combined.
Plastic or Reinforced Plastic Pipe
1.4.1 For consistency with ISO 9080, MRS values are only
D2565Practice for Xenon-Arc Exposure of Plastics In-
in MPa and degrees Centigrade for conversion to the pipe
tended for Outdoor Applications
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 F17.60 on Gas. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Feb. 1, 2022. Published March 2022. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
F3534_F3534M–22 the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box
...

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SIGNIFICANCE AND USE
5.1 Many important properties of crosslinked ethylene plastics vary with the gel content. Hence, determination of the gel content provides a basis for controlling production processes and a means of establishing the quality of finished products.  
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SCOPE
1.1 The gel content of pipe and tubing produced from crosslinked polyethylene plastics as described in Specification F876 and other pipe or tubing standards is determined by extracting with solvents such as xylenes. A test method for quantitative determination of gel content is described herein. The method is applicable to PEX pipe and tubing of all densities, including those containing fillers, and provides correction for the inert fillers present in some of those compounds.  
1.2 Continuous extraction (see definition in Section 3) is used in this method to test the gel content of crosslinked polyethylene specimens. Continuous extraction when used for testing gel content has the advantages of decreased cost of testing, increased accuracy and consistency of results, and decreased test time. This is because extraction with a pure solvent is more efficient than extraction with a partially saturated solvent.  
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5.1 This test method is useful to measure the slow crack growth resistance of molded plaques of polyethylene materials at accelerated conditions such as 80 °C, 2.4 MPa stress, and with a sharp notch.  
5.2 The testing time or time to failure depends on the following test parameters: temperature; stress; notch depth; and specimen geometry. Increasing temperature, stress, and notch depth decrease the time to failure. Material parameters, not controlled by the laboratory, that could impact the test results (time to failure) are: pigment (color or carbon black) and the carrier resin for the pigment, or both. Thus, in reporting the test time or time to failure, all the conditions of the test shall be specified.  
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SCOPE
1.1 This test method determines the resistance of polyethylene materials to slow crack growth under conditions specified within.
Note 1: This test method is known as PENT (Pennsylvania Notch Test) test.  
1.2 The standard test is performed at 80 °C and at 2.4 MPa, but it shall be acceptable to conduct tests at a temperature below 80 °C and with other stresses low enough to preclude ductile failure and thereby eventually induce brittle type of failure. The standard test is conducted in an air environment; however, it shall be acceptable to immerse test specimens in an alternate environment such as water or a water/detergent solution, or other liquid or a different environment such as an inert gas to evaluate slow crack growth performance in different environments. Generally, polyethylenes will ultimately fail in a brittle manner by slow crack growth at 80 °C if the stress is at or below 2.4 MPa
Note 2: When testing in environments other than air, it is recommended to consider maintaining the efficacy of the test media (for example, a detergent solution) to minimize any effect of aging.  
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1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
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SCOPE
1.1 This specification covers requirements and test methods for material dimensions and tolerances, hydrostatic burst strength, chemical resistance, and impact resistance of PEX pipe and tubing for use in fuel gas mains and services for direct burial applications.  
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1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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This specification covers the requirements for smooth-wall perforated and nonperforated poly(vinyl chloride) (PVC) plastic pipe and couplings for use in subsurface drainage systems of highways, airports, and similar applications. Two classes (or pipe stiffness) are included and designated as PS 28 and PS 46. The pipe stiffness, impact resistance, pipe flattening, and solvent cement joint tightness shall be tested to meet the requirements prescribed.
SCOPE
1.1 This specification covers the requirements for smooth-wall perforated and nonperforated poly(vinyl chloride) (PVC) plastic pipe and couplings for use in subsurface drainage systems of highways, airports, and similar applications in nominal sizes of 4, 6, and 8 in. and in pipe stiffnesses (PS) that are designated as Type PS 28 and Type PS 46 in accordance with its minimum pipe stiffness.  
1.2 Molded fittings for use with highway underdrain pipe are in accordance with Specification D3034. For convenience, some of these fittings are reproduced in Annex A1.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
Note 1: Type PS 28 and Type PS 46 indicate “pipe stiffness” of 28 and 46, respectively, as outlined in 11.1.
Note 2: Pipe and fittings should be installed in accordance with Practice D2321, or applicable state or local specifications.  
1.4 Units—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.  
1.5 The following safety hazards caveat pertains only to the test methods portion, Section 11, of this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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