Standard Specification for Polyamide 11 Gas Pressure Pipe, Tubing, and Fittings

ABSTRACT
This specification covers requirements and test methods for the characterization of polyamide 11 pipe, tubing, and fittings for use in fuel gas piping. The pipe and fittings covered by this specification are intended for use in the transport of fuel gases. This specification does not cover threaded pipe. The polyamide 11 material used to make pipe and fittings shall be virgin or reworked material and shall have a Plastics Pipe Institute (PPI) long-term hydrostatic design stress and hydrostatic design basis rating as determined per PPI TR3 and PPI TR4. This specification deals with requirements for materials, requirements for pipe and fittings, test methods, marking, and quality Assurance.
SCOPE
1.1 This specification covers requirements and test methods for the characterization of polyamide 11 pipe, tubing, and fittings for use in fuel gas piping. The pipe and fittings covered by this specification are intended for use in the transport of fuel gases.  
1.1.1 This specification does not cover threaded pipe. Generic fusion guidelines are given in Appendix X1. Design considerations are discussed in Appendix X2. In-plant quality control programs are specified in Annex A1.  
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 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.  
1.4 The following is an index of the annexes and appendixes in this specification:    
Annexes  
Subject  
Annex A1  
In-Plant Quality Control for sizes up to 12 in.  
Annex A2  
PA-11 Butt Fusion Fittings  
Appendixes  
Subject  
Appendix X1  
Butt Fusion Guidelines for PA-11 Piping  
Appendix X2  
Design Consideration
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 and health practices and determine the applicability of regulatory limitations prior to use.Note 1—Heat fusion joining of PA11 pipe and fittings meeting the requirements of this standard is limited to PA11 pipe and fittings meeting the requirements of this Standard. Heat Fusion joining of PA11 pipe and fittings meeting the requirements of this standard is not allowed to pipes and fittings made from any other thermoplastic materials (for example, PA12, PEs, PVCs, etc.).

General Information

Status
Historical
Publication Date
26-Nov-2012
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM F2945-12a - Standard Specification for Polyamide 11 Gas Pressure Pipe, Tubing, and Fittings
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F2945 −12a
StandardSpecification for
1
Polyamide 11 Gas Pressure Pipe, Tubing, and Fittings
This standard is issued under the fixed designation F2945; the number immediately 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.
Balloted changes were added, and the year date was changed on November 27, 2012.
1. Scope 2. Referenced Documents
2
1.1 This specification covers requirements and test methods 2.1 ASTM Standards:
for the characterization of polyamide 11 pipe, tubing, and D543Practices for Evaluating the Resistance of Plastics to
fittingsforuseinfuelgaspiping.Thepipeandfittingscovered Chemical Reagents
bythisspecificationareintendedforuseinthetransportoffuel D618Practice for Conditioning Plastics for Testing
gases. D638Test Method for Tensile Properties of Plastics
1.1.1 This specification does not cover threaded pipe. Ge- D648Test Method for Deflection Temperature of Plastics
neric fusion guidelines are given in Appendix X1. Design Under Flexural Load in the Edgewise Position
considerations are discussed in Appendix X2. In-plant quality D789Test Methods for Determination of Solution Viscosi-
control programs are specified in Annex A1. ties of Polyamide (PA)
D790Test Methods for Flexural Properties of Unreinforced
1.2 Thetextofthisspecificationreferencesnotes,footnotes,
and Reinforced Plastics and Electrical Insulating Materi-
and appendixes which provide explanatory material. These
als
notesandfootnotes(excludingthoseintablesandfigures)shall
D792Test Methods for Density and Specific Gravity (Rela-
not be considered as requirements of the specification.
tive Density) of Plastics by Displacement
1.3 Thevaluesstatedininch-poundunitsaretoberegarded
D1598Test Method for Time-to-Failure of Plastic Pipe
as standard. The values given in parentheses are mathematical
Under Constant Internal Pressure
conversions to SI units that are provided for information only
D1599Test Method for Resistance to Short-Time Hydraulic
and are not considered standard.
Pressure of Plastic Pipe, Tubing, and Fittings
1.4 Thefollowingisanindexoftheannexesandappendixes D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
tics
in this specification:
3
D1898Practice for Sampling of Plastics (Withdrawn 1998)
Annexes Subject
Annex A1 In-Plant Quality Control for sizes up to 12 in. D2122Test Method for Determining Dimensions of Ther-
Annex A2 PA-11 Butt Fusion Fittings
moplastic Pipe and Fittings
Appendixes Subject
D2290Test Method for Apparent Hoop Tensile Strength of
Appendix X1 Butt Fusion Guidelines for PA-11 Piping
Appendix X2 Design Consideration
Plastic or Reinforced Plastic Pipe
D2774PracticeforUndergroundInstallationofThermoplas-
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the tic Pressure Piping
D2837Test Method for Obtaining Hydrostatic Design Basis
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- forThermoplasticPipeMaterialsorPressureDesignBasis
for Thermoplastic Pipe Products
bility of regulatory limitations prior to use.
D3418Test Method for Transition Temperatures and En-
NOTE 1—Heat fusion joining of PA11 pipe and fittings meeting the
thalpies of Fusion and Crystallization of Polymers by
requirements of this standard is limited to PA11 pipe and fittings meeting
Differential Scanning Calorimetry
the requirements of this Standard. Heat Fusion joining of PA11 pipe and
fittings meeting the requirements of this standard is not allowed to pipes D4066Classification System for Nylon Injection and Extru-
and fittings made from any other thermoplastic materials (for example,
sion Materials (PA)
PA12, PEs, PVCs, etc.).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This test method is under the jurisdiction ofASTM Committee F17 on Plastic contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Piping Systems and is the direct responsibility of Subcommittee F17.60 on Gas. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Nov. 27, 2012. Published December 2012. Orginally the ASTM website.
3
approved in 2012. Last previous edition approved in 2012 as F2945–12. DOI: The last approved version of this historical standard is referenced on
10.1520/D2945–12A. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F2945−12a
F412Terminology Relating to Plastic Piping Systems ISO 22621 Part 1Plastics
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