ASTM F2785-09e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
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Designation: F2785 – 09
Standard Specification for
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Polyamide 12 Gas Pressure Pipe, Tubing, and Fittings
This standard is issued under the fixed designation F2785; 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.
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´ NOTE—Table 1 was editorially revised in March 2010.
1. Scope 2. Referenced Documents
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1.1 This specification covers requirements and test methods 2.1 ASTM Standards:
for the characterization of polyamide 12 pipe, tubing, and D543 Practices for Evaluating the Resistance of Plastics to
fittings for use in fuel gas mains and services for direct burial Chemical Reagents
and reliner applications. The pipe and fittings covered by this D618 Practice for Conditioning Plastics for Testing
specification are intended for use in the distribution of natural D638 Test Method for Tensile Properties of Plastics
gas. D789 Test Methods for Determination of Solution Viscosi-
1.1.1 This specification does not cover threaded pipe. Ge- ties of Polyamide (PA)
neric fusion guidelines are given in Appendix X1. Design D1598 Test Method for Time-to-Failure of Plastic Pipe
considerations are discussed in Appendix X2. In-plant quality Under Constant Internal Pressure
control programs are specified in Annex A1. D1599 TestMethodforResistancetoShort-TimeHydraulic
1.2 Thetextofthisspecificationreferencesnotes,footnotes, Pressure of Plastic Pipe, Tubing, and Fittings
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and appendixes which provide explanatory material. These D1898 Practice for Sampling of Plastics
notesandfootnotes(excludingthoseintablesandfigures)shall D1600 Terminology for Abbreviated Terms Relating to
not be considered as requirements of the specification. Plastics
1.3 The values stated in inch-pound units are to be regarded D2122 Test Method for Determining Dimensions of Ther-
as standard. The values given in parentheses are mathematical moplastic Pipe and Fittings
conversions to SI units that are provided for information only D2774 Practice for Underground Installation of Thermo-
and are not considered standard. plastic Pressure Piping
1.4 This standard does not purport to address all of the D2290 Test Method for Apparent Hoop Tensile Strength of
safety concerns, if any, associated with its use. It is the Plastic or Reinforced Plastic Pipe by Split Disk Method
responsibility of the user of this standard to establish appro- D2837 TestMethodforObtainingHydrostaticDesignBasis
priate safety and health practices and determine the applica- forThermoplastic Pipe Materials or Pressure Design Basis
bility of regulatory limitations prior to use. for Thermoplastic Pipe Products
D4066 Classification System for Nylon Injection and Ex-
NOTE 1—Pipe and fittings utilizing heat fusion joining techniques
trusion Materials (PA)
produced from compounds meeting the requirements of Group 3, Class 2,
D6779 Classification System for Polyamide Molding and
andGrade3(PA323orPA11)areintendedforusewithpipemanufactured
from compounds meeting the requirements of Group 3, class 2 and Grade Extrusion Materials (PA)
3. Pipe and fittings utilizing heat fusion joining techniques produced from
F412 Terminology Relating to Plastic Piping Systems
compoundsmeetingtherequirementsofGroup4,Class2andGrade3(PA
F1025 Guide for Selection and Use of Full-Encirclement-
423 or PA12) are intended for use with pipe manufactured from com-
Type Band Clamps for Reinforcement or Repair of Punc-
pounds meeting the requirements of Group 4, Class 2 and Grade 3.As per
tures or Holes in Polyethylene Gas Pressure Pipe
the recommendations of the respective resin manufacturers, no cross
fusion between PA 323 (PA11) and PA 423 (PA12) compounds is
permitted.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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This test method is under the jurisdiction of ASTM Committee F17 on Plastic Standards volume information, refer to the standard’s Document Summary page on
Piping Systems and is the direct responsibility of Subcommittee F17.60 on Gas. the ASTM website.
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Current edition approved Aug. 1, 2009. Published September 2009. DOI: Withdrawn. The last approved version of this historical standard is referenced
10.1520/F2785-09E01.
on www.astm.org.
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F2785 – 09
F1473 Test Method for Notch Tensile Test to Measure the 3. Terminology
Resistance to Slow Crack Growth of Polyethylene Pipes
3.1 Definitions—Definitions are in accordance
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