ASTM F1948-20

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:F1948 −20 An American National Standard
Standard Specification for
Metallic Mechanical Fittings for Use on Outside Diameter
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Controlled Thermoplastic Gas Distribution Pipe and Tubing
This standard is issued under the fixed designation F1948; 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.
1. Scope* mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers requirements and test methods
forthequalificationofmetallicmechanicalfittingsforusewith
2. Referenced Documents
outside diameter controlled thermoplastic gas distribution pipe
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2.1 ASTM Standards:
and tubing as specified in Specification D2513, F2785,or
D638Test Method for Tensile Properties of Plastics
F2945.
D1598Test Method for Time-to-Failure of Plastic Pipe
1.2 The test methods described are not intended to be
Under Constant Internal Pressure
routine quality control tests.
D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
1.3 Thisspecificationcoversthetypesofmechanicalfittings tics
described in 3.3. D2513Specification for Polyethylene (PE) Gas Pressure
Pipe, Tubing, and Fittings
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
E515Practice for Leaks Using Bubble EmissionTechniques
as standard. The values given in parentheses are mathematical
F412Terminology Relating to Plastic Piping Systems
conversions to SI units that are provided for information only
F1588Test Method for Constant Tensile Load Joint Test
and are not considered standard.
(CTLJT)
1.5 The text of this standard references notes and footnotes
F2785Specification for Polyamide 12 Gas Pressure Pipe,
whichprovideexplanatorymaterial.Thesenotesandfootnotes
Tubing, and Fittings
(excluding those in tables and figures), shall not be considered
F2897Specification for Tracking and Traceability Encoding
as requirements of the standard.
System of Natural Gas Distribution Components (Pipe,
1.6 The following safety hazards caveat pertains only to the
Tubing, Fittings, Valves, and Appurtenances)
test method portion, Section 7, of this specification. This F2945Specification for Polyamide 11 Gas Pressure Pipe,
standard does not purport to address all of the safety concerns,
Tubing, and Fittings
if any, associated with its use. It is the responsibility of the user 2.2 ASME Standard:
of this standard to establish appropriate safety, health, and
ASME B 31.8Gas Transmission and Distribution Piping
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environmental practices and determine the applicability of Systems
regulatory limitations prior to use.
2.3 Federal Specification:
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1.7 This international standard was developed in accor- OPS Part 192 Title 49,Code of Federal Regulations
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Development of International Standards, Guides and Recom-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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Available from American Society of Mechanical Engineers (ASME), ASME
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This specification is under the jurisdiction ofASTM Committee F17 on Plastic International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
Piping Systems, and is the direct responsibility of Subcommittee F17.60 on Gas. www.asme.org.
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Current edition approved Feb. 1, 2020. Published February 2020. Originally Available from the Office of Pipeline Safety, Research and Special Programs
published in 1999. Last previous edition approved in 2019 as F1948–19. DOI: Administration, U.S. Department of Transportation, 400 Seventh Street, S.W.,
10.1520/F1948-20 Washington, DC, 20006-1301.
*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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F1948−20
2.4 Other Document: 3.2.7 mechanical fitting, n—fitting for making a mechanical
PPI TR-4Recommended Hydrostatic Strengths and Design joint to provide for pressure integrity, leak tightness, and,
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Stresses for Thermoplastic Pipe and Fitting Compounds dependingoncategory,asdefinedinthisstandard,resistanceto
end loads.
3. Terminology
3.3 Types of Mechanical Fittings:
3.1 Definitions are in accordance with Definitions F412
3.3.1 clamped i
...