ASTM F1948-99ae1
(Specification)Standard Specification for Metallic Mechanical Fittings for Use on Outside Diameter Controlled Thermoplastic Gas Distribution Pipe and Tubing
Standard Specification for Metallic Mechanical Fittings for Use on Outside Diameter Controlled Thermoplastic Gas Distribution Pipe and Tubing
SCOPE
1.1 This specification describes requirements and test methods for the qualification of metallic mechanical fittings for use with outside diameter controlled thermoplastic gas distribution pipe and tubing as specified in Specification D 2513.
1.2 The test methods described in this specification are not intended to be routine quality control tests.
1.3 This specification covers the types of mechanical fittings described in 3.2.1.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for informational purposes only.
1.5 The following safety hazards caveat pertains only to the test method portion, Section 7, 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 and health practices and determine the applicability of regulatory limitations prior to use.
1.6 The text of this standard references notes and footnotes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this specification.
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An American National Standard
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Designation: F 1948 – 99a
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 F 1948; 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 (e) indicates an editorial change since the last revision or reapproval.
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e NOTE—Section 10 was editorially updated in December 2002.
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1. Scope Thermoplastic Pipe Materials
F 412 Definitions of Terms Relating to Plastic Piping Sys-
1.1 This specification covers requirements and test methods
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tems
for the qualification of metallic mechanical fittings for use with
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F 1588 Test Method for Constant Tensile Load Test
outside diameter controlled thermoplastic gas distribution pipe
2.2 ASME Standard:
and tubing as specified in Specification D 2513.
ASME B 31.8 Gas Transmission and Distribution Piping
1.2 The test methods described are not intended to be
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Systems
routine quality control tests.
2.3 Federal Specification:
1.3 Thisspecificationcoversthetypesofmechanicalfittings
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OPS Part 192 Title 49, Code of Federal Regulations
described in 3.3.
2.4 Other Document:
1.4 The values stated in inch-pound units are to be regarded
PPI TR-4 Recommended Hydrostatic Strengths and Design
as standard. The values given in parentheses are mathematical
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Stresses for Thermoplastic Pipe and Fitting Compounds
conversions to SI units which are provided for information
only and not considered standard.
3. Terminology
1.5 The following safety hazards caveat pertains only to the
3.1 Definitions are in accordance with Definitions F 412
test method portion, Section 7, of this specification. This
unless otherwise specified. Abbreviations are in accordance
standard may involve hazardous material, operations and
with Abbreviations D 1600 unless otherwise specified.
equipment. This standard does not purport to address all of the
3.1.1 Thegasindustryterminologyusedinthisspecification
safety concerns, if any, associated with its use. It is the
is in accordance with ASME/ANSI B31.8 or United States
responsibility of the user of this standard to establish appro-
CFR 49 Part 192 unless otherwise indicated.
priate safety and health practices and determine the applica-
3.1.2 The term “pipe” used herein refers to both pipe and
bility of regulatory limitations prior to use.
tubing unless specifically stated otherwise. The term “fitting”
1.6 The text of this standard references notes and footnotes
refers to a mechanical connecting device as described in 3.2.5
which provide explanatory material. These notes and footnotes
and 3.2.7.
(excluding those in tables and figures), shall not be considered
3.2 Definitions:
as requirements of the standard.
3.2.1 Category 1 mechanical fitting, n—fitting for assem-
2. Referenced Documents bling pipe, which includes a compression zone(s) to provide
for pressure integrity, leak tightness, and resistance to end
2.1 ASTM Standards:
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loads sufficient to cause no less than 25 % elongation of the
D 638 Test Method for Tensile Property of Plastics
piping, as described in this standard.
D 1598 Test Methods for Time-To-Failure of Plastic Pipe
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3.2.2 Category 2 mechanical fitting, n—fitting for assem-
Under Constant Internal Pressure
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bling pipe, which includes a compression zone(s) to provide
D 1600 Abbreviations of Terms Relating to Plastics
for pressure integrity and leak tightness; Category 2 fittings do
D 2513 Specification for Thermoplastic Gas Pressure Pipe,
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not provide for resistance to end loads.
Tubing and Fittings
D 2837 Method for Obtaining Hydrostatic Design Basis for
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Available from the American Society of Mechanical Engineers, Three Park
Ave., New York, NY, 10016-5990.
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ThisspecificationisunderthejurisdictionofASTMCommitteeF-17onPlastic Available from the Office of Pipeline Safety, Research and Special Programs
Piping Systems, and is the direct responsibility of Subcommittee F17.60 on Gas. Administration, U.S. Department of Transportation, 400 Seventh Street, S.W.,
Current edition approved April 10, 1999. Published July 1999. Washington, DC, 20006-1301.
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Annual Book of ASTM Standards, Vol 08.01. Available from the Plastics Pipe Institute, 1801 K Street N.W., Suite 600K,
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Annual Book of ASTM Standards, Vol 08.04. Washington, DC, 20006-1301.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F 1948 – 99a
NOTE 1—Materials in long-term contact with natural gas of line quality
3.2.3 Category 3 mechanical fitting, n—fitting for assem-
and LP gas vapor should b
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