ASTM F1055-98(2006)
(Specification)Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene Pipe and Tubing
Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene Pipe and Tubing
ABSTRACT
This specification covers electrofusion-type polyethylene fittings for outside diameter controlled polyethylene pipe and tubing. Specimens shall be conditioned prior to joining at the minimum or maximum pipe temperature allowable for fusion. The fittings shall be subjected to several tests to determine conformance to minimum hydraulic burst pressure, sustained pressure, tensile strength, impact resistance, and joint integrity requirements. Fusion evaluation test for fitting failure and evaluation for voids shall also be conducted.
SCOPE
1.1 This specification covers electrofusion polyethylene fittings for use with outside diameter-controlled polyethylene pipe, covered by Specifications D 2447, D 2513, D 2737, D 3035, and F 714. Requirements for materials, workmanship, and testing performance are included. Where applicable in this specification "pipe" shall mean "pipe" or "tubing."
1.2 The values stated in inch-pound and centigrade temperature units are to be regarded as standard. The values given in parentheses are for information only.
The following safety hazards caveat pertains only to the test method portion, Section , 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation: F1055 – 98 (Reapproved 2006)
Standard Specification for
Electrofusion Type Polyethylene Fittings for Outside
Diameter Controlled Polyethylene Pipe and Tubing
This standard is issued under the fixed designation F1055; 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.
1. Scope D2122 Test Method for Determining Dimensions of Ther-
moplastic Pipe and Fittings
1.1 This specification covers electrofusion polyethylene fit-
D2447 Specification for Polyethylene (PE) Plastic Pipe,
tings for use with outside diameter-controlled polyethylene
Schedules 40 and 80, Based on Outside Diameter
pipe,coveredbySpecificationsD2447,D2513,D2737,D3035,
D2513 Specification for Thermoplastic Gas Pressure Pipe,
and F714. Requirements for materials, workmanship, and
Tubing, and Fittings
testing performance are included. Where applicable in this
D2737 Specification for Polyethylene (PE) Plastic Tubing
specification “pipe” shall mean “pipe” or “tubing.”
D3035 Specification for Polyethylene (PE) Plastic Pipe
1.2 Thevaluesstatedininch-poundandcentigradetempera-
(DR-PR) Based on Controlled Outside Diameter
ture units are to be regarded as standard. The values given in
D3350 Specification for Polyethylene Plastics Pipe and
parentheses are for information only.
Fittings Materials
1.3 The following safety hazards caveat pertains only to the
F412 Terminology Relating to Plastic Piping Systems
test method portion, Section 9, of this specification: This
F714 Specification for Polyethylene (PE) Plastic Pipe
standard does not purport to address all of the safety concerns,
(SDR-PR) Based on Outside Diameter
if any, associated with its use. It is the responsibility of the user
F905 Practice for Qualification of Polyethylene Saddle-
of this standard to establish appropriate safety and health
Fused Joints
practices and determine the applicability of regulatory limita-
tions prior to use.
3. Terminology
2. Referenced Documents 3.1 Definitions—Definitions are in accordance with Termi-
nology F412, and abbreviations are in accordance with Termi-
2.1 ASTM Standards:
nology D1600, unless otherwise specified.
D618 Practice for Conditioning Plastics for Testing
3.2 Definitions of Terms Specific to This Standard:
D638 Test Method for Tensile Properties of Plastics
3.2.1 electrofusion—a heat fusion joining process where the
D1248 Specification for Polyethylene Plastics Extrusion
heat source is an integral part of the fitting, such that when
Materials for Wire and Cable
electric current is applied, heat is produced that melts and joins
D1598 Test Method for Time-to-Failure of Plastic Pipe
the plastics.
Under Constant Internal Pressure
3.2.2 fusion interface—surface in the heat fusion process
D1599 TestMethodforResistancetoShort-TimeHydraulic
where the plastic materials of the products being joined bond
Pressure of Plastic Pipe, Tubing, and Fittings
together.
D1600 Terminology for Abbreviated Terms Relating to
3.2.3 fusion zone length—totallengthofthemeltedmaterial
Plastics
in the fitting cross-section under evaluation.
4. Materials and Manufacture
This specification is under the jurisdiction ofASTM Committee F17 on Plastic
4.1 This specification covers fittings made from polyethyl-
Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.
ene compounds as defined in Specifications D1248 or D3350.
Current edition approved March 1, 2006. Published March 2006. Originally
´1
4.2 Rework Material—Clean rework polyethylene material
approved in 1987. Last previous edition approved in 1998 as F1055 – 98 . DOI:
10.1520/F1055-98R06.
of the same resin, free of any wire or contaminants generated
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
from the fitting manufacturer’s own production, may be used
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
by the same manufacturer, as long as the fittings produced
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. conform to the requirements of this specification.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F1055 – 98 (2006)
4.3 Heating Mechanism—The heat mechanism shall be of controlled PE pipes such as those listed in Specifications
materials not detrimental to the performance of the fitting or D2447, D2513, D2737, D3035, and F714, such that the joints
the pipe to which it is intended to be joined. will satisfy the performance requirements in Section 5.
6.2 Becauseofthevaryingdesignsforelectrofusionfittings,
5. Performance Requirements
the actual spread of dimensions may be quite different from
5.1 The following requirements are for electrofusion joints
manufacturer to manufacturer. A table of dimensions and
that have been joined using the manufacturer’s recommended tolerances encompassing these differences would be meaning-
joining procedures. These requirements must be met by each
less and without value and, therefore, is omitted from this
electrofusion joint design, on each size and type of pipe specification.
material for which the manufacturer recommends use of his
6.3 The manufacturer shall furnish to the user the electrical
fitting. Any revisions to the electrofusion joint design or
resistance, critical dimensions, and tolerances of his fittings.
processing by the manufacturer after the initial testing requires
This information must include at least the following dimen-
retesting to ensure these requirements can still be met. Fittings
sions and tolerances:
intended for use in the distribution of natural gas or liquid
6.3.1 Coupling inside diameter,
petroleumgasshallalsomeettherequirementsofSpecification
6.3.2 Temperature joining limits, and
D2513. 6.3.3 Operating pressure of the fitting.
5.1.1 It is not required that each configuration of a fitting be
NOTE 2—There are other items that fall beyond the scope of this
tested to meet all of these qualifications (that is, 2 in. main
specification which would be of interest to the user for proper application
saddle joint with multiple outlet configurations offered) as long
of the fittings and is recommended as additional information to be
as the electrofusion joint design is not altered in the configu-
furnished. A few of these are: (1) maximum pipe out of round allowed at
ration differences. joint area; (2) minimum/maximum pipe SDR capability of the fitting, and
(3) for saddles intended for use on a live main, the maximum allowable
NOTE 1—It is permissible when accomplishing these tests, to do so on
line pressure when making the joint.
the highest and lowest dimension ratio of the same pipe material. If in
those tests all performance requirements are met, all dimension ratios
7. Workmanship, Finish, andAppearance
between those tested may be considered as having met the requirements.
7.1 The manufacture of these fittings shall be in accordance
These tests do not have to cover the full range of dimension ratios
with good commercial practice so as to produce fittings
available, only the dimension ratio range on which the manufacturer
meeting the requirements of this specification.
recommends his fitting be used.
7.2 The fittings shall be homogeneous throughout, except
5.2 Pressure Requirements:
where a heating coil or electrical connectors are incorporated,
5.2.1 Minimum Hydraulic Burst Pressure— The minimum
and free of cracks, holes, foreign inclusions, or injurious
hydraulic burst pressure of the test specimen shall not be less
defects such as gouges, dents, cuts, etc. The fittings shall be as
than that required to produce 2520 psi (17.4 MPa) fiber stress
uniform as commercially practicable in opacity, density, and
in the pipe being used in the test when tested in accordance
other physical properties.Any heating coils, connecting cables,
with 9.1. The test equipment, procedures, and failures defini-
connectors, and related electrical power source shall be de-
tions shall be as specified in Test Method D1599.
signed to prevent electrical shock to the user.
5.2.2 Sustained Pressure—The fitting and fused joint shall
not fail when tested in accordance with 9.2.
8. Specimen Preparation
5.3 Tensile Strength Requirements (Coupling Type Joints
Only)—Thefittingorthepipetofittingjointmadeonpipeshall 8.1 Conditioning:
8.1.1 Unless otherwise specified, condition the specimens
notfailwhentestedinaccordancewith9.3.Specimensshallbe
subjected to a tensile stress that causes the pipe to yield to an (pipe and fittings) prior to joining at the minimum pipe
temperature allowable for fusion as recommended by the
elongation no less than 25 % or causes the pipe to break
manufacturer, for not less than 16 h and make the fusion joint
outside the joint area.Tensile tests must be made on specimens
at that temperature for those tests where conditioning is
as joined, not on straps cut from the specimen. Yielding must
required.
bemeasuredonlyinthepipe,independentofthefittingorjoint.
8.1.2 Unless otherwise specified, condition the specimens
5.4 Impact Resistance (Saddle Type Joints Only)—The joint
(pipe and fittings) prior to joining at the maximum pipe
madeonthespecimenshallnotfailwhenimpactedwithaforce
temperature allowable for fusion as recommended by the
sufficient to break the body or other portion of the specimen.
manufacturer, for not less than 16 h and make the fusion joint
Tests of 500 ft·lbf or higher impact with no failures noted shall
at that temperature for those tests where conditioning is
be considered as a “pass” impact test. The device for testing
required.
and the methods shall be as defined in Practice F905.
5.5 Joint Integrity Tests—(Couplings and Saddle Type 8.2 Test Conditions—Conduct the tests at the Standard
Laboratory Temperature of 23 6 2°C (73.4 6 3.6°F) unless
Joints)—The joint made on the specimen shall meet the
requirements in 9.4 and 9.5 of this specification, when tested in otherwise specified.
8.3 Preparation of Specimens for Testing:
accordance with 9.4.
8.3.1 Prepare test specimens so that the minimum length of
6. Dimensions, Mass, and Permissible Variations
unreinforced pipe on one side of any fitting is equal to three
6.1 Dimension and tolerances of electrofusion fittings must times the diameter of the pipe, but in no case less than 12 in.
be such that heat fusion is possible to outside diameter (OD) (304 mm). It is permissible to test multiple fittings together
F1055 – 98 (2006)
provided they are separated by a minimum distance equal to of tensile machine will not allow 25 % elongation with pipe
three times the diameter of the pipe, but in no case less than 12 specimens of three-pipe diameters, to test with free pipe
in. (304 mm). lengths of 20 in. (304-mm) minimum. From the four speci-
8.3.2 Fuse all fitting outlets with the appropriate size pipe in mens, condition two specimens each in accordance with 8.1.1
accordance with the manufacturer’s recommended procedures. and 8.1.2.
8.3.3 All saddle fusion joint specimens conditioned as in
9.3.2 Test the specimens using the apparatus ofTest Method
8.1.2 and destined for quick burst testing as in 9.1 and
D638. Test at a pull rate of 0.20 in. (5.0 mm) per min, 625 %.
sustained pressure testing as in 9.2, are to be joined with the
9.3.3 Failure of the fitting or joint as defined in 5.3, shall
pipe at no less than maximum allowable operating pressure of
constitute specimen failure.
the pipe system or fitting, whichever is lowest, when being
9.3.4 Failure of any one of the four specimens shall consti-
prepared for those tests. The pipe should be left under pressure
tute failure of the test. Failure of one of the four specimens
for a time period not less than recommended by the manufac-
tested is cause for retest of four additional specimens, joined at
turerforcoolinginthefieldpriortodisturbingthejoint.Saddle
the failed specimens joining temperature. Failure of any of
joint specimens destined for mechanical/destructive type tests
these four additional specimens constitutes a failure of the test.
such as impact as in 5.4 or crush tests as in 9.4, or specimens
9.4 JointIntegrityTests—Illustrationsofjointcrushtestsfor
conditioned for cold temperature joining as in 8.1.1, may be
socket type joints and saddles are offered in 9.4.1 and 9.4.2 as
made on unpressured pipe specimens.
test methods that are useful as an evaluation of bonding
strength between the pipe and fitting. Alternately, the fusion
9. Test Methods
evaluation test (FET) offered in 9.4.3 and 9.4.4 may be used in
9.1 Minimum Hydraulic Burst Pressure Test:
lieuofthecrushtest.Similartestevaluationsasspecifiedinthe
9.1.1 Select four fittings at random and prepare specimens
contract or purchase order and as agreed upon by the purchaser
in accordance with Section 8. From the four specimens,
and manufacturer are of equal value in performing such
condition two specimens each in accordance with 8.1.1 and
evaluations and may be substituted with such agreement.
8.1.2.
9.4.1 Joint Crush Test:
9.1.2 Test the specimens in accordance with Test Method
9.4.1.1 Select four fittings at random and prepare specimens
D1599.
in accordance with Section 8. From the four specimens,
9.1.3 Failure of the fitting or joint shall constitute specimen
condition two specimens each in accordance with 8.1.1 and
failure.
8.1.2 (Note 3).
9.1.4 Failure of any one of the four specimens shall consti-
tute failure of the test. Failure of one of the four specimens
NOTE 3—It is permissible to utilize in joint integrity testing, specimens
tested is cause for retest of four additional specimens, joined at from the quick-burst tests conducted in 9.1 after visually determining that
neither the joint area nor the pipe segment to be crushed was a part of the
the failed specimens joining temperature. Failure of any of
failure mode in the quick-burst test.
these four additional specimens constitutes a failure of the test.
9.2 Sustained Pressure Test:
9.4.1.2 Slit socket joints longitudinally as illustrated in
9.2.1 Select four fittings at random and prepare specimens
Fig. 1 as near the centerline of the pipe as practical. Pipe
in accordance with Section 8 of this specification. From the
lengths extending out of the socket may be cut back to a
four specimens, condition two specimens each in accordance
minimum of 3 in. (76 mm) for ease of placing in a vise.
with 8.1.1 and 8.1.2.
9.4.1.3 Place each specimen half in a vise such that the
9.2.2 Test the specimens in accordance with Test Method
outermostwireofcoiliswithin1.250 60.125in.(32 63mm)
D159
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.