ASTM D3262-20

Standard Specification for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Sewer Pipe

ABSTRACT
This specification covers machine-made glass-fiber-reinforced thermosetting-resin (fiberglass) pipes such as reinforced thermosetting-resin pipe (RTRP) and reinforced polymer mortar pipe (RPMP; natural polymers not included) for use in gravity-flow systems for conveying sanitary sewage, storm water, and some industrial wastes. Material covered is of various type (RPMP/RTRP polyester or epoxy), liners (reinforced or non-reinforced thermoset liner, thermoplastic liner, or none), grades (polyester resin surface layer-reinforced or non-reinforced, polyester resin and sand surface layer-non-reinforced, epoxy resin surface layer-reinforced or non-reinforced, or none), and pipe stiffness. The pipe shall be manufactured as a composite structure consisting of resin, reinforcements, colorants, fillers, and other materials, free from all defects such as indentations, delaminations, bubbles, pinholes, cracks, pits, blisters, foreign inclusions, and resin-starved areas that are detrimental to the strength and serviceability of the pipe. The pipe shall also be uniform in color, opacity, density, and other physical properties, with the inside surface of the pipe free of bulges, dents, ridges, and other defects. The pipes shall be joined together using a joining system that will provide for fluid tightness in conformity with the service requirement and with the pipe joint surfaces free of dents, gouges, and other surface irregularities. Compression, tension, and long-term chemical tests as well as tests for dimensions, stiffness, and joint tightness shall be performed and shall conform to the requirements specified.
SCOPE
1.1 This specification covers machine-made fiberglass pipe, 8 in. (200 mm) through 156 in. (4000 mm), intended for use in gravity-flow systems for conveying sanitary sewage, storm water, and some industrial wastes. Both glass-fiber-reinforced thermosetting-resin pipe (RTRP) and glass-fiber-reinforced polymer mortar pipe (RPMP) are fiberglass pipes.  
Note 1: For the purposes of this standard, polymer does not include natural polymers.  
1.2 Although this specification is suited primarily for pipes to be installed in buried applications, it is acceptable to apply it to the extent applicable for other installations such as, but not limited to, jacking, tunnel lining and sliplining rehabilitation of existing pipelines.  
Note 2: There is no known ISO equivalent to this standard.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.4 The following safety hazards caveat pertains only to the test method portion, Section 8, 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

General Information

• Status: Published
• Publication Date: 29-Feb-2020
• ICS: 23.040.20 - Plastics pipes
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.23 - Reinforced Thermosetting Resin Piping Systems and Chemical Equipment

Relations

• Replaces: ASTM D3262-16 - Standard Specification for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Sewer Pipe
• Effective Date: 01-Mar-2020
• Refers: ASTM D883-24 - Standard Terminology Relating to Plastics
• Effective Date: 01-Feb-2024
• Refers: ASTM D883-23 - Standard Terminology Relating to Plastics
• Effective Date: 01-Nov-2023
• Refers: ASTM F412-20 - Standard Terminology Relating to Plastic Piping Systems
• Effective Date: 01-Apr-2020
• Refers: ASTM D883-20 - Standard Terminology Relating to Plastics
• Effective Date: 01-Jan-2020
• Refers: ASTM D883-19c - Standard Terminology Relating to Plastics
• Effective Date: 01-Aug-2019
• Refers: ASTM D883-19a - Standard Terminology Relating to Plastics
• Effective Date: 15-Apr-2019
• Refers: ASTM D4161-14(2019) - Standard Specification for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe Joints Using Flexible Elastomeric Seals
• Effective Date: 01-Apr-2019
• Refers: ASTM D883-19 - Standard Terminology Relating to Plastics
• Effective Date: 01-Feb-2019
• Refers: ASTM F412-19 - Standard Terminology Relating to Plastic Piping Systems
• Effective Date: 01-Jan-2019
• Refers: ASTM D883-18a - Standard Terminology Relating to Plastics
• Effective Date: 01-Dec-2018
• Refers: ASTM D883-18 - Standard Terminology Relating to Plastics
• Effective Date: 01-Nov-2018
• Refers: ASTM D2584-18 - Standard Test Method for Ignition Loss of Cured Reinforced Resins
• Effective Date: 15-Sep-2018
• Refers: ASTM D1600-18 - Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)
• Effective Date: 01-Jan-2018
• Refers: ASTM D883-17 - Standard Terminology Relating to Plastics
• Effective Date: 15-Aug-2017

Overview

ASTM D3262-20: Standard Specification for "Fiberglass" (Glass-Fiber-Reinforced Thermosetting-Resin) Sewer Pipe establishes requirements for machine-made fiberglass pipes used in gravity-flow sanitary sewer, stormwater, and select industrial waste applications. The specification encompasses both reinforced thermosetting-resin pipe (RTRP) and reinforced polymer mortar pipe (RPMP), including a range of types, liners, grades, and pipe stiffnesses. Its main focus is to ensure product consistency, quality, and performance for fiberglass sewer pipes utilized in buried and other non-pressurized infrastructure installations.

Key Topics

Covered Pipe Types and Applications

• Reinforced Thermosetting-Resin Pipe (RTRP): Fiber-reinforced pipes using thermosetting resins such as polyester or epoxy, without aggregates.
• Reinforced Polymer Mortar Pipe (RPMP): Similar to RTRP but with aggregate included, enhancing pipe strength and specific characteristics.

Material and Quality Requirements

• Composite Structure: Pipes must consist of resin, glass fiber reinforcements, fillers, colorants, and other materials, forming a defect-free, uniform construction.
• Liners and Grades: Options include reinforced or non-reinforced thermoset liners, thermoplastic liners, or no liner, and different grades depending on resins and surface layers.
• Pipe Stiffness: Specified by four stiffness classes (9, 18, 36, 72 psi), ensuring the pipe withstands deforming environments.

Dimensional Tolerances and Physical Properties

• Nominal diameters: Ranging from 8 in. (200 mm) to 156 in. (4000 mm).
• Wall Thickness and Squareness: Minimum values and tolerances for wall thickness, diameter, and end squareness for reliable performance.
• Surface Quality: Internal and external surfaces must be free from defects such as dents, bulges, or exposed fiber to maintain system integrity.

Joining and Joint Integrity

• Types of Joints: Includes unrestrained and restrained joints-such as bell-and-spigot, mechanical coupling, butt, flanged, and threaded joints-with elastomeric gaskets conforming to ASTM F477 where applicable.
• Joint Performance: All joints must ensure fluid-tight seals and meet specified laboratory performance requirements, even after angular deflection or under external pressure.

Performance and Testing Methods

• Long-Term Performance: Pipes must pass chemical resistance tests and demonstrate durability against strain corrosion, specifically under exposure to sulfuric acid over a 50-year projected lifespan.
• Stiffness and Beam Strength: Mechanical tests for stiffness, beam load, and tensile strength confirm that pipes can withstand operational and installation stresses.
• Production and Quality Control: Sampling and routine tests for each batch, plus annual or agreed-upon control tests, are required to ensure compliance.

Applications

The ASTM D3262-20 standard is particularly relevant to:

• Municipal Sewer Systems: For gravity-flow collection and transportation of sanitary sewage and stormwater.
• Industrial Waste Conveyance: Transporting compatible non-pressurized industrial effluents where chemical resistance and long-term durability are critical.
• Buried and Trenchless Installation: Suited primarily for underground applications, but also applicable in jacking, tunnel lining, and sliplining for pipeline rehabilitation.
• Civil Infrastructure: Used in large-diameter, corrosion-resistant pipeline systems in new installations and repairs.

The robust mechanical and chemical standards make fiberglass pipe an attractive choice for projects demanding longevity, leak tightness, and reliability in harsh environments.

Related Standards

For comprehensive compliance and best practices, consider the following related standards:

• ASTM D4161: Specifications for fiberglass pipe joints using flexible elastomeric seals.
• ASTM F477: Specifications for elastomeric seals (gaskets) for joining plastic pipe.
• AWWA C950: Glass-Fiber Reinforced Thermosetting Resin Pipe for water supply standards.
• ASTM D2992: Procedures for hydrostatic or pressure design basis for fiberglass pipe.
• ASTM D2412: Methods for determining external loading characteristics of plastic pipe.

These related standards support the full lifecycle performance of glass-fiber-reinforced thermosetting-resin sewer pipes, from design and production to installation and long-term operation.

Keywords: ASTM D3262-20, fiberglass sewer pipe, glass-fiber-reinforced thermosetting resin, sanitary sewage pipe, stormwater pipe, gravity-flow pipe, RPMP, RTRP, pipe stiffness, joint tightness, durable sewer pipe standards

Standards Content (Sample)

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:D3262 −20
Standard Specification for
“Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin)
Sewer Pipe
This standard is issued under the fixed designation D3262; 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 2. Referenced Documents
1.1 This specification covers machine-made fiberglass pipe,
2.1 ASTM Standards:
8 in. (200 mm) through 156 in. (4000 mm), intended for use in
C33 Specification for Concrete Aggregates
gravity-flow systems for conveying sanitary sewage, storm
D638 Test Method for Tensile Properties of Plastics
water, and some industrial wastes. Both glass-fiber-reinforced
D695 Test Method for Compressive Properties of Rigid
thermosetting-resin pipe (RTRP) and glass-fiber-reinforced
Plastics
polymer mortar pipe (RPMP) are fiberglass pipes.
D883 Terminology Relating to Plastics
D1600 Terminology forAbbreviatedTerms Relating to Plas-
NOTE 1—For the purposes of this standard, polymer does not include
tics
natural polymers.
D2412 Test Method for Determination of External Loading
1.2 Although this specification is suited primarily for pipes
Characteristics of Plastic Pipe by Parallel-Plate Loading
to be installed in buried applications, it is acceptable to apply
D2584 Test Method for Ignition Loss of Cured Reinforced
ittotheextentapplicableforotherinstallationssuchas,butnot
Resins
limited to, jacking, tunnel lining and sliplining rehabilitation of
D2992 Practice for Obtaining Hydrostatic or Pressure De-
existing pipelines.
sign Basis for “Fiberglass” (Glass-Fiber-Reinforced
NOTE 2—There is no known ISO equivalent to this standard.
Thermosetting-Resin) Pipe and Fittings
D3567 Practice for Determining Dimensions of “Fiberglass”
1.3 The values stated in inch-pound units are to be regarded
(Glass-Fiber-Reinforced Thermosetting Resin) Pipe and
as the standard. The values given in parentheses are for
Fittings
information only.
D3681 Test Method for Chemical Resistance of “Fiberglass”
1.4 The following safety hazards caveat pertains only to the
(Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a
test method portion, Section 8, of this specification. This
Deflected Condition
standard does not purport to address all of the safety concerns,
D3892 Practice for Packaging/Packing of Plastics
if any, associated with its use. It is the responsibility of the user
D4161 Specification for “Fiberglass” (Glass-Fiber-
of this standard to establish appropriate safety, health, and
Reinforced Thermosetting-Resin) Pipe Joints Using Flex-
environmental practices and determine the applicability of
ible Elastomeric Seals
regulatory limitations prior to use.
F412 Terminology Relating to Plastic Piping Systems
1.5 This international standard was developed in accor-
F477 Specification for Elastomeric Seals (Gaskets) for Join-
dance with internationally recognized principles on standard-
ing Plastic Pipe
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 2.2 AWWA Standard:
mendations issued by the World Trade Organization Technical Standard C-950, Glass-Fiber Reinforced Thermosetting
Barriers to Trade (TBT) Committee. Resin Pipe
1 2
This specification is under the jurisdiction of ASTM Committee D20 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics and is the direct responsibility of Subcommittee D20.23 on Reinforced contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Plastic Piping Systems and Chemical Equipment. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved March 1, 2020. Published March 2020. Originally the ASTM website.
approved in 1973. Last previous edition approved in 2016 as D3262 – 16. DOI: Available fromAmerican Water WorksAssociation (AWWA), 6666 W. Quincy
10.1520/D3262-20. Ave., Denver, CO 80235, http://www.awwa.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3262−20
cially available. The purchaser should determine for himself or consult
3. Terminology
with the manufacturer for the proper type, liner, grade, and stiffness of
3.1 Definitions:
pipe to be used under the installation and operating conditions that will
3.1.1 General—Unless otherwise indicated, definitions are
exist for the project in which pipe is to be used.
in accordance with Terminology D883 or Terminology F412,
4.2 Designation Requirements—Thepipematerialsdesigna-
and abbreviations are in accordance with Terminology D1600.
tion code shall consist of the standard designation, ASTM
3.2 Definitions of Terms Specific to This Standard:
D3262, followed by type, liner, and grade indicated in Arabic
3.2.1 fiberglass pipe—tubular product containing glass fiber
numerals, and pipe stiffness by a capital letter. Table 1 presents
reinforcements embedded in or surrounded by cured thermo-
a summary of the designation requirements. Thus a complete
setting resin.
material code shall consist of ASTM D3262, three numerals,
3.2.1.1 Discussion—The composite structure may contain
and a capital letter.
aggregate, granular, or platlet fillers, thixotropic agents,
NOTE 4—Examples of the designation codes are as follows: (1)ASTM
pigments, or dyes, and thermoplastic or thermosetting liners.
D3262-1-1-3-A for glass–fiber–reinforced aggregate and polyester resin
3.2.2 flexible joint —a joint that is capable of axial displace-
mortar pipe with a reinforced thermoset liner and an unreinforced
ment or angular rotation, or both.
polyester resin and sand surface layer having a minimum pipe stiffness of
9 psi (62 kPa). (2) ASTM D3262-4-2-6-C for glass–fiber–reinforced
3.2.3 liner—a resin layer, with or without filler or
epoxy resin pipe with an unreinforced thermoset liner, no surface layer,
reinforcement, or both, forming the interior surface of the pipe.
having a minimum pipe stiffness of 36 psi (248 kPa).
3.2.4 qualification test—one or more tests used to prove the
NOTE 5—Although the Form and Style for ASTM Standards manual
design of a product. Not a routine quality control test. requires that the type classification be roman numerals, it is recognized
that few companies have stencil-cutting equipment for this style of type,
3.2.5 reinforced polymer mortar pipe (RPMP)—fiberglass
and it is therefore acceptable to mark the product type inArabic numbers.
pipe with aggregate.
3.2.6 reinforced thermosetting resin pipe (RTRP)— 5. Materials and Manufacture
fiberglass pipe without aggregate.
5.1 General—The thermosetting resins, glass fiber
3.2.7 rigid joint— a joint that is not capable of axial
reinforcements, fillers, and other materials, when combined as
displacement or angular rotation.
a composite structure, shall produce piping products that meet
3.2.8 surface layer—a resin layer, with or without filler or the performance requirements of this specification.
reinforcement, or both, applied to the exterior surface of the
5.2 Wall Composition—The basic structural wall composi-
pipe structural wall.
tion shall consist of a thermosetting resin, glass-fiber
reinforcement, and if used, an aggregate filler.
4. Classification
5.2.1 Resin—Athermosetting polyester or epoxy resin, with
4.1 General—This specification covers fiberglass sewer
or without filler.
pipe defined by raw materials in the structural wall (type) and
5.2.2 Reinforcement—A commercial grade of glass fibers
liner, surface layer material (grade), and pipe stiffness. Table 1
compatible with the resin used.
lists the types, liners, grades, and stiffnesses covered.
5.2.3 Aggregate—A siliceous sand conforming to the re-
NOTE 3—All possible combinations of types, liners, grades, and
quirements of Specification C33, except that the requirements
stiffnesses may not be commercially available. It is acceptable to add
additional types, liners, grades, and stiffnesses as they become commer- for gradation shall not apply.
TABLE 1 General Designation Requirements for Fiberglass Sewer Pipe
Desig-
A
nation Property Cell Limits
Order
1Type 1234
glass-fiber-reinforced glass-fiber-resin-reinforced glass-fiber-reinforced glass-fiber-reinforced
B B
thermosetting polyester resin thermosetting polyester resin thermosetting epoxy resin thermosetting epoxy resin
B B
mortar (RPMP polyester ) (RTRP polyester )
mortar (RPMP epoxy) (RTRP epoxy)
2Liner 1234
reinforced thermoset liner non-reinforced thermoset liner thermoplastic liner no liner
3Grade 1234 5 6
B B B
polyester resin polyester resin polyester resin and epoxy resin surface epoxy resin surface no surface layer
surface layer— surface layer— sand surface layer
layer—reinforced layer—non-reinforced
reinforced nonreinforced non-reinforced
A,B
4 Pipe stiffness A B C D
psi (kPa) 9 (62) 18 (124) 36 (248) 72 (496)
A
This cell-type format provides the means of identification and specification of piping materials. This cell-type format, however, is subject to misapplication since
unobtainable property combinations can be selected if the user is not familiar with non-commercially available products. The manufacturer needs to be consulted.
B
For the purposes of this specification, polyester includes vinyl ester resins.
D3262−20
5.3 Liner and Surface Layer—A liner or surface layer, or 6. Requirements
both, when incorporated into or onto the pipe, shall meet the
6.1 Workmanship—Each pipe shall be free from all defects
structural requirements of this specification.
including indentations, delaminations, bubbles, pinholes,
5.4 Joints—The pipe shall have a joining system that shall cracks, pits, blisters, foreign inclusions, and resin-starved areas
provide for fluid tightness for the intended service condition.
that, due to their nature, degree, or extent, detrimentally affect
Restrained or unrestrained and flexible or rigid joints are the strength and serviceability of the pipe. The pipe shall be as
acceptable depending on the specific configuration and design
uniform as commercially practicable in color, opacity, density,
conditions. and other physical properties.
5.4.1 Unrestrained—Pipe joints capable of withstanding
6.1.1 The inside surface of each pipe shall be free of bulges,
internal pressure but not longitudinal tensile loads.
dents, ridges, and other defects that result in a variation of
5.4.1.1 Coupling or Bell-and-Spigot Gasket Joints, with a
insidediameterofmorethan ⁄8in.(3.2mm)fromthatobtained
groove either on the spigot or in the bell to retain an
on adjacent unaffected portions of the surface. No glass fiber
elastomeric gasket that shall be the sole element of the joint to
reinforcement shall penetrate the interior surface of the pipe
provide watertightness. For typical joint detail see Fig. 1.
wall.
5.4.1.2 Mechanical Coupling Joint, with elastomeric seals.
6.1.2 Joint sealing surfaces shall be free of dents, gouges,
5.4.1.3 Butt Joint, with laminated overlay.
and other surface irregularities that will affect the integrity of
5.4.1.4 Flanged Joint, both integral and loose ring.
the joints.
5.4.2 Restrained—Pipe joints capable of withstanding inter-
6.2 Dimensions:
nal pressure and longitudinal tensile loads.
6.2.1 Pipe Diameters—The pipe shall be supplied in the
5.4.2.1 Joints similar to those in 5.4.1.1 with supplemental
nominal diameters shown in Table 2 or Table 3. The tolerances
restraining elements.
shall be as shown in Table 2 or Table 3, when measured in
5.4.2.2 Butt Joint, with laminated overlay.
accordance with 8.1.1.
5.4.2.3 Bell-and-Spigot, with laminated overlay.
6.2.2 Lengths—Pipe shall be supplied in nominal lengths of
5.4.2.4 Bell-and-Spigot, adhesive-bonded joint: Three types
10, 20, 30, 40, and 60 ft (3.05, 6.10, 9.15, 12.19, and 18.29 m).
of adhesive-bonded joints are permitted by this standard as
The actual laying length shall be the nominal length 62 in.
follows:
(651 mm), when measured in accordance with 8.1.2. At least
(1) Tapered bell-and-spigot, an adhesive joint that is manu-
90 % of the total footage of any one size and stiffness,
factured with a tapered socket for use in conjunction with a
excluding special-order lengths, shall be furnished in the
tapered spigot and a suitable adhesive.
nominal lengths specified by the purchaser. Random lengths, if
(2) Straight bell-and-spigot, an adhesive joint that is manu-
furnished, shall not vary from the nominal lengths by more
factured with an untapered socket for use in conjunction with
than 5 ft (1.53 m), or 25 %, whichever is less.
an untapered spigot and a suitable adhesive.
6.2.3 Wall Thickness—The average wall thickness of the
(3) Tapered bell and straight spigot, an adhesive joint that
pipeshallnotbelessthanthenominalwallthicknesspublished
is manufactured with a tapered socket for use with an unta-
in the manufacturer’s literature current at the time of purchase,
pered spigot and a suitable adhesive.
and the minimum wall thickness at any point shall not be less
5.4.2.5 Flanged Joint, both integral and loose ring.
than 87.5 % of the nominal wall thickness when measured in
5.4.2.6 Mechanical Coupling, an elastomeric sealed cou-
accordance with 8.1.3.
pling with supplemental restraining elements.
6.2.4 Squareness of Pipe Ends—All points around each end
5.4.2.7 Threaded joints.
of a pipe unit shall fall within 6 ⁄4 in. (66.4 mm) or 60.5 %
NOTE 6—It is acceptable to add other types of joints as they become
of the nominal diameter of the pipe, whichever is greater, to a
commercially available.
plane perpendicular to the longitudinal axis of the pipe, when
NOTE 7—Restrained joints typically increase service loads on the pipe
measured in accordance with 8.1.4.
to greater than those experienced with unrestrained joints. The purchaser
is cautioned to take into consideration all conditions in the anticipated
6.3 Chemical Requirements:
service and to consult the manufacturer regarding the suitability of a
6.3.1 Long-Term—Pipe specimens, when tested in accor-
particular type and class of pipe for service with restrained joint systems.
dance with 8.2.1, shall be capable of being deflected, without
5.5 Gaskets—Elastomeric gaskets used with this pipe shall
failure, at the 50 year strain level given in Table 4 when
conform to the requirements of Specification F477, except that
exposed to 1.0 N sulfuric acid.
composition of the elastomer shall be as agreed upon between
the purchaser and the supplier for the particular exposure to
NOTE 8—See Appendix X1 for derivation of the minimum sewer pipe
oily or aggressive chemical environments. chemical requirements given in Table 4.
FIG. 1 Typical Joints
D3262−20
TABLE 2 Nominal Inside Diameters (ID) and Tolerances Inside Diameter Control Pipe
Inch-Pound Series SI Series
B B
Nominal Tolerance, in. Nominal Metric ID Range, mm Tolerance on
A B
Declared ID, mm
Diameter, in. Diameter, mm Minimum Maximum
8 ±0.25 200 196 204 ±1.5
10 ±0.25 250 246 255 ±1.5
12 ±0.25 300 296 306 ±1.8
14 ±0.25 400 396 408 ±2.4
15 ±0.25 500 496 510 ±3.0
16 ±0.25 600 595 612 ±3.6
18 ±0.25 700 695 714
20 ±0.25 800 795 816 ±4.2
J
21 ±0.25 900 895 918
24 ±0.25 1000 995 1020
27 ±0.27 1200 1195 1220
30 ±0.30 1400 1395 1420
33 ±0.33 1600 1595 1620 ±5.0
36 ±0.36 1800 1795 1820
39 ±0.39 2000 1995 2020
42 ±0.42 (2200) 2195 2220
45 ±0.45 2400 2395 2420
48 ±0.48 (2600) 2595 2620 ±6.0
51 ±0.51 2800 2795 2820
54 ±0.54 (3000) 2995 3020
60 ±0.60 3200 3195 3220
66 ±0.66 (3400) 3395 3420
72 ±0.72 3600 3595 3620 ±7.0
78 ±0.78 (3800) 3795 3820
84 ±0.84 4000 3995 4020
90 ±0.90 . . . .
96 ±0.96 . . . .
102 ±1.00 . . . .
108 ±1.00 . . . .
114 ±1.00 . . . .
120 ±1.00 . . . .
132 ±1.00 . . . .
144 ±1.00 . . . .
156 ±1.00 . . . .
A
Inside diameters other than those shown shall be permitted by agreement between the purchaser and the supplier.
B
Values are taken from International Standards Organization documents. Parentheses indicate non-preferred diameters.
NOTE 9—The calculations in Table 4 and Appendix X1 assume that the
deflectionLevelBinaccordancewithTable6,thereshallbeno
neutral axis is at the pipe wall midpoint. For pipe wall constructions that
indication of structural damage as evidenced by interlaminar
produce an altered neutral axis position, 2y shall be substituted for t to
separation, separation of the liner or surface layer (if incorpo-
evaluate results and establish requirements. (y is the maximum distance
rated) from the structural wall, tensile failure of the glass fiber
from the neutral axis to the pipe surface.)
reinforcement, and fracture or buckling of the pipe wall.
6.3.2 Control Requirements—Test pipe specimens periodi-
NOTE 11—This is a visual observation (made with the unaided eye) for
cally in accordance with 8.2.2, following the procedure of
quality control purposes only and should not be considered a simulated
8.2.2.1, or alternatively, the procedure of 8.2.2.2.
service test. Table 6 values are based on an in-use long-term deflection
6.3.2.1 When the procedure of 8.2.2.1 is used, the following
limit of 5 % and provide an appropriate uniform safety margin for all pipe
three criteria must be met: (a) the average failure time at each
stiffnesses. Since the pipe stiffness values (F/∆y) shown in Table 5 vary,
strain level must fall at or above the lower 95 % confidence
the percent deflection of the pipe under a given set of installation
conditions will not be constant for all pipes. To avoid possible
limit of the originally determined regression line, (b) all
misapplication, take care to analyze all conditions that might affect
specimen-failure times shall be greater than the lower 95 %
performance of the installed pipe.
prediction limit of the originally determined regression line,
6.4.1 For other pipe stiffness levels, it is acceptable to
and (c) one third or more of the specimen-failure times must be
compute appropriate values for levelAand level B deflections
on or above the originally determined regression line.
(Table 6) as follows:
NOTE 10—Determine the lower 95 % confidence limit and the lower 95
0.33
% prediction limit in accordance with Annex A1.
Level A at new PS 5 ~9! (1)
S D
new PS
6.3.2.2 When the alternative procedure of 8.2.2.2 is used,
Level B at new PS 5 new Level A÷0.6
failure shall not occur in any specimen.
6.4 Stiffness—Each length of pipe shall have sufficient 6.4.2 For products that have use limits of other than 5 %
strength to exhibit the minimum pipe stiffness (F/∆y) specified long-term deflection, it is acceptable to proportionally adjust
in Table 5, when tested in accordance with 8.3. At deflection Level A and Level B
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3262 − 16 D3262 − 20
Standard Specification for
“Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin)
Sewer Pipe
This standard is issued under the fixed designation D3262; 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*Scope
1.1 This specification covers machine-made fiberglass pipe, 8 in. (200 mm) through 156 in. (4000 mm), intended for use in
gravity-flow systems for conveying sanitary sewage, storm water, and some industrial wastes. Both glass-fiber-reinforced
thermosetting-resin pipe (RTRP) and glass-fiber-reinforced polymer mortar pipe (RPMP) are fiberglass pipes.
NOTE 1—For the purposes of this standard, polymer does not include natural polymers.
1.2 Although this specification is suited primarily for pipes to be installed in buried applications, it is acceptable to apply it to
the extent applicable for other installations such as, but not limited to, jacking, tunnel lining and sliplining rehabilitation of existing
pipelines.
NOTE 2—There is no known ISO equivalent to this standard.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information
only.
1.4 The following safety hazards caveat pertains only to the test method portion, Section 8, 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, health, and environmental practices and determine the applicability of regulatory
limitations prior to use.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
C33 Specification for Concrete Aggregates
D638 Test Method for Tensile Properties of Plastics
D695 Test Method for Compressive Properties of Rigid Plastics
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2412 Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading
D2584 Test Method for Ignition Loss of Cured Reinforced Resins
D2992 Practice for Obtaining Hydrostatic or Pressure Design Basis for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-
Resin) Pipe and Fittings
D3567 Practice for Determining Dimensions of “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Pipe and Fittings
D3681 Test Method for Chemical Resistance of “Fiberglass” (Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a Deflected
Condition
D3892 Practice for Packaging/Packing of Plastics
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic Piping
Systems and Chemical Equipment.
Current edition approved April 1, 2016March 1, 2020. Published April 2016March 2020. Originally approved in 1973. Last previous edition approved in 20112016 as
D3262 – 11.D3262 – 16. DOI: 10.1520/D3262-16.10.1520/D3262-20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
D3262 − 20
D4161 Specification for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe Joints Using Flexible Elastomeric
Seals
F412 Terminology Relating to Plastic Piping Systems
F477 Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe
2.2 AWWA Standard:
Standard C-950, Glass-Fiber Reinforced Thermosetting Resin Pipe
3. Terminology
3.1 Definitions:
3.1.1 General—Unless otherwise indicated, definitions are in accordance with Terminology D883 or Terminology F412, and
abbreviations are in accordance with Terminology D1600.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 fiberglass pipe—tubular product containing glass fiber reinforcements embedded in or surrounded by cured thermosetting
resin.
3.2.1.1 Discussion—
The composite structure may contain aggregate, granular, or platlet fillers, thixotropic agents, pigments, or dyes, and thermoplastic
or thermosetting liners.
3.2.2 flexible joint —a joint that is capable of axial displacement or angular rotation, or both.
3.2.3 liner—a resin layer, with or without filler or reinforcement, or both, forming the interior surface of the pipe.
3.2.4 qualification test—one or more tests used to prove the design of a product. Not a routine quality control test.
3.2.5 reinforced polymer mortar pipe (RPMP)—fiberglass pipe with aggregate.
3.2.6 reinforced thermosetting resin pipe (RTRP)—fiberglass pipe without aggregate.
3.2.7 rigid joint— a joint that is not capable of axial displacement or angular rotation.
3.2.8 surface layer—a resin layer, with or without filler or reinforcement, or both, applied to the exterior surface of the pipe
structural wall.
4. Classification
4.1 General—This specification covers fiberglass sewer pipe defined by raw materials in the structural wall (type) and liner,
surface layer material (grade), and pipe stiffness. Table 1 lists the types, liners, grades, and stiffnesses covered.
NOTE 3—All possible combinations of types, liners, grades, and stiffnesses may not be commercially available. It is acceptable to add additional types,
liners, grades, and stiffnesses as they become commercially available. The purchaser should determine for himself or consult with the manufacturer for
TABLE 1 General Designation Requirements for Fiberglass Sewer Pipe
Desig-
A
nation Property Cell Limits
Order
1 Type 1 2 3 4
glass-fiber-reinforced glass-fiber-resin-reinforced glass-fiber-reinforced glass-fiber-reinforced
B B
thermosetting polyester resin thermosetting polyester resin thermosetting epoxy resin thermosetting epoxy resin
B B
mortar (RPMP polyester ) (RTRP polyester )
mortar (RPMP epoxy) (RTRP epoxy)
2 Liner 1 2 3 4
reinforced thermoset liner non-reinforced thermoset liner thermoplastic liner no liner
3 Grade 1 2 3 4 5 6
B B B
polyester resin polyester resin polyester resin and epoxy resin surface epoxy resin surface no surface layer
surface layer— surface layer— sand surface layer
layer—reinforced layer—non-reinforced
reinforced nonreinforced non-reinforced
A,B
4 Pipe stiffness A B C D
psi (kPa) 9 (62) 18 (124) 36 (248) 72 (496)
A
This cell-type format provides the means of identification and specification of piping materials. This cell-type format, however, is subject to misapplication since
unobtainable property combinations can be selected if the user is not familiar with non-commercially available products. The manufacturer needs to be consulted.
B
For the purposes of this specification, polyester includes vinyl ester resins.
Available from American Water Works Association (AWWA), 6666 W. Quincy Ave., Denver, CO 80235, http://www.awwa.org.
D3262 − 20
the proper type, liner, grade, and stiffness of pipe to be used under the installation and operating conditions that will exist for the project in which pipe
is to be used.
4.2 Designation Requirements—The pipe materials designation code shall consist of the standard designation, ASTM D3262,
followed by type, liner, and grade indicated in Arabic numerals, and pipe stiffness by a capital letter. Table 1 presents a summary
of the designation requirements. Thus a complete material code shall consist of ASTM D3262, three numerals, and a capital letter.
NOTE 4—Examples of the designation codes are as follows: (1) ASTM D3262-1-1-3-A for glass–fiber–reinforced aggregate and polyester resin mortar
pipe with a reinforced thermoset liner and an unreinforced polyester resin and sand surface layer having a minimum pipe stiffness of 9 psi (62 kPa). (2)
ASTM D3262-4-2-6-C for glass–fiber–reinforced epoxy resin pipe with an unreinforced thermoset liner, no surface layer, having a minimum pipe stiffness
of 36 psi (248 kPa).
NOTE 5—Although the Form and Style for ASTM Standards manual requires that the type classification be roman numerals, it is recognized that few
companies have stencil-cutting equipment for this style of type, and it is therefore acceptable to mark the product type in Arabic numbers.
5. Materials and Manufacture
5.1 General—The thermosetting resins, glass fiber reinforcements, fillers, and other materials, when combined as a composite
structure, shall produce piping products that meet the performance requirements of this specification.
5.2 Wall Composition—The basic structural wall composition shall consist of a thermosetting resin, glass-fiber reinforcement,
and if used, an aggregate filler.
5.2.1 Resin—A thermosetting polyester or epoxy resin, with or without filler.
5.2.2 Reinforcement—A commercial grade of glass fibers compatible with the resin used.
5.2.3 Aggregate—A siliceous sand conforming to the requirements of Specification C33, except that the requirements for
gradation shall not apply.
5.3 Liner and Surface Layer—A liner or surface layer, or both, when incorporated into or onto the pipe, shall meet the structural
requirements of this specification.
5.4 Joints—The pipe shall have a joining system that shall provide for fluid tightness for the intended service condition.
Restrained or unrestrained and flexible or rigid joints are acceptable depending on the specific configuration and design conditions.
5.4.1 Unrestrained—Pipe joints capable of withstanding internal pressure but not longitudinal tensile loads.
5.4.1.1 Coupling or Bell-and-Spigot Gasket Joints, with a groove either on the spigot or in the bell to retain an elastomeric
gasket that shall be the sole element of the joint to provide watertightness. For typical joint detail see Fig. 1.
5.4.1.2 Mechanical Coupling Joint, with elastomeric seals.
5.4.1.3 Butt Joint, with laminated overlay.
5.4.1.4 Flanged Joint, both integral and loose ring.
5.4.2 Restrained—Pipe joints capable of withstanding internal pressure and longitudinal tensile loads.
5.4.2.1 Joints similar to those in 5.4.1.1 with supplemental restraining elements.
5.4.2.2 Butt Joint, with laminated overlay.
5.4.2.3 Bell-and-Spigot, with laminated overlay.
5.4.2.4 Bell-and-Spigot, adhesive-bonded joint: Three types of adhesive-bonded joints are permitted by this standard as follows:
(1) Tapered bell-and-spigot, an adhesive joint that is manufactured with a tapered socket for use in conjunction with a tapered
spigot and a suitable adhesive.
(2) Straight bell-and-spigot, an adhesive joint that is manufactured with an untapered socket for use in conjunction with an
untapered spigot and a suitable adhesive.
(3) Tapered bell and straight spigot, an adhesive joint that is manufactured with a tapered socket for use with an untapered
spigot and a suitable adhesive.
5.4.2.5 Flanged Joint, both integral and loose ring.
5.4.2.6 Mechanical Coupling, an elastomeric sealed coupling with supplemental restraining elements.
5.4.2.7 Threaded joints.
NOTE 6—It is acceptable to add other types of joints as they become commercially available.
NOTE 7—Restrained joints typically increase service loads on the pipe to greater than those experienced with unrestrained joints. The purchaser is
cautioned to take into consideration all conditions in the anticipated service and to consult the manufacturer regarding the suitability of a particular type
and class of pipe for service with restrained joint systems.
5.5 Gaskets—Elastomeric gaskets used with this pipe shall conform to the requirements of Specification F477, except that
composition of the elastomer shall be as agreed upon between the purchaser and the supplier for the particular exposure to oily
or aggressive chemical environments.
FIG. 1 Typical Joints
D3262 − 20
6. Requirements
6.1 Workmanship—Each pipe shall be free from all defects including indentations, delaminations, bubbles, pinholes, cracks,
pits, blisters, foreign inclusions, and resin-starved areas that, due to their nature, degree, or extent, detrimentally affect the strength
and serviceability of the pipe. The pipe shall be as uniform as commercially practicable in color, opacity, density, and other physical
properties.
6.1.1 The inside surface of each pipe shall be free of bulges, dents, ridges, and other defects that result in a variation of inside
diameter of more than ⁄8 in. (3.2 mm) from that obtained on adjacent unaffected portions of the surface. No glass fiber
reinforcement shall penetrate the interior surface of the pipe wall.
6.1.2 Joint sealing surfaces shall be free of dents, gouges, and other surface irregularities that will affect the integrity of the
joints.
6.2 Dimensions:
6.2.1 Pipe Diameters—The pipe shall be supplied in the nominal diameters shown in Table 2 or Table 3. The tolerances shall
be as shown in Table 2 or Table 3, when measured in accordance with 8.1.1.
6.2.2 Lengths—Pipe shall be supplied in nominal lengths of 10, 20, 30, 40, and 60 ft (3.05, 6.10, 9.15, 12.19, and 18.29 m).
The actual laying length shall be the nominal length 62 in. (651 mm), when measured in accordance with 8.1.2. At least 90 %
of the total footage of any one size and stiffness, excluding special-order lengths, shall be furnished in the nominal lengths specified
by the purchaser. Random lengths, if furnished, shall not vary from the nominal lengths by more than 5 ft (1.53 m), or 25 %,
whichever is less.
6.2.3 Wall Thickness—The average wall thickness of the pipe shall not be less than the nominal wall thickness published in the
manufacturer’s literature current at the time of purchase, and the minimum wall thickness at any point shall not be less than 87.5 %
of the nominal wall thickness when measured in accordance with 8.1.3.
6.2.4 Squareness of Pipe Ends—All points around each end of a pipe unit shall fall within 6 ⁄4 in. (66.4 mm) or 60.5 % of
the nominal diameter of the pipe, whichever is greater, to a plane perpendicular to the longitudinal axis of the pipe, when measured
in accordance with 8.1.4.
6.3 Chemical Requirements:
TABLE 2 Nominal Inside Diameters (ID) and Tolerances Inside Diameter Control Pipe
Inch-Pound Series SI Series
B B
Nominal Tolerance, in. Nominal Metric ID Range, mm Tolerance on
A B
Declared ID, mm
Diameter, in. Diameter, mm
Minimum Maximum
8 ±0.25 200 196 204 ±1.5
10 ±0.25 250 246 255 ±1.5
12 ±0.25 300 296 306 ±1.8
14 ±0.25 400 396 408 ±2.4
15 ±0.25 500 496 510 ±3.0
16 ±0.25 600 595 612 ±3.6
18 ±0.25 700 695 714
20 ±0.25 800 795 816 ±4.2
J
21 ±0.25 900 895 918
24 ±0.25 1000 995 1020
27 ±0.27 1200 1195 1220
30 ±0.30 1400 1395 1420
33 ±0.33 1600 1595 1620 ±5.0
36 ±0.36 1800 1795 1820
39 ±0.39 2000 1995 2020
42 ±0.42 (2200) 2195 2220
45 ±0.45 2400 2395 2420
48 ±0.48 (2600) 2595 2620 ±6.0
51 ±0.51 2800 2795 2820 6
54 ±0.54 (3000) 2995 3020
60 ±0.60 3200 3195 3220
66 ±0.66 (3400) 3395 3420
72 ±0.72 3600 3595 3620 ±7.0
78 ±0.78 (3800) 3795 3820
84 ±0.84 4000 3995 4020
90 ±0.90 . . . .
96 ±0.96 . . . .
102 ±1.00 . . . .
108 ±1.00 . . . .
114 ±1.00 . . . .
120 ±1.00 . . . .
132 ±1.00 . . . .
144 ±1.00 . . . .
156 ±1.00 . . . .
A
Inside diameters other than those shown shall be permitted by agreement between the purchaser and the supplier.
B
Values are taken from International Standards Organization documents. Parentheses indicate non-preferred diameters.
D3262 − 20
TABLE 3 Nominal Outside Diameters (OD) and Tolerances
NOTE 1—The external diameter of the pipe at the spigots shall be within the tolerances given in the table, and the manufacturer shall declare his
allowable maximum and minimum spigot diameters. Some pipes are manufactured such that the entire pipe meets the OD tolerances while other pipes
meet the tolerances at the spigots, in which case, if such pipes are cut (shortened) it is possible that the ends will need to be calibrated to the tolerances.
Metric Ductile Iron Pipe Tolerance Upper, Tolerance Lower, International O.D., Tolerance Upper, Tolerance Lower,
Pipe Size, mm Equivalent, mm mm mm mm mm mm
200 220.0 +1.0 0.0 . . . . . . . . .
250 271.8 +1.0 -0.2 . . . . . . . . .
300 323.8 +1.0 -0.3 310 +1.0 -1.0
350 375.7 +1.0 -0.3 361 +1.0 -1.2
400 426.6 +1.0 -0.3 412 +1.0 -1.4
450 477.6 +1.0 -0.4 463 +1.0 -1.6
500 529.5 +1.0 -0.4 514 +1.0 -1.8
600 632.5 +1.0 -0.5 616 +1.0 -2.0
700 . . . 718 +1.0 -2.2
800 . . . 820 +1.0 -2.4
900 . . . 924 +1.0 -2.6
1000 . . . 1026 +2.0 -2.6
1200 . . . . . . +2.0 . . .
1400 . . . 1229 +2.0 -2.6
1600 . . . 1434 +2.0 -2.8
1800 . . . 1638 +2.0 -2.8
2000 . . . 1842 +2.0 -3.0
2200 . . . 2046 +2.0 -3.0
2400 . . . 2250 +2.0 -3.2
2600 . . . 2453 +2.0 -3.4
2800 . . . 2658 +2.0 -3.6
3000 . . . 2861 +2.0 -3.8
3200 . . . 3066 +2.0 -4.0
3400 . . . 3270 +2.0 -4.2
3600 . . . 3474 +2.0 -4.4
3800 . . . 3678 +2.0 -4.6
4000 . . . 3882 +2.0 -4.8
... ... ... ... 4086 +2.0 -5.0
6.3.1 Long-Term—Pipe specimens, when tested in accordance with 8.2.1, shall be capable of being deflected, without failure,
at the 50 year strain level given in Table 4 when exposed to 1.0 N sulfuric acid.
NOTE 8—See Appendix X1 for derivation of the minimum sewer pipe chemical requirements given in Table 4.
NOTE 9—The calculations in Table 4 and Appendix X1 assume that the neutral axis is at the pipe wall midpoint. For pipe wall constructions that
produce an altered neutral axis position, 2y shall be substituted for t to evaluate results and establish requirements. (y is the maximum distance from the
neutral axis to the pipe surface.)
6.3.2 Control Requirements—Test pipe specimens periodically in accordance with 8.2.2, following the procedure of 8.2.2.1, or
alternatively, the procedure of 8.2.2.2.
D3262 − 20
TABLE 4 Minimum Sanitary Sewer Pipe Chemical Requirements ε
SCV
Minimum Strain
Pipe Stiffness,
psi (kPa)
6 min 10 h 100 h 1000 h 10 000 h 50 years
9 (62) 0.97 (t/d) 0.84 (t/d) 0.78 (t/d) 0.73 (t/d) 0.68 (t/d) 0.60 (t/d)
18 (124) 0.85 (t/d) 0.72 (t/d) 0.66 (t/d) 0.61 (t/d) 0.56 (t/d) 0.49 (t/d)
36 (248) 0.71 (t/d) 0.60 (t/d) 0.55 (t/d) 0.51 (t/d) 0.47 (t/d) 0.41 (t/d)
72 (496) 0.56 (t/d) 0.48 (t/d) 0.44 (t/d) 0.41 (t/d) 0.38 (t/d) 0.34 (t/d)
Where: t and d are the nominal total wall thickness and the mean diameter (inside diameter
...