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ASTM D3982-21

(Specification)

Standard Specification for Contact Molded “Fiberglass” (Glass Fiber Reinforced Thermosetting Resin) Ducts

Standard Specification for Contact Molded “Fiberglass” (Glass Fiber Reinforced Thermosetting Resin) Ducts

ABSTRACT
This specification covers the material and design requirements, and fabrication of ducts and hoods made of "fiberglass" (glass fiber reinforced thermosetting resin) consisting of a polyester, vinyl ester, or other qualified resin-matrix systems with fiber reinforcement manufactured by contact molding, intended for use in handling corrosive fumes and process gases. Special attention is given to equipment that operates at specified temperatures with regard to strength and corrosion resistance. This specification does not address the selection of resins and reinforcements for specific chemical environments.
SCOPE
1.1 This specification covers ducts fabricated by contact molding intended for use in handling corrosive fumes and process gases. Special attention is given to equipment that operates at temperatures over 180°F (82.2°C) with regard to strength and corrosion resistance.  
1.2 The material of construction shall be “fiberglass” consisting of a polyester, vinyl ester, or other qualified resin-matrix systems with fiber reinforcement in accordance with Specification C582.  
1.3 This specification is not intended to cover selection of resins and reinforcements for specific chemical environments.  
1.4 This specification covers ducts up to a design pressure of ±5 psig (34.5 Pa).  
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.6 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.
Note 1: There is no known ISO equivalent to this standard.  
1.7 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
31-Mar-2021
ICS
83.120 - Reinforced plastics
Technical Committee
D20 - Plastics
Drafting Committee
D20.23 - Reinforced Thermosetting Resin Piping Systems and Chemical Equipment
Current Stage
Ref Project

Relations

Refers
ASTM C581-20 - Standard Practice for Determining Chemical Resistance of Thermosetting Resins Used in Glass-Fiber-Reinforced Structures Intended for Liquid Service
Effective Date
15-Feb-2020
Refers
ASTM F412-20 - Standard Terminology Relating to Plastic Piping Systems
Effective Date
01-Apr-2020

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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: D3982 − 21
Standard Specification for
Contact Molded “Fiberglass” (Glass Fiber Reinforced
1
Thermosetting Resin) Ducts
This standard is issued under the fixed designation D3982; 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
2
2.1 ASTM Standards:
1.1 This specification covers ducts fabricated by contact
molding intended for use in handling corrosive fumes and C581 Practice for Determining Chemical Resistance of
Thermosetting Resins Used in Glass-Fiber-Reinforced
process gases. Special attention is given to equipment that
operates at temperatures over 180°F (82.2°C) with regard to Structures Intended for Liquid Service
C582 Specification for Contact-Molded Reinforced Thermo-
strength and corrosion resistance.
setting Plastic (RTP) Laminates for Corrosion-Resistant
1.2 The material of construction shall be “fiberglass” con-
Equipment
sisting of a polyester, vinyl ester, or other qualified resin-matrix
D883 Terminology Relating to Plastics
systems with fiber reinforcement in accordance with Specifi-
D2583 Test Method for Indentation Hardness of Rigid Plas-
cation C582.
3
tics by Means of a Barcol Impressor (Withdrawn 2022)
1.3 This specification is not intended to cover selection of
D2584 Test Method for Ignition Loss of Cured Reinforced
resins and reinforcements for specific chemical environments.
Resins
F412 Terminology Relating to Plastic Piping Systems
1.4 This specification covers ducts up to a design pressure
F436 Specification for Hardened Steel Washers (Metric)
of 65 psig (34.5 Pa).
F0436_F0436M
1.5 The values stated in inch-pound units are to be regarded
2.2 NFPA Standard:
as standard. The values given in parentheses are mathematical
NFPA 91 Installation of Blower and Exhaust Systems for
conversions to SI units that are provided for information only
4
Duct, Stack and Vapor Removal or Conveying
and are not considered standard.
1.6 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
3.1.1 The definitions used in this specification are in accor-
priate safety, health, and environmental practices and deter-
dance with definitions in Terminologies D883 and F412, unless
mine the applicability of regulatory limitations prior to use.
otherwise specified.
3.2 Definitions of Terms Specific to This Standard:
NOTE 1—There is no known ISO equivalent to this standard.
3.2.1 calculated thickness—this description is in accordance
1.7 This international standard was developed in accor-
with the standard laminate composition tables for Types I and
dance with internationally recognized principles on standard-
II in Specification C582.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 3.2.2 contact molding—includes the “hand layup” and the
“spray up” methods of manufacture.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2
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
1
This specification is under the jurisdiction of ASTM Committee D20 on Standards volume information, refer to the standard’s Document Summary page on
Plastics and is the direct responsibility of Subcommittee D20.23 on Reinforced the ASTM website.
3
Thermosetting Resin Piping Systems and Chemical Equipment. The last approved version of this historical standard is referenced on
Current edition approved April 1, 2021. Published April 2021. Originally www.astm.org.
4
approved in 1981. Last previous edition approved in 2014 as D3982 – 08(2014). Available from National Fire Protection Association (NFPA), 1 Batterymarch
DOI: 10.1520/D3982-21. Park, Quincy, MA 02169-7471, http://www.nfpa.org.
*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
1

---------------------- Page: 1 ----------------------
D3982 − 21
3.2.3 flange cant—the angle that an entire branch is off from
being perpendicular to the main run centerline (see Fig. 1).
3.2.4 flange flatness—maximum deviation, (see Fig. 2) from
the actual flange face not including warpage or perpendicular-
ity.
3.2.5 flange offset—the amoun
...

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: D3982 − 08 (Reapproved 2014) D3982 − 21
Standard Specification for
Contact Molded “Fiberglass” (Glass Fiber Reinforced
1
Thermosetting Resin) Ducts
This standard is issued under the fixed designation D3982; 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 ducts fabricated by contact molding intended for use in handling corrosive fumes and process gases.
Special attention is given to equipment that operates at temperatures over 180°F (82.2°C) with regard to strength and corrosion
resistance.
1.2 The material of construction shall be “fiberglass” consisting of a polyester, vinyl ester, or other qualified resin-matrix systems
with fiber reinforcement in accordance with Specification C582.
1.3 This specification is not intended to cover selection of resins and reinforcements for specific chemical environments.
1.4 This specification covers ducts up to a design pressure of 65 psig (34.5 Pa).
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.6 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.
NOTE 1—There is no known ISO equivalent to this standard.standard.
1.7 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
2.1 ASTM Standards:
C581 Practice for Determining Chemical Resistance of Thermosetting Resins Used in Glass-Fiber-Reinforced Structures
Intended for Liquid Service
1
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic
Thermosetting Resin Piping Systems and Chemical Equipment.
Current edition approved March 1, 2014April 1, 2021. Published March 2014April 2021. Originally approved in 1981. Last previous edition approved in 20082014 as
D3982 – 08.D3982 – 08(2014). DOI: 10.1520/D3982-08R14.10.1520/D3982-21.
2
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 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
1

---------------------- Page: 1 ----------------------
D3982 − 21
C582 Specification for Contact-Molded Reinforced Thermosetting Plastic (RTP) Laminates for Corrosion-Resistant Equipment
D883 Terminology Relating to Plastics
D2583 Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor
D2584 Test Method for Ignition Loss of Cured Reinforced Resins
F412 Terminology Relating to Plastic Piping Systems
F436 Specification for Hardened Steel Washers (Metric) F0436_F0436M
2.2 NFPA Standard:
3
NFPA 91 Installation of Blower and Exhaust Systems for Duct, Stack and Vapor Removal or Conveying
3. Terminology
3.1 Definitions:
3.1.1 The definitions used in this specification are in accordance with definitions in Terminologies D883 and F412, unless
otherwise specified.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 calculated thickness—this description is in accordance with the standard laminate composition tables for Types I and II in
Specification C582.
3.2.2 contact molding—includes the “hand layup” and the “spray up” methods of manufacture.
3.2.3 flange cant—the angle that an entire branch is off from being perpendicular to the main run centerline (see Fig. 1).
3.2.4 flange flatness—maximum deviation, (see Fig. 2) from the actual flange face not including warpage or perpendicularity.
3.2.5 flange offset—the amount that an entire branch is off the mai
...

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SIGNIFICANCE AND USE
4.1 The results obtained by this practice shall serve as a guide in, but not as the sole basis for, selection of a thermosetting resin used in an RTP structure. No attempt has been made to incorporate into the practice all the various factors that will potentially affect the serviceability of an RTP structure when subjected to chemical environments. These factors will potentially include stress, different resin-to-glass ratios, and multiple veils.
SCOPE
1.1 This practice is designed to evaluate, in an unstressed state, the chemical resistance of thermosetting resins used in the fabrication of reinforced thermosetting plastic (RTP) laminates. This practice provides for the determination of changes in the properties, described as follows, of the test specimens and test reagent after exposure of the specimens to the reagent: hardness of specimens, weight change thickness, appearance of specimens, appearance of immersion media, and flexural strength and modulus.  
1.1.1 This practice is also useful to evaluate other factors, such as surfacing veils and the effect of resin additives, on the chemical resistance of the resin.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Note 1: There is no known ISO equivalent to this standard.  
1.3 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.  
1.4 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.

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ASTM
ASTM D5961/D5961M-23(Test Method)
Standard Test Method for Bearing Response of Polymer Matrix Composite Laminates

SIGNIFICANCE AND USE
5.1 Refer to Guide D8509.
SCOPE
1.1 This test method covers the bearing response of pinned or fastened joints using multi-directional polymer matrix composite laminates reinforced by high-modulus fibers by double-shear tensile loading (Procedure A), single-shear tensile or compressive loading of a two-piece specimen (Procedure B), single-shear tensile loading of a one-piece specimen (Procedure C), or double-shear compressive loading (Procedure D). Standard specimen configurations using fixed values of test parameters are described for each procedure. However, when fully documented in the test report, a number of test parameters may be optionally varied. The composite material forms are limited to continuous-fiber or discontinuous-fiber (tape or fabric, or both) reinforced composites for which the laminate is balanced and symmetric with respect to the test direction. The range of acceptable test laminates and thicknesses are described in 8.2.1.  
1.2 This test method is consistent with the recommendations of MIL-HDBK-17, which describes the desirable attributes of a bearing response test method.  
1.3 The multi-fastener test configurations described in this test method are similar to those used by industry to investigate the bypass portion of the bearing bypass interaction response for bolted joints, where the specimen may produce either a bearing failure mode or a bypass failure mode. Note that the scope of this test method is limited to bearing and fastener failure modes. Use Test Method D7248/D7248M for by-pass testing.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4.1 Within the text the inch-pound units are shown in brackets.  
1.5 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.  
1.6 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.

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ASTM
ASTM D5766/D5766M-23(Test Method)
Standard Test Method for Open-Hole Tensile Strength of Polymer Matrix Composite Laminates

SIGNIFICANCE AND USE
5.1 Refer to Guide D8509.
SCOPE
1.1 This test method determines the open-hole tensile strength of multidirectional polymer matrix composite laminates reinforced by high-modulus fibers. The composite material forms are limited to continuous-fiber or discontinuous-fiber (tape or fabric, or both) reinforced composites in which the laminate is balanced and symmetric with respect to the test direction. The range of acceptable test laminates and thicknesses are described in 8.2.1.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.2.1 Within the text the inch-pound units are shown in brackets.  
1.3 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.  
1.4 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.

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