ASTM D4024-22

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: D4024 − 15 D4024 − 22
Standard Specification for
Machine Made “Fiberglass” (Glass-Fiber-Reinforced
1
Thermosetting Resin) Flanges
This standard is issued under the fixed designation D4024; 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*
1.1 This specification covers reinforced-thermosetting resin flanges other than contact-molded flanges. Included are requirements
for materials, workmanship, performance, and dimensions.
1.2 Flanges may be produced integrally with a pipe or fitting, may be produced with a socket for adhesive bonding to a pipe or
fitting, or may be of the type used in conjunction with either a metallic or nonmetallic backup ring.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are given for information
only. In cases where materials, products, or equipment are available only in SI units, inch-pound units are omitted.
1.4 The following precautionary caveat pertains only to the test methods portion, Section 10, 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.
NOTE 1—Contact molded flanges are covered in Specification D5421 and referenced in Specification D5685.
NOTE 2—There is no known ISO equivalent to this standard.
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
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings
D1600 Terminology for Abbreviated Terms Relating to Plastics
D5421 Specification for Contact Molded “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Flanges
D5685 Specification for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pressure Pipe Fittings
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 May 1, 2015July 1, 2022. Published June 2015July 2022. Originally approved in 1981. Last previous edition approved in 20122015 as
D4024 – 12.D4024 – 15. DOI: 10.1520/D4024-15.10.1520/D4024-22.
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 ----------------------
D4024 − 22
F412 Terminology Relating to Plastic Piping Systems
3
2.2 ANSI Standards:
B 16.1 Cast Iron Pipe Flanges and Flanged Fittings
B 16.5 Pipe Flanges and Flanged Fittings
3. Terminology
3.1 Definitions:
3.1.1 General—Definitions are in accordance with Terminology D883 or Terminology F412. Abbreviations are in accordance with
Terminology D1600, unless otherwise indicated. The abbreviation for reinforced-thermosetting-resin pipe is RTRP.
4. Classification
4.1 General—This specification covers machine-made reinforced-thermosetting-resin flanges defined by type (method of
manufacture), grade (generic type of resin), class (configuration of joining system), and pressure rating. Flanges complying with
this specification are also given numerical classifications relating to burst pressure, sealing test pressure, and bolt torque limit.
4.1.1 Types:
4.1.1.1 Type 1—Filament-wound flanges manufactured by winding continuous fibrous glass strand roving or roving tape, either
preimpregnated or impregnated during winding, into a onto flange cavitytooling under cont
...