ASTM D5685-19 - 1.4.2019
 
1. Scope

1.1 This specification covers “fiberglass” (glass-fiber-reinforced thermosetting-resin) fittings for use with filament wound or centrifugally cast fiberglass pipe, or both, in sizes 1 in. through 24 in. for pipe manufactured to Specification D2996 or D2997, or both.

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.

1.3 The following safety hazard caveat pertains only to the test method portion, Section 7, of this specification:

1.4 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: The term “fiberglass pipe” as described in Section 3 of this specification applies to both reinforced thermosetting resin pipe (RTRP) and reinforced polymer mortar pipe (RPMP).

Note 2: For the purposes of this standard, polymer does not include natural polymers.

Note 3: 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

F477-14(2021)

Standard Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe

B16.5

Steel Pipe Flanges, Flanged Valves and Fittings Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.

D2997-21

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

D2996-23

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

D2992-24

Standard Practice for Obtaining Hydrostatic or Pressure Design Basis for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe and Fittings

D2310-06

Standard Classification for Machine-Made ""Fiberglass"" (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe

D3567-17(2022)

Standard Practice for Determining Dimensions of “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Pipe and Fittings

D1600-18

Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)

D1599-18(2024)

Standard Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings

D1598-24

Standard Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure

D883-26b

Standard Terminology Relating to Plastics (Includes all amendments and changes 8/24/2026).

D618-21

Standard Practice for Conditioning Plastics for Testing

D2143-21

Standard Test Method for Cyclic Pressure Strength of Reinforced, Thermosetting Plastic Pipe

F412-25a

Standard Terminology Relating to Plastic Piping Systems (Includes all amendments and changes 10/8/2025).

D4024-22

Standard Specification for Machine Made “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Flanges