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ASTM D3681-12

ASTM D3681-12

Standard Test Method for Chemical Resistance of “Fiberglass” (Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a Deflected Condition

2014-04-02 /Historical
Superseeded by:
Significance and Use:

This test method evaluates the effect of a chemical environment on pipe when in a deflected condition. It has been found that effects of chemical environments can be accelerated by strain induced by deflection. This information is useful and necessary for the design and application of buried fiberglass pipe.

Note 4—Pipe of the same diameter but of different wall thicknesses will develop different strains with the same deflection. Also, pipes having the same wall thickness but different constructions making up the wall may develop different strains with the same deflection.


1.1 This test method covers the procedure for determining the chemical-resistant properties of fiberglass pipe in a deflected condition for diameters 4 in. (102 mm) and larger. Both glassfiberreinforced thermosetting resin pipe (RTRP) and glassfiberreinforced polymer mortar pipe (RPMP) are fiberglass pipes.

Note 1—For the purposes for this standard, polymer does not include natural polymers.

1.2 Inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 9.5.

Note 2—There is no known ISO equivalent to this standard.

chemical resistance; constant deflection; extrapolation; fiberglass pipe; regression line; strain-corrosion ; Glass-fiber-reinforced thermosetting resin (“fiberglass”); Reinforced thermosetting-resin pipe (RTRP); RPMP (reinforced polymer mortar pipe); Chemical resistance--plastics; Constant deflection; Deflection--plastics; Fiberglass pipe; Strain corrosion
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