ASTM G20-88(2002) - 27.5.1988
Significance and Use

The data obtained for short-term tests are of interest only in eliminating the most unsuitable materials or for indicating a probable order of resistance in any particular media.

Test conditions should take into account the manner and duration of immersion, the reagent, the temperature of the system, the area exposed above and below the liquid level, and other performance factors selected for the particular test.

1. Scope

1.1 This test method is intended for evaluating the resistance of pipe coating materials when exposed to various concentrations of reagents or suspected soil contaminants. The test serves as a guide to investigators wishing to compare the relative merits of pipe-coating materials in specific environments. The choice of reagents, concentrations, duration of immersion, temperature of test, and properties to be reported are necessarily arbitrary and should be chosen to reflect conditions known to exist along the pipeline right-of-way.

1.2 The values stated in SI 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.

2. Referenced Documents


Standard Test Method for Nondestructive Measurement of Film Thickness of Pipeline Coatings on Steel


Standard Test Method for Penetration Resistance of Pipeline Coatings (Blunt Rod)


Standard Test Methods for Cathodic Disbonding of Coated Steel


Standard Practices for Evaluating the Resistance of Plastics to Chemical Reagents


Standard Terminology Relating to Plastics