ASTM G9-07-2020 Standard Test Method for Water Permeability of Pipe Coatings

意义和目的

4.1 The deterioration of insulation coating is closely related to its moisture content. Water permeability testing provides a means of monitoring the passage of water through a coating material by its change in dielectric constant. When expressed in time, the test data will reflect the rate of deterioration of the coating material properties and will be correlated with its expected service life as an insulating coating. Water penetration testing will also provide information that will help determine a better coating thickness for a given material.

ASTM G9-07-2020 Standard Test Method for Water Permeability of Pipe Coatings

范围

1.1 This method consists of determining the apparent depth rate of water penetration into the insulating coating applied to the pipe.

1.2 Values expressed in SI units are treated as standards. 括号内的数值仅供参考.

1.3 本标准并非旨在解决所有安全问题, 如果有的话, 与其使用相关. 本标准的使用者有责任建立适当的安全机制, 健康和环境实践，并在使用前确定监管限制的适用性.

ASTM G9-07-2020 Standard Test Method for Water Permeability of Pipe Coatings

1.4 This international Standard has been developed in accordance with the internationally accepted standardization principles established in the decisions of the Committee on Technical Barriers to Trade (技术性贸易壁垒) of the World Trade Organization on the Formulation of International standards, guidelines and recommended principles.