ISO/WD 21799

Ductile iron pipes, fittings, accessories and valves — External coatings of Ductile Iron Pipeline Systems — Aggressiveness assessment, requirements and field of use ISO/WD 21799

Scope

The proposed standard provides recommended coating systems for ductile iron pipelines based on evaluation of soil characteristics, with details of the manner the data may be collected and the details of the soil testing methods. This standard provides guidance on: Identification of the influencing parameters, the methods of testing the soil to evaluate the influence of those parameters and to provide recommended coating systems based on the results of that testing.