The purpose of this standard is to define the internal and/or external coatings of polyamide powders applied by dipping in a fluidised bed or by spraying on to a hot substrate, or by roto-coating. These coatings are intended for protecting the outer and/or inner surface of tubes and their fittings (components) used as pipeline component parts. All part of this standard can be applied for accessories (such as valves, pumps, screens, boilers, etc.).#,,#