scope:

Defines the application of factory applied three layer extruded polypropylene based coating for the corrosion protection of tubes and pipeline components. External extruded polypropylene coating can be used for the protection of buried or submerged tubes service at temperatures: Type 1: -20°C/+80°C;Type 2: +20°C/+110°C. Consideration shall be given to the thermal stability ageing performance. The coatingg in this standard can beapplied to longitudinally or spirally welded and to seamless steel tubes and components used for the construction of pipelines for conveying liquids or gases. Tubes coated with this type of coating may be further protected by means of cathodic protection.