Coating

Pipe coating is the application of a protective layer to a pipe's surface to prevent corrosion and extend its lifespan, which also improves flow capacity and reduces energy use. Common methods include external coatings like polyethylene (PE) and fusion-bonded epoxy (FBE), and internal coatings such as epoxies and specialized paints.

Types of pipe coatings

1. External coatings:

- Three-layer polyethylene (3LPE): These are common for external protection and consist of a corrosion-resistant FBE primer, an adhesive tie layer, and a final polyolefin (PE or PP) layer for mechanical strength and protection.

- Glass flake coatings: These are ideal for harsh chemical environments and have high resistance to abrasion and erosion.

2. Internal coatings:

- Epoxy coatings: Applied to prevent corrosion from internal fluids and are used in gas, water, and oil transmission lines