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What’s FBE Coated Steel Pipe?
FBE Coated Steel Pipe utilizes a single-layer, heat-curable thermoset epoxy powder. Unlike traditional paints, FBE is a “dry” coating that creates a seamless, hard, and chemically resistant finish that bonds at a molecular level with the steel surface.
Types of FBE Coatings
- Single-Layer FBE: The standard anti-corrosion coating for gas and oil pipelines.
- Dual-Layer FBE (Abrasive Resistant Overcoat): Consists of a base FBE layer for corrosion protection and a top “tough” FBE layer to protect against rocks and abrasion during directional drilling (HDD).
Advantages of Using FBE Coated Pipe
- Superior Bonding: FBE provides the highest level of adhesion to steel, preventing moisture from getting underneath.
- Flexibility: The coating is flexible enough to withstand the “bending” of the pipe during field installation.
- Ease of Inspection: The bright green or blue color makes it very easy to spot any pinholes or holidays during holiday detection testing.
Specifications of FBE Coated Pipes
- Standards: API 5L, AWWA C213, CAN/CSA Z245.20.
- Thickness: 300 to 600 microns (μm).
- Temperature Range: Generally -30°C to 100°C.
FBE Coating Manufacturing Process
- Cleaning: Grit blasting to achieve the required surface profile.
- Heating: The pipe is heated via induction coils.
- Powder Spraying: Dry FBE powder is sprayed through electrostatic guns; the powder melts and flows into a uniform film.
- Curing: The heat from the pipe cures the epoxy, turning it into a hard, cross-linked polymer.