FBE Coating Pipe | Fusion Bonded Epoxy Coating
FBE (Fusion Bonded Epoxy) Coating Pipe
Fusion Bonded Epoxy (FBE) is a type of anti-corrosive coating that’s applied to the surface of steel pipes to protect them from corrosion. It’s widely used in the oil and gas industry, among others, to prevent rust and corrosion in pipelines.
FBE Coating Pipe Introduction
| Product: | FBE (Fusion Bond Epoxy) Coated Pipe, Epoxy Coated Carbon Steel Pipe |
| Application: | Used for Coal mine,heat and power plant,oil and gas transmission |
| Standard: | DIN30670,CAN/CSA-Z245.21 |
| Size: | OD:219-2000MM |
| Pakcing: | in bundles, in loose, Nylon Strip for each bundle for piece pipe |
| Color | RAL colors coating powder |
| Service: | anti-chemical corrosion and water resistance strong |
Thickness Of FBE Coating Pipe
minimum 125 µm epoxy layer thickness
minimum 150 µmco-polymer layer thickness
minimum thickness of 1.8 mm to 4.7 mm polyethylene or polypropylene layer
minimum total layer thickness range
| M kg/m | Layer thickness in mm | ||||||||
| Class A1 | Class A2 | Class A3 | Class B1 | Class B2 | Class B3 | Class C1 | Class C2 | Class C3 | |
| M ≤ 15 | 1,8 | 2,1 | 2,6 | 1,3 | 1,8 | 2,3 | 1,3 | 1,7 | 2,1 |
| 15 < M ≤ 50 | 2,0 | 2,4 | 3,0 | 1,5 | 2,1 | 2,7 | 1,5 | 1,9 | 2,4 |
| 50 < M ≤ 130 | 2,4 | 2,8 | 3,5 | 1,8 | 2,5 | 3,1 | 1,8 | 2,3 | 2,8 |
| 130 < M ≤ 300 | 2,6 | 3,2 | 3,9 | 2,2 | 2,8 | 3,5 | 2,2 | 2,5 | 3,2 |
| 300 < M | 3,2 | 3,8 | 4,7 | 2,5 | 3,3 | 4,2 | 2,5 | 3,0 | 3,8 |
| Please note: The total required thickness may be reduced for SAW pipes by a maximum of 10% on joint seam. Class 1 and 2 for medium and light applications (sandy soil). Class 3 – application in extreme conditions (rocky soil) or underwater. |
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Structure of FBE Coated Pipe
An FBE coated pipe typically has two layers:
- Steel Pipe: The primary material that transports substances such as oil, gas, or water.
- FBE Coating: A layer of epoxy powder is applied to the pipe to protect the steel from corrosion. The thickness of the FBE layer can vary depending on the requirements but is generally between 250 and 500 microns.
Process of FBE Coating
The process of applying FBE coating to a pipe involves several steps:
- Surface Preparation: The pipe surface is prepared through a process called abrasive blasting to remove any oil, grease, mill scale, rust, or other contaminants. This creates a rough surface profile that allows the FBE coating to strongly adhere to the pipe.
- Heating: The pipe is then heated to a high temperature, typically around 230-250°C (446-482°F), in preparation for the FBE application.
- Powder Application: The epoxy powder is applied to the hot pipe using an electrostatic spray gun. The heat causes the powder to melt and form a uniform layer on the pipe surface.
- Curing: The coated pipe is allowed to cool, during which time the epoxy cures and forms a solid, hard, and chemically resistant layer.
Advantages of FBE Coating
FBE coating offers several benefits:
- Corrosion Protection: It provides excellent protection against corrosion, extending the life of the pipe.
- Chemical Resistance: FBE coating is resistant to various chemicals, making it suitable for transporting different types of substances.
- Smooth Surface: The FBE coating provides a smooth surface on the pipe, which can improve flow efficiency.
- Adherence: FBE coating has strong adhesion to steel, providing a long-lasting protective layer.
Standards for FBE Coating
The application of FBE coating on pipes is guided by international standards such as:
- NACE RP0394: This standard provides guidelines for the use of protective coatings for corrosion control of underground systems.
- ISO 21809-2: This standard specifies the requirements for the qualification, application, testing, and handling of materials for plant-applied single layer fusion-bonded epoxy (FBE) external coatings for the corrosion protection of bare steel pipe for use in pipeline transportation systems.
APPLICATIONS
Minimum thickness of finished coating
| Pipe Sizes (Specified OD) | Minimum Coating Thickness Chart (mm) |
| ≤ 10 3 /4” (273.1 mm) | 2.5 |
| > 12 3 /4” ( 323.9 mm) to ≤ 18” (457 mm) | 2.8 |
| > 20″ (508.0 mm) to ≤ 30″ (762 mm) | 3.0 |
| > 32″ (813.0 mm) | 3.3 |
Thickness of FBE coating on steel pipes
| DN (mm) | Epoxy Powder (μm) | Adhesive Layer (μm) | Min. Thickness on The Coating (mm) | |
| Common Level (G) | Strengthen Level (S) | |||
| DN ≤ 100 | ≥120 | ≥170 | 1.8 | 2.5 |
| 100 < DN ≤250 | 2.0 | 2.7 | ||
| 250 < DN < 500 | 2.2 | 2.9 | ||
| 500 ≤DN < 800 | 2.5 | 3.2 | ||
| DN ≥ 800 | 3.0 | 3.7 | ||
How does the cost of FBE coating compare to other types of coatings?
The cost of Fusion Bonded Epoxy (FBE) coating can vary depending on a number of factors such as the thickness of the coating, the size of the pipe, and the specific application requirements. However, generally speaking, FBE coating is considered to be a cost-effective solution for corrosion protection, particularly in comparison to some other types of coatings.
Here are some general comparisons:
FBE vs. 3LPE (Three-Layer Polyethylene) or 3LPP (Three-Layer Polypropylene): FBE is generally less expensive than 3LPE or 3LPP coatings. This is because the process of applying a three-layer coating is more complex and time-consuming than the single-layer FBE coating process. However, 3LPE and 3LPP coatings may offer superior performance in certain applications, such as higher temperature environments or more aggressive soil conditions.
FBE vs. Galvanizing: FBE coating is typically more expensive than galvanizing. However, FBE often offers superior corrosion protection, particularly in harsh environments. Additionally, FBE can be applied in a wider range of thicknesses, allowing for greater control over the level of protection provided.
FBE vs. Internal Coatings (like Liquid Epoxy): For internal pipe coatings, liquid epoxy can often be less expensive than FBE. However, the choice between FBE and liquid epoxy will also depend on the specific application requirements.
It’s important to note that while the initial cost is a key consideration, the total lifecycle cost should also be considered. This includes the cost of potential maintenance, repairs, or replacement if the coating fails to provide adequate protection. In many cases, spending more upfront on a high-quality coating like FBE can result in significant cost savings over the long term.
Corrosion prevention of pipes refers to measures to slow down or prevent corrosion and deterioration of pipes under the chemical or electrochemical action of the internal and external media or by the metabolic activities of microorganisms.
A concrete coated pipe, also known as a concrete weight coating pipe (CWC pipe), is a steel pipe that has been externally coated with concrete. The concrete coating consists of a mixture of cement, aggregates, reinforced steel mesh, and water. The purpose of this coating is to provide strong downward force protection or negative buoyancy for the pipelines. These pipes are commonly used in sub-sea (submarine) pipelines, as the concrete coating adds the necessary weight to withstand the pressure of seawater.
Pipe Type: FBE (Fusion Bond Epoxy) Coated Pipe, Epoxy Coated Carbon Steel Pipe,Single-layer Anti-corrosion Epoxy Powder Pipe,Double Layer FBE Coating Pipes Application: Used for natural gas, petroleum, water & sewage, and pipe systems
A hard, mechanically strong top coating for all fusion bonded epoxy pipeline corrosion protection coatings. It is applied to the base coating to form a tough outer layer that is resitant to gouge, impact, abrasion and penetration. abter steel is specifially designed to protect the primary corrosion coating from damage during pipeline directional drilling applications, bored, river crossing and installation in rough terrain.
Electric Fusion Welding (EFW steel pipe) refers to an electron beam welding, the use of high-speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt, the formation of the weld. It is mainly used for welding dissimilar steel welding sheet or which high power density, metal weldment can rapidly heated to high temperatures, which can melt any refractory metals and alloys. Deep penetration welding fast, heat-affected zone is extremely small, so small performance impact on the joints, the joint almost no distortion. But it has a requirement on a special welding room because welding using X-rays.
3PE, which stands for "Three-Layer Polyethylene," is a common coating used to protect steel pipes from corrosion and extend their service life, especially in applications where the pipes are exposed to harsh environments, such as in the oil and gas industry
