External Coating
Your Professional External Coating Supplier
Octal Pipe is a professional and integrated supplier of oilfield products and industrial steel solutions based in China. With extensive experience in supply, distribution, and manufacturing, we specialize in providing a wide range of steel materials for the oil & gas, energy, and industrial sectors.
Why Choose Us
Superior Quality Assurance
Our steel pipes undergo rigorous testing and adhere to international standards, ensuring unmatched durability, corrosion resistance, and performance in extreme conditions.
Certificates
Every product is backed by full material traceability, mill certificates, and compliance with international standards such as API, ASTM, ASME, EN, and ISO.
Competitive Pricing
We deliver premium-grade steel pipes at reasonable costs, optimizing value through efficient manufacturing and supply chain management without compromising on quality.
Fast & Reliable Delivery
Leveraging efficient sea freight logistics and a global network, we ensure timely ocean shipping of steel pipes, minimizing delays and keeping your industrial operations on schedule.
FBE Coated Steel Pipe is a type of steel pipe coated with epoxy resin (FBE), widely used in industries such as oil, gas, water, and other liquid or gas transportation pipelines. The FBE coating is applied by coating the steel pipe surface with epoxy resin and then curing it through heating to form a strong protective layer that enhances the pipe’s resistance to corrosion. This coating effectively prevents corrosion from external environmental factors like water, soil, and salts, significantly extending the service life of the pipe.
● System: Single-layer Fusion Bonded Epoxy (FBE)
● Standards: ISO 21809-2, AWWA C213, CSA Z245.20
● Pipe Range: ½″ – 48″ (custom up to 60″)
● Coating Thickness: 250 – 500 μm
● Operating Temp: -30°C to +95°C
● ISO 21809-2 – Factory-applied FBE for buried or submerged pipelines
● AWWA C213 – FBE coating for water pipelines
● CSA Z245.20 – Fusion-bonded epoxy for steel pipe
● NACE SP0102 – Application and inspection practices
● Pipe Range: Seamless, ERW, LSAW, SSAW
● OD: ½″ – 48″ (custom up to 60″)
● Coating Thickness: 250 – 500 μm
● Operating Temperature: -30°C to +95°C
FBE Coating Process
Surface Preparation
Abrasive blasting to Sa 2½, anchor profile 50–100 μm
01
Heating
Induction or furnace heating to 200–250°C
02
Powder Application
Electrostatic spray of epoxy powder
03
Fusion & Curing
Epoxy melts, crosslinks, bonds chemically to steel
04
Cooling & Inspection
Controlled cooling, thickness checks, holiday test
05
Minimum Thickness of Finished FBE Coating Pipe
|
Pipe Sizes (Specified Outside Daimeter) |
Min Coating Thick Chart in (MM) |
|
≤ 10 3 /4 (273.1 MM) |
2.5 |
|
32 (813.0 MM) |
3.3 |
|
12 3 /4 ( 323.9 MM) to ≤ 18 (457 MM) |
2.8 |
|
20 (508.0 MM) to ≤ 0 (762 MM) |
3 |
|
Properties |
Requirement |
|
Moisture Content |
0.5% |
|
Density |
1.2 ~ 1.8g/cm3 |
|
Theoretical Coverage |
0.6993 m2/kg per mm (134.6 ft2/lb per mil) |
|
On Sieve |
150μm powder on sieve ≤3% , 250μm powder on sieve ≤0.2% |
|
Particle Size |
Larger than 250um 0.2% Larger than 150um 3.0% |
|
Film Thinkness |
a.In FBE Systems: 300-400 µm (12-16 mils) b.As a primer in 3-layer PE or PP systems: 150-300 microns (6-12 mils) |
|
Operating Temp. Range |
-73ºC (-100°F) to 110°C (230°F) |
|
Thermal properties |
ΔH ≥ 45J/g , Tg2 ≥ 95℃ |
3PE and FBE Coating Differences
The material structure of 3PE and FBE coating pipes affects their performance indicators, which need to be tested for their performance.
|
Test |
FBE Coating |
3PE Coating |
|
Adhesion Strength |
≥10 MPa (ASTM D4541) |
≥15 MPa (ISO 4624) |
|
Impact Resistance |
1.5 J (ISO 6272) |
25 J (ISO 6272) |
|
Cathodic Disbondment |
≤8 mm (48h, ASTM G8) |
≤5 mm (48h, ISO 15741) |
|
Water Permeability |
0.5–1.0 g/m²/day |
<0.1 g/m²/day |
|
UV Resistance |
Poor (requires topcoat for sunlight) |
Excellent (PE layer blocks 99% UV) |
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