Introduction
Pipelines are engineered to withstand extreme conditions—from deep-sea pressures to corrosive soils—but even the strongest systems have vulnerable points. One of the most critical areas in pipeline integrity is the field joint, where two coated pipe sections are welded together during installation.
At Keldori Services Limited, we understand that these joints, if not properly protected, can become the weak link in an otherwise robust pipeline system. That’s why Field Joint Coating (FJC) is a cornerstone of our corrosion prevention and pipeline protection services.
What Are Field Joints?
Field joints are the exposed sections of steel between factory-applied coatings on individual pipe segments. During pipeline installation, these joints are welded together, leaving a small uncoated area that must be protected to maintain continuous corrosion resistance.
Without proper coating, these joints are susceptible to:
- Corrosion and rust formation due to moisture and oxygen exposure.
- Mechanical damage during handling and backfilling.
- Thermal stress from temperature fluctuations.
- Chemical attack from soil or seawater environments.
Why Field Joint Coating Matters
Even a single unprotected joint can compromise the entire pipeline system. Effective field joint coating ensures:
- Continuous corrosion protection across the entire pipeline length.
- Structural integrity under mechanical and thermal stress.
- Extended service life and reduced maintenance costs.
- Compliance with international standards for oil and gas infrastructure.
At Keldori Services Limited, we treat field joint coating as a precision operation—every joint is inspected, prepared, and coated to the highest quality standards.
Common Field Joint Coating Methods
We employ several advanced techniques depending on project requirements and environmental conditions:
1. Heat-Shrink Sleeves
A polymer sleeve is wrapped around the joint and heated to form a tight, waterproof seal. Best for: Onshore pipelines and moderate environments.
2. Liquid Epoxy Coatings
Two-part epoxy systems are applied directly to the joint, forming a durable, corrosion-resistant layer. Best for: High-temperature and chemically aggressive environments.
3. Polyurethane Coatings
Flexible and abrasion-resistant, polyurethane coatings provide excellent mechanical protection. Best for: Pipelines exposed to impact or movement.
4. Fusion Bonded Epoxy (FBE)
Applied using heat and electrostatic methods, FBE offers strong adhesion and long-term corrosion resistance. Best for: Offshore and subsea applications.
5. Polyethylene (PE) and Polypropylene (PP) Systems
Multi-layer coatings combining adhesive and polymer layers for superior protection. Best for: Deep-water and high-pressure environments.
Keldori’s Expertise in Field Joint Coating
Our team at Keldori Services Limited combines technical precision with field experience to deliver reliable coating solutions. We provide:
- Surface preparation and cleaning using advanced blasting techniques.
- Application of coating systems tailored to project specifications.
- Quality assurance testing including adhesion, thickness, and holiday detection.
- Integration with mainline coatings for seamless protection.
Whether onshore or offshore, we ensure every joint meets the same high standards as factory-applied coatings.
The Keldori Advantage
- ISO 9001:2015 Certified Processes ensuring consistent quality and safety.
- Experienced Technicians trained in international coating standards.
- Custom Solutions for unique environmental and operational challenges.
- End-to-End Support from design to inspection and maintenance.
Our field joint coating services are trusted by leading oil and gas operators across Nigeria and West Africa.
Conclusion
Field joints may be small, but their impact on pipeline integrity is enormous. Proper coating is essential to prevent corrosion, maintain safety, and ensure long-term performance.
At Keldori Services Limited, we deliver field joint coating solutions that protect pipelines from hidden weak points—because in the oil and gas industry, every joint matters.
📞 Contact us today to learn how our field joint coating services can enhance your pipeline protection strategy.