Pipeline Internal and External Coatings

Pipelines are critical infrastructures in industries ranging from oil and gas to water and chemical transportation. However, their continuous exposure to harsh environments and the constant flow of potentially corrosive materials can significantly degrade their structural integrity over time. Kirloskar Corrocoat Private Limited (KCPL), in collaboration with Corrocoat Ltd., has developed innovative glass flake coatings that provide robust protection for both internal and external pipeline surfaces. This article delves into the details of these advanced coatings and their numerous benefits.

Internal Pipeline Coating:
  • Objective:

The primary objective of internal pipeline coatings is to protect the inner surfaces from corrosion, abrasion, and chemical attack, thereby ensuring smooth operation and longevity of the pipelines.

  • Challenges:

- Constant exposure to transported fluids, which can be corrosive or abrasive.
- Stagnant fluid is more corrosive than a moving fluid.
- High internal pressures and varying temperatures.
- Ensuring a smooth surface to maintain efficient flow rates and reduce energy consumption.

  • Solution – Glass Flake Coatings:

Glass flake coatings offer a sophisticated solution to these challenges. These coatings are composed of micro-thin glass flakes dispersed within a durable resin matrix. The flakes overlap within the coating, creating a complex barrier that enhances protection.

  • Benefits:
1. Superior Corrosion Resistance:

The overlapping glass flakes create a tortuous path for moisture and corrosive agents, significantly reducing permeation and preventing corrosion.

2. Enhanced Abrasion Resistance:

The smooth, low-friction surface resists wear and tear from abrasive materials such as slurries and sand, extending the pipeline's operational life.

3. Chemical Resistance:

Glass flake coatings withstand exposure to a wide range of chemicals, including acids, alkalis, and solvents, protecting the pipeline from chemical attack.

4. Temperature Resistance:

KCPL’s coatings can endure high temperatures—up to 150°C when immersed and 260°C when non-immersed—ensuring reliable protection in extreme conditions.

5. Improved Flow Efficiency:

The smooth internal surface reduces friction, enhancing flow rates and reducing energy consumption.

6. Extended Service Life:

In sea-water conditions, the expected service life of KCPL’s internal coatings exceeds 30 years, significantly reducing maintenance costs and downtime.


External Pipeline Coating:
  •   Objective:

External pipeline coatings are designed to shield the outer surfaces from environmental factors such as moisture, soil chemicals, and physical damage, ensuring structural integrity and safety.

  • Challenges:

- Exposure to varied environmental conditions, including moisture, UV radiation, and fluctuating temperatures.
- Risk of mechanical damage during handling, transportation, and installation.
- Long-term durability to minimize maintenance and repair costs.

  • Solution – Glass Flake Coatings:

Glass flake coatings for external surfaces provide a resilient barrier against environmental and mechanical threats. These coatings are flexible enough to accommodate thermal expansion and contraction while maintaining robust protection.

  • Benefits:
1. Moisture Barrier:

The impermeable barrier created by the glass flakes prevents moisture penetration, protecting the pipeline from external corrosion.

2. UV Resistance:

The coatings are resistant to UV radiation, preventing degradation from prolonged sun exposure.

3. Chemical Resistance:

These coatings resist attack from soil chemicals and other environmental contaminants, ensuring long-term durability.

4. Temperature Flexibility:

They can handle wide temperature fluctuations without cracking or losing adhesion, making them suitable for diverse climates.

5. Cost-Effectiveness:

Despite higher initial costs, the extended lifespan and reduced maintenance needs make glass flake coatings a cost-effective solution.

The Science Behind Glass Flake Coatings:

Glass flake coating is a high-performance coating system that utilizes specially crafted glass flakes embedded in a resin matrix. Imagine a maze of overlapping glass flakes, this is the structure of glass flake coating, a technology that shields pipelines from the ravages of time and environment. By forcing moisture and other detrimental substances to take a tortuous path, the coating drastically slows down their permeation, ensuring the long-term health and performance of these vital arteries.


Glass flake coatings from Kirloskar Corrocoat offer a technologically advanced solution for protecting both the internal and external surfaces of pipelines. By significantly enhancing corrosion resistance, abrasion resistance, and chemical resistance, these coatings ensure the longevity and optimal performance of pipelines in the most demanding environments. Invest in our glass flake coating solutions for safeguarding your pipelines against the consequences of temperature, Fluid severity and environment by improving efficiency, and ensuring safety. Contact Kirloskar Corrocoat today to discuss how coatings can meet your specific pipeline protection needs and help you achieve unmatched durability and performance.