Your Professional Pipe Coating Supplier
Sunlion Piping Engineering Co., Ltd. is a global supplier of piping systems and structural steel modules for energy, petrochemical, offshore, nuclear, and heavy industrial projects. With over 20 years of international project experience, Sunlion delivers vertically integrated solutions from raw materials to finished modules. The company serves leading EPC contractors and end users worldwide, providing compliant products, modular fabrication, inspection coordination, and OEM/ODM customization to support efficient and reliable project execution.
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![Pipe Lining and Coating]()
Pipe Lining and CoatingOur pipe lining coating system is a high-performance corrosion protection solution designed for industrial piping. pipelining and coatin. By applying multi-layer organic or inorganic coatings on -
![Galvanized Tube Fittings]()
Galvanized Tube FittingsOur product range includes hot-dip galvanized (HDG) steel structures, galvanized tube fittings, widely used in construction, power, telecom, transportation, municipal, oil & gas, and offshore
why choose us
Quality Control
All products are manufactured to recognized standards such as ASME, DIN, GB, and JIS and undergo coordinated inspection and testing by third-party organizations such as SGS to ensure traceability and consistent quality.
Customization Services
We offer OEM and ODM services, tailored to project requirements, including material grades, dimensional tolerances, marking systems, packaging methods, and documentation, to meet both standardized and project-specific engineering needs.
Integrated Supply Chain
We manage the entire supply chain, from steel pipe sourcing to prefabricated piping and structural modules. This integrated model simplifies procurement coordination, improves schedule control efficiency, and minimizes interface risks between multiple suppliers in complex projects.
Sales Markets
With over two decades of experience executing international projects, we have delivered materials and modules to projects in the Middle East, Australia, the Americas, Africa, and Europe, supporting EPC general contractors under various technical standards and logistical conditions.
Specification
|
Specification Item |
Details |
|
Product Name |
Pipe Lining and Coating |
|
Purpose |
Corrosion protection for steel pipes |
|
Applicable Materials |
Carbon steel, stainless steel, alloy steel |
|
Coating Types |
Epoxy, polyurethane, inorganic zinc, FBE, 3LPE/3LPP |
|
Pipe Diameter Range |
15 – 3000 mm |
|
Temperature Range |
-50°C to 400°C |
|
Dry Film Thickness |
200 – 600 µm (varies with coating type) |
|
Application Methods |
Airless spray, brushing, rolling, electrostatic powder |
|
Application Scenarios |
Onshore, offshore, underground, field joints |
|
Typical Use |
Oil & gas, chemical, power, municipal pipelines |
Pipe Coating Function
Corrosion Protection
Anti-corrosion is the most basic and important function of pipeline coating. The coating can isolate the pipeline from the corrosive soil, air and water in the outside world, thereby preventing corrosion and extending the service life of the pipeline.
Keep warm/cold
For some media that need to be kept warm or cold, we can use heat-insulating/cold-insulating Pipeline coatings to reduce heat/cold loss during transportation.
Protection against mechanical damage
Coated pipe is compared with uncoated pipe. Coated pipe is equivalent to adding a layer of protective film on the surface of the pipe, which can prevent external force damage during use or transportation and protect the pipe body.
CP Compatibility
High-quality pipeline coatings have electrical insulation properties and work in conjunction with the cathodic protection system to protect the required current and provide dual protection for the pipeline.
Flow Efficiency
Most people think of outer coatings when they think of pipe coatings. In fact, there is also inner coating. Although the inner coating is not so eye-catching, it silently protects the pipe. The inner coating can make the inner wall of the pipe smooth, reduce flow resistance, and improve work efficiency.
Identification and warning
As we all know, most pipelines are opaque, so how can we know what media is being transported in them? Pipe coatings can be used. Different coatings represent different media. Flammable, explosive, and corrosive media can be specially marked to improve safety and facilitate identification and management.
Extend service life
Whether it is anti-corrosion, insulation or mechanical protection, all of the above functions have only one common purpose – to extend the service life of the pipeline. Although the initial coating makes the cost higher, it prolongs the service life, reduces the cost of subsequent maintenance, and extends the replacement cycle.
Pipe Coating Thickness
|
Steel Thickness (mm) |
Min Avg. Coating Thickness (μm) |
|
< 1.5 |
45 |
|
1.5 – 3.0 |
55 |
|
3.0 – 6.0 |
70 |
|
> 6.0 |
85 |
Types of Pipe Coating
Fusion Bonded Epoxy (FBE)
Fusion bonded epoxy is one of the most popular pipe coatings due to its strong adhesion and exceptional corrosion resistance. This coating creates a hard, durable layer that protects pipes from harsh environmental elements, making it ideal for both underground and underwater applications.
Polyethylene Coating
Polyethylene coating is flexible and highly resistant to abrasion, making it an excellent choice for pipes that are exposed to physical wear. It also provides some chemical resistance, though not as robust as epoxy coatings.
Coal Tar Enamel Coating
Coal tar enamel coatings are known for their excellent protection against corrosion, especially in harsh environments. This type of coating is commonly used in areas that are exposed to water, soil, and chemicals.
Polyurethane Coating
Polyurethane coatings are primarily used for their excellent UV resistance and high durability. They provide strong protection against outdoor elements and can also resist abrasion and chemicals.
Phenolic Coating
Phenolic coatings are highly effective at withstanding high temperatures and aggressive chemicals, making them suitable for demanding industrial applications. They provide excellent protection against corrosion and can handle high-pressure conditions.
Pipe Coating Applications
Oil and Gas Industry
The oil and gas industry is the largest market for pipeline coatings. Some oil and gas pipelines and submarine pipelines require highly corrosion-resistant coatings.
Marine Engineering
Subsea oil/gas pipelines, submarine cable protection pipes, and other applications require coatings for protection. 60% of submarine pipeline failures are related to coating defects.
Municipal Engineering
Water supply and drainage, heating networks, and other facilities re
Chemical Industry
Transports various corrosive media such as acids and alkalis.
Customization Services
We offer customized pipe coating manufacturing solutions to meet your needs. Key customization options include:
|
Coating Type |
Customizable |
|
Dry Film Thickness |
Customizable |
|
Application Method |
Customizable |
|
Surface Preparation |
Customizable |
|
Our customization capabilities extend beyond the options listed above. Should you have additional requirements, we are able to make flexible adjustments in accordance with your specific needs and circumstances. |
|
FAQ
As one of the most professional pipe coating manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please rest assured to wholesale high-grade pipe coating at competitive price from our factory. Contact us for more details.
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