**Coatings and Linings**
When it comes to large-bore piping, especially those destined for long service lives in demanding environments, protective coatings are non-negotiable. These coatings shield the pipe from both corrosive elements and physical wear and tear, ensuring durability and reliability. At [Your Company Name], we specialize in offering tailored coatings and linings that meet your specific needs while adhering to industry standards.
Our product offerings include:
- **Polyethylene Coating**: Ideal for general-purpose applications.
- **Polypropylene Coating**: Best suited for elevated temperature scenarios.
- **Fusion Bonded Epoxy (FBE)**: Known for its robust adhesion properties.
- **Epoxy Lining**: Specifically designed for gas pipelines to enhance flow efficiency.
All our coatings are meticulously applied to ensure longevity and performance. For instance, before applying any coating or lining, our pipes undergo rigorous preparation steps such as high-pressure water cleaning. This ensures a clean surface for optimal adhesion.
**Polyethylene (PE) Coating Process**
The process begins with drying the pipes, followed by external shot blasting to achieve a surface quality of SA 2.5. Once cleaned, the pipes are induction-heated to around 220°C. An electrostatically sprayed epoxy (EP) primer is then applied, ranging from 60 to 255 microns thick. Next, an adhesive foil, typically 125 to 400 microns thick, is wrapped around the epoxy layer. Finally, a polyethylene foil is applied over the adhesive. To provide temporary corrosion protection at the tube ends, they remain uncoated. For extended outdoor storage, the transition area from the chamfered PE to the bare pipe can also receive a bitumen coating.
**Polypropylene (PP) Coating Process**
For environments exceeding 80°C, the choice shifts toward a three-layer PP coating system. Similar to the PE system, the PP layers are applied sequentially after thorough preparation. The primary difference lies in the third layer, which uses polypropylene for enhanced heat resistance. Again, the tube ends remain uncoated for temporary protection, with optional bitumen coating for the transition areas.
**Fusion Bonded Epoxy (FBE)**
In this method, epoxy powder is electrostatically deposited onto the pipe's surface after it has been shot-peened to SA 2.5 and heated to 240°C. This results in a durable, corrosion-resistant layer that adheres exceptionally well to the metal substrate.
**Epoxy Lining**
Designed specifically for gas pipelines, API RP 5L2 epoxy resin lining reduces internal surface roughness, minimizing flow resistance and boosting transmission efficiency. By smoothing out the interior walls of the pipe, this lining significantly improves operational efficiency while extending the pipeline’s lifespan.
Beyond these standard offerings, we also cater to unique client requests with customized coatings and linings. Whether you need assistance with offshore installations, underground utilities, or high-temperature industrial processes, our team is here to deliver solutions tailored to your exact specifications. Contact us today to discuss how we can support your project!
Guangdong Heidler Technology Co., Ltd , https://www.hyhemit.com