3LPE/3LPP coating
Three-Layer Polyethylene (3LPE) and Three-Layer Polypropylene (3LPP) coatings provide robust, corrosion-resistant protective layers for pipes used in various industries, including oil, gas, water infrastructure, the chemical industry, offshore, and marine. The systems consist of three separate layers: a corrosion protective layer, an adhesive layer, and a topcoat layer. The base of these systems is the Fusion Bonded Epoxy (FBE) layer, which offers excellent corrosion resistance and serves as a strong foundation for subsequent layers. The 3LPE system uses polyethylene as the top layer, while the 3LPP system uses polypropylene. These multi-layer systems offer high-performance protection against environmental and mechanical stresses, ensuring the durability and reliability of pipes throughout their lifecycle.
Solution:
Using Selmers’ high-output and broad range extruders, both the 3LPE and 3LPP coating processes apply an adhesive layer and a top-coat layer over a Fusion Bonded Epoxy (FBE) primer. The FBE layer is electrostatically applied as a powder and then cured to form a durable, corrosion-resistant base coat. These multi-layer systems are designed for a variety of pipe diameters and offer unmatched protection against corrosion, moisture, chemicals, and physical damage.
- FBE Process: Applied as a powder to pre-heated pipes, FBE melts and cures into a tough, thermoset protective layer, forming the essential base for multi-layer coating systems.
- 3LPE Solution: The process applies an adhesive layer and a top-coat layer of polyethylene over the FBE primer.
- 3LPP Solution: The process applies an adhesive layer and a top-coat layer of polypropylene over the FBE primer.
Both systems provide superior mechanical protection and are suitable for a wide range of pipe diameters.
Key Features:
- Dedicated Extruder Design: Tailored for optimal pipe coating applications, accommodating various materials including high and low-density PE, PP, and PP foam.
- Complete Process Lines: Selmers offers complete lines, including pipe handling, heating, quenching, pipe-end cleaning, and blast lines.
- Customer Flexibility: Solutions for a wide range of pipe diameters and customer-specific preferences, such as extrusion application from the side or top.
- Versatile Applications: Suitable for coating with PE, PP, and PP foam, making both 3LPE and 3LPP systems adaptable to various coating needs.
- High Output: Capable of handling large and small pipe diameters efficiently with powerful motors and high throughput capabilities.
Benefits:
- Customized Extrusion: Selmers’ extruders are specifically designed for both 3LPE and 3LPP pipe coating applications, ensuring superior performance and reliability.
- User-Friendly Interface: Simple operation with an HMI panel to control temperatures and screw speeds, streamlining the coating process.
- One-Stop Shopping: Offering both individual machines and complete pipe coating plants with all necessary automation.
- Multi-Purpose Design: Flexibility to process different materials with the same extruder, reducing downtime and simplifying operations.
- Cost Efficiency: Proven cost-effective solutions, reducing operational expenditures and enhancing the overall value of the coating system.
- Know-How: With decades of experience, Selmers provides valuable expertise, ensuring optimal performance in every installation and operation.
How It Works:
After a pipe is loaded onto the conveying system, it accelerates to match the previous pipe’s speed, ensuring consistent processing. The pipe is heated to the required temperature, and the 3LPE or 3LPP coating is applied. The coated pipe then moves through the quenching tunnel to cool and solidify the coating, ready for further handling without damaging the protective layers.
The Full Scope:
- Complete 3LPE and 3LPP coating lines, including pipe handling/conveying systems, heating systems, and quenching tunnels.
- Additional equipment for blast cleaning, acid wash, pipe-end cleaning, and more.
- Optional features to enhance safety and reduce labor requirements, along with advanced automation options like the Selmers Plant Management System (SPMS).
- Automation Capabilities: With Selmers’ Plant Management System (SPMS), automation further enhances efficiency, streamlining the entire process and improving overall plant performance.
Product Range:
- Diameter Range: Supports pipe diameters from 4½” to 144” for wrap extrusion processes and 2⅜” to 24” for sleeve extrusion processes.
- Pipe Lengths: Up to 25.6 meters.
- Pipe Wall Thickness: Up to 2” (50.8 mm).
- Plant Capacity: Up to 1,000 m²/hr.
- Automation Levels: From low to high automation, offering flexibility for various project needs.
Filterable Properties:
At Selmers, we specialize in advanced industrial machinery and automation for coating and handling pipes and tubes. With over 50 years of experience, we have grown into a trustworthy supplier of numerous automated solutions. Collaboration is key to creating real magic. Interested in optimizing performance and reducing risks?
