External 3LPE And Internal Epoxy Coating Line Epoxy Resin Powder Anti-Corrosion 1620-4200mm
Product Description
Qingdao Huashida's External 3LPE and Internal Epoxy Coating Line for Anti-Corrosion
Qingdao Huashida has developed an advanced coating line that combines external 3LPE (three-layer polyethylene) and internal epoxy resin powder coating for steel pipes. This production line is designed to provide excellent anti-corrosion protection for steel pipes with diameters ranging from 1620 mm to 4200 mm.
Product Introduction
The coating line is an integrated system that applies a high-quality 3LPE coating on the exterior of the steel pipe and an epoxy resin powder coating on the interior. The 3LPE coating consists of a fusion-bonded epoxy primer, an adhesive layer, and a polyethylene outer layer. This combination ensures long-term durability and resistance to environmental factors such as moisture, chemicals, and UV radiation. The internal epoxy resin powder coating provides a smooth, protective barrier against corrosion and wear.
Performance
This coating line offers outstanding performance in terms of corrosion resistance. The 3LPE coating has excellent adhesion to the steel surface, ensuring that it remains intact even under harsh conditions. The epoxy resin powder coating on the inside of the pipe forms a uniform, durable layer that prevents rust and extends the service life of the steel pipe. The overall system is designed to withstand high temperatures, pressures, and mechanical stresses, making it suitable for a wide range of applications.
Application Scenarios
This coating line is ideal for steel pipes used in various industries. It is commonly used in the oil and gas industry for pipelines that transport oil, natural gas, and other fluids. The anti-corrosion properties of the coating ensure that the pipes remain reliable and safe over long distances and extended periods. It is also suitable for water supply systems, where the internal epoxy coating prevents contamination and corrosion from water. Additionally, it can be used in construction projects, such as underground utility lines, where the pipes need to withstand soil and environmental pressures.
Advantages
One of the main advantages of this coating line is its high efficiency. It can coat steel pipes of different diameters quickly and uniformly, ensuring consistent quality. The advanced technology used in the coating process ensures that the coatings are applied evenly, reducing the risk of defects and improving the overall performance of the coated pipes. Another advantage is the environmental friendliness of the coating materials. The epoxy resin powder and 3LPE coatings are designed to be safe for the environment and comply with industry standards. This makes the coated pipes suitable for use in sensitive areas, such as near water sources or in environmentally protected zones.
In summary, Qingdao Huashida's external 3LPE and internal epoxy coating line is a reliable and efficient solution for steel pipe anti-corrosion. With its excellent performance, wide range of applications, and numerous advantages, it is an ideal choice for industries that require durable and corrosion-resistant steel pipes.
Detailed Photos

Key Features and Advantages
1. Advanced Technology and Process
-Integrated Systems: The processing line includes comprehensive systems for steel pipe transportation, surface treatment, dust collection, pipe heating, electrostatic spraying, coating application, water cooling, edge cutting, hydraulic and pneumatic devices, detection, and electrical control.
- Efficient Workflow: The technological process is streamlined to ensure high efficiency and quality. It includes uploading pipes, screw conveyor transport, rust removal through intermediate frequency heating, epoxy powder coating, outer layer coating, cooling, grinding, and unloading.
2. High Production Capacity
Maximum Output: The processing line can achieve a maximum production output of 3 to 8 km per day, with an annual processing capacity of up to 2 million square meters (for pipes with a diameter of Φ508 mm).
Coating Thickness Control: The coating thickness can be precisely controlled within the range of 80 to 800 micrometers, ensuring consistent quality and performance.
3. Environmental and Safety Considerations
Dust Collection and Ventilation : The line features cyclone dust collectors, pulse dust collectors, and environmental protection ventilation equipment to minimize dust and maintain a clean working environment.
Safety Standards : The equipment meets international standards such as SY/T0413-2002, GB/T23257-2009, German DIN 30670, DIN 30678, and American Corrosion Association specifications.
4. Global Reach and Support
International Sales and Installation: Over 50 sets of 3PE processing lines have been successfully installed and operated both domestically and internationally, including in Russia, Iran, UAE, India, Belarus, and Kazakhstan.
After-Sales Service: The company offers a 12-month warranty for mechanical parts and a 6-month warranty for electrical components. Comprehensive technical support, training, and guidance are provided to ensure smooth operation and maintenance.
Equipment Configuration and Parameters
The 3PE Anti-Corrosion Coating Processing Line comprises several key components:
Derusting Equipment: Includes pipe-conveying equipment, shot blast cleaning machines, dust collectors, exhaust fans, and PLC control systems.
- Coating Equipment: Features coating transfer systems, intermediate frequency heating devices, powder spraying devices, extruders, coating heads, and cooling spray equipment.
Platform Equipment: Consists of steel pipe platforms, transition platforms, and hydraulic equipment.
Groove Equipment : Includes PE beveling machines, hydraulic lifting and turning machinery, and PLC controls.
Compressed Air Equipment: Comprises screw air compressors, cold dry machines, precision filters, and gas tanks.
Frequently Asked Questions
1. Q: What is the range of pipe diameter the equipment can produce?
A: The equipment can handle steel pipes with diameters ranging from1620mm to 4200 mm.
2. Q: What is the sand blasting grade?
A: The sand blasting grade is SA2.5.
3. Q: What are the anti-corrosion coating standards?
A: The coating meets SY/T0413-2002, GB/T23257-2009, German DIN 30670, DIN 30678, American Corrosion Association standards, and DNV specifications.
4. Q: What is the delivery time?
A: The delivery time is approximately 2-3 months after the deposit.
5. Q: What is the production output?
A: The maximum output is 3 to 8 km per day, with an annual processing capacity of 2 million square meters (for Φ508 mm pipes).
6. Q: What is the coating thickness?
A: The coating thickness ranges from 80 to 800 micrometers.
7. Q: To which countries have you sold your 3PE equipment?
A: We have sold nearly 50 sets of 3PE processing lines to countries such as Russia, Iran, UAE, India, Belarus, and Kazakhstan.
8. Q: What after-sales service do you provide?
A: We offer a 12-month warranty for mechanical parts and a 6-month warranty for electrical parts. We also provide technical services, training, and guidance for operators.
Conclusion
The 3PE Anti-Corrosion Coating Processing Line is a highly efficient, reliable, and versatile solution for protecting steel pipes in demanding industrial applications. With its advanced technology, high production capacity, and comprehensive after-sales support, this system ensures long-term durability and performance for steel pipes used in oil, gas, water, and other fluid transmission systems.
Packaging & Shipping
Company Profile


Exhibition
