The three-layer PE process utilizes an epoxy powder coating as the bottom layer, bonded with polyethylene (PE) and adhesive for robust anti-corrosion protection of steel pipes. This method is widely adopted both domestically and internationally for oil and gas pipelines, as well as for civil gas and water supply systems.

Technological Process:
Upload Pipes
Screw Conveyor for Pipes
Rust Removal via Intermediate Frequency Heating
Epoxy Powder Coating
Application of Outer Layer Solid Liquid & Polyethylene Coating
Cooling Spray
Screw Conveyor for Pipes
Grinding Pipes
Unload Pipes

Extended Service Life: The three-layer PE coating can extend the lifespan of steel pipes from 5-10 years to 50-100 years, greatly improving the return on investment.

Excellent Corrosion Resistance: Utilizing epoxy powder as the base layer, combined with polyethylene and adhesive, it forms a strong and effective corrosion barrier against various environmental factors.

High Mechanical Strength: The 3PE coating has good mechanical strength, enabling it to withstand external physical impacts and wear, protecting the integrity of the pipes.

Good Electrical Insulation: It possesses excellent electrical insulation properties, preventing electrical corrosion, making it suitable for power and communication pipelines.

Environmentally Friendly: The coating process minimizes pollution and does not release harmful substances, complying with modern environmental standards.

High Degree of Mechanization: The production process is highly mechanized, ensuring stable process parameters, improving production efficiency, and reducing labor intensity.

Versatile Applications: Widely applicable in oil, gas, water supply, and gas supply industries, meeting diverse market needs.

Low Maintenance Costs: Due to its durability and corrosion resistance, 3PE-coated pipelines have relatively low maintenance costs, reducing long-term operational expenses.

Strong Adhesion: The three-layer structure ensures a tight bond between the coating and the steel pipe, minimizing the risk of peeling or delamination.

Good Thermal Stability: It can withstand high and low temperature environments while maintaining excellent physical properties, suitable for various climatic conditions.

Q1. What is the size of pipe diameter your equipment can produce?
A: We can produce four main models:

Diameter 48-219mm
Diameter 219-1220mm
Diameter 800-1600mm
Diameter 1000-2400mm
Q2. What is the descaling grade?
A: SA2.5

Q3. What is your anti-corrosion coating standard?
A: Our equipment meets the following standards:

SY/T0413-2002
GB/T23257-2009
German DIN 30670, DIN 30678
Coating specifications from the American Corrosion Association and DNV
Fully compliant with SY/T0315-2005 and CNPC38-2002
Q4. What is the delivery time?
A: 2-3 months after deposit.

Q5. What is the production output?
A: The output varies by pipe diameter, with a maximum of 3 to 8 km/day and an annual processing capacity of 2 million square meters (Φ508 mm).

Q6. What is the coating thickness?
A: 80-800µm

Q7. In which countries have you sold your 3PE equipment?
A: We have produced nearly 50 sets of 3PE processing lines for countries including Russia, Iran, UAE, India, Belarus, Kazakhstan, and others.

Q8. What is your after-sales service?
A:
Warranty Period: All equipment is trial operated before delivery to ensure quality.
Mechanical Parts Warranty: 12 months from the date of pick-up.
Electrical Parts Warranty: 6 months from the date of pick-up.

Qingdao Huashida is one of the largest professional manufacturers and exporters of anti-corrosion and insulation equipment in China. With over 20 years of experience and strong R&D capabilities, we offer both standardized and customized solutions for global clients.