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What Is 3 Layers PE Powder Coating Line Used for?

Author : Hongteng Time: 2023-06-08

A steel pipes powder coating line is a process for coating metal parts or products with dry powder material. Powder coating is a popular alternative to traditional liquid coatings because it is more environmentally friendly, provides a durable finish, and is more cost-effective.

Components of a Powder Coating Line


The first step in the powder coating process is pre-treatment, which involves cleaning and preparing the metal parts for coating. This is typically done using a combination of chemicals and mechanical processes to remove any oils, rust, or other contaminants from the surface of the metal.

Powder Coating Application

Once the metal parts have been cleaned and prepped, they are ready for powder coating application. The powder coating material is sprayed onto the metal parts using an electrostatic gun, which applies a positive charge to the powder particles. This causes the powder to adhere to the metal surface, creating a uniform coating.


After the powder has been applied, the metal parts are moved into an induction heating furnace for curing. The furnace heats the metal parts to a specific temperature, which causes the powder to melt and flow together, creating a smooth, durable coating. The curing process typically takes between 10 and 30 minutes, depending on the size and thickness of the metal parts.


Once the curing process is complete, the metal parts are cooled down to room temperature before they are moved to the next stage of the process.

Quality Control

The final step in the powder coating line is quality control, which involves inspecting the finished metal parts to ensure that they meet the required specifications. This may involve checking for defects, such as bubbles or uneven coating, and making any necessary adjustments to the process.

3 Layers PE Powder Coating Line

PE (polyethylene) coating is commonly used for steel pipe anticorrosion because of its excellent chemical and physical properties. 3 layers PE powder coating line is a production line that uses PE as the material to coat the steel pipes for anticorrosion.

Hongteng 3 Layers PE Powder Coating Line

Surface Preparation

Before applying the PE coating, the steel pipe surface must be cleaned and prepared to ensure proper adhesion. This typically involves removing rust, mill scale, and other contaminants using sandblasting or chemical cleaning techniques.

Primer Application

A primer is applied to the prepared steel surface to promote adhesion between the steel and the PE coating. The primer also helps to prevent corrosion beneath the coating.

PE Coating Application

The PE coating is applied to the primed steel surface using a variety of methods, including extrusion, spraying, or wrapping. Extrusion is the most common method, where the heated pipe is passed through a die that applies a uniform layer of PE coating to the surface.


The PE coating is then cured to ensure that it adheres properly to the steel surface. This is typically done by exposing the coated pipe to high temperatures for a predetermined period.

In Summary

Steel pipes are commonly used for the transportation of fluids such as oil, gas, water, and chemicals. However, exposure to various environmental factors such as moisture, chemicals, and oxygen can cause the surface of the pipes to corrode over time. Corrosion can weaken the structural integrity of the pipes, leading to leaks, ruptures, and other safety hazards. Therefore, it is important to protect steel pipes from corrosion to ensure their long-term performance and safety.

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