1420mm Large-Diameter High-Speed Intelligent 3PE Coating Equipment for Steel Pipe Production Line

The external 3PE anti-corrosion system features a three-layer structure: an epoxy powder (FBE) base layer for superior corrosion resistance, a copolymer adhesive layer for strong interlayer bonding, and an outer polyethylene layer for excellent mechanical protection.

The internal surface is coated with liquid epoxy to effectively resist corrosion from transported media.

This integrated protection system significantly extends pipeline service life and is widely applied in oil, gas, and water transmission projects.

The external 3PE (Three-layer Polyethylene) anti-corrosion system consists of a three-layer composite structure: a fusion-bonded epoxy (FBE) powder primer provides fundamental corrosion resistance, an intermediate copolymer adhesive layer ensures high interlayer bonding strength, and an outer polyethylene (PE) layer provides excellent mechanical protection. The inner wall is coated with liquid epoxy, forming a dense barrier that prevents corrosion erosion from transported media (oil, gas, water). This combined inner-and-outer protection scheme offers synergistic, durable, and long-lasting performance, significantly extending the service life of steel pipes, and is widely applied in pipeline projects such as oil/gas transportation and municipal water supply and drainage. 
 

Engineered for performance and efficiency, Huashida's 3PE coating line is designed to maximize your production value.

With a space-saving layout and optimized process design, it significantly improves production efficiency while reducing factory footprint. The line achieves up to 800 square meters per hour, delivering 2 to 3 times the efficiency of conventional systems.

Backed by mature technology and a stable formulation, the system ensures one-time successful commissioning with zero defective pipes, providing reliable and consistent output from day one.

Fully compliant with international standards such as EN, DIN, and NORSOK, it meets the requirements of global pipeline projects. At the same time, its energy-efficient and environmentally friendly design helps reduce consumption and optimize material recycling.

From design and manufacturing to installation, commissioning, and training, Huashida provides a complete one-stop solution, supported by dependable after-sales service to ensure long-term, stable operation.

The anti-corrosion coating processing line includes:
-steel pipe transmission system
-Internal and external shot blasting system
-dust collection system
-pipe heating system
-electrostatic spraying system
-PE coating system
-water cooling system
-end cutting system
-hydraulic and pneumatic system
-testing system
-electronic control system

Upload pipes→pipes screw conveyor→inernal rust removal →external rust removal→ intermediate frequency heating→Internal Epoxy powder coating→External Epoxy powder coating→ outer layer adhesive polyethylene coating→cooling spray→pipes screw conveyor→grinding pipe ends→dowload pipes
 

1. Pipe diameter: 25-4200mm
2. Processing capacity: ≥250m²/h
3. Cleaning level: ≥Sa2.5
4. Materials for production: epoxy powder, adhesive, polyethylene

Qingdao Huashida Machinery Co., LTD., founded in 2003, is a global developer, manufacturer and solution provider of plastic extrusion equipment. 70% of its customers come from overseas countries such as Europe, America, the Middle East and Southeast Asia.
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