Product Description
The 3PE (Three-Layer Polyethylene) external coating is a high-performance anti-corrosion structure composed of fusion-bonded epoxy (FBE) as the inner layer, adhesive (AD) as the middle layer, and polyethylene (PE) as the outer layer.
It features high mechanical strength, excellent electrical insulation, stable process parameters, and environmental friendliness, and is widely used in oil and gas transportation, urban water supply, heating systems, and gas pipelines.
Technological processes
Pipe Loading → Conveying → Shot Blasting (Rust Removal) → Induction Heating → FBE Coating → AD & PE Extrusion Coating → Water Cooling → Conveying → Pipe End Grinding → Unloading
Main Equipment Composition
Surface Treatment: Shot blasting machine, cyclone dust collector, pulse dust remover
Heating System: Induction heating equipment
Coating System: FBE powder coating unit, adhesive extruder, PE extruder
Cooling System: Water spraying and cooling device
Conveying System: Pipe loading/unloading platform, turning rollers
Control System: PLC automatic control system
Auxiliary Equipment: PE beveling machine, hydraulic lifting system, exhaust & ventilation system
Our Advantages
Cost Reduction - High sealing performance, energy-saving, and environmentally friendly.
Long Service Life - Easy installation and construction, lifespan up to 30-50 years.
Excellent Impact Resistance - Performs well even under low temperatures; low water absorption.
Superior Anti-Corrosion Performance - Reliable protection with simple and economical process.
Fully Automatic Operation - PLC control with intelligent sensors for position, speed, and energy monitoring ensures precision and efficiency.
Applications
3-layer PE coated steel pipes are widely used for:
Oil and gas transmission pipelines
Urban gas and water supply systems
District heating networks
Underground and industrial anti-corrosion projects
This technology has been widely applied in major domestic and international projects, with products exported to Europe, the Middle East, Central Asia, Africa, and Russia.
Company Profile
Qingdao Huashida Machinery Co., LTD, is a manufacturer of series of plastic pipe machines, municipal pipe machines, pipe insulation&anticorrosion machines, and pipe jointing&anticorrosion materials, with 21 years of production experience.
Our main products are:
1. HDPE jacket pipe for pre-insulated pipe Production Line (110-2000mm)
2. Rigid pre-insulated pipe Production Line
3. Flexible pre-insulated pipe(PERT) production line
4. Steel pipe FBE/2LPE/3LPE anti-corrosion coating line
5. Steel pipe derusting line
6. PE pressure pipe/Water Gas supply pipe production line
6. PP/PE plastic board/sheet/geomembrane production line
7. NBR PVC Thermal insulation tube/plate production line
8.Pipeline anti-corrosion materials and instruments: heat shrink joint coating sleeve, electro-fusion weldable joint sleeve, portable welding gun(extruder), PE PP welding rod.
We have been working with more than 400 overseas customers and exporting our products to Kazakhstan, Uzbekistan, Iran, Turkey, Russia, Nigeria and other countries.
Our team
Delivery
Exhibition
Certifications
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