Automatic 3LPE Coating Pipe Production Line with SA2.5 Cleaning Level for Steel Pipe Dia. 50-4200mm Anti-Corrosion
Product Overview
The 3PE (Three-Layer Polyethylene) coating represents a leading advancement in corrosion-resistant technology. Its engineered structure integrates a fusion-bonded epoxy (FBE) inner layer for superior adhesion, a tough adhesive (AD) intermediate layer for strong molecular bonding, and a high-durability polyethylene (PE) outer layer that delivers long-term external protection.
This carefully designed multi-layer system provides outstanding mechanical robustness, excellent electrical insulation properties, and stable, reliable processing performance. Its environmentally conscious composition makes it an ideal solution for protecting oil and gas transmission lines, municipal water pipelines, and modern district heating networks.
Technological Process
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 Excellence: Robust shot blasting machine with efficient cyclone dust collector and high-performance pulse dust remover.
Advanced Heating System: State-of-the-art induction heating equipment for consistent thermal energy.
Comprehensive Coating System: FBE powder coating unit, adhesive extruder, and PE extruder for seamless application.
Effective Cooling System: Water spraying and cooling device for ideal temperatures.
Efficient Conveying System: Sophisticated pipe loading/unloading platform and turning rollers.
Intelligent Control System: Cutting-edge PLC automatic control system for precise management.
Auxiliary Equipment: PE beveling machine, hydraulic lifting system, and comprehensive exhaust & ventilation system.
Key Advantages
Cost Reduction: High sealing performance ensures substantial energy savings while being environmentally friendly.
Long Service Life: Hassle-free installation with impressive lifespan of 30-50 years.
Excellent Impact Resistance: Exceptional performance at low temperatures with remarkable low water absorption rate.
Superior Anti-Corrosion Performance: Straightforward and cost-effective process ensuring investment longevity.
Fully Automatic Operation: Advanced PLC control system with intelligent sensors for precise monitoring.
Product Parameters
| No. | Equipment Name | Notes |
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| 1. | External Pipe Shot Blasting Line |
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| 2. | Internal Pipe Shot Blasting Line |
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| 3. | Medium-Frequency Induction Heating System |
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| 4. | Epoxy Powder Spraying Unit |
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| 5. | AD Adhesive Extrusion Unit |
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| 6. | PE Polyethylene Extrusion Unit |
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| 7. | Cooling Unit |
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| 8. | PE Beveling Unit |
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| 9. | High-Pressure Airless Sprayer |
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| 10. | Curing Oven Heating & Drying Unit |
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| 11. | Marking Spraying Unit |
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| 12. | Catalytic Combustion Environmental Protection Unit |
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| 13. | Others by orders |
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Applications
The remarkable 3-layer PE coated steel pipes are ingeniously designed for diverse applications including:
- Oil and gas transmission pipelines - engineered for unparalleled long-term protection against corrosion and external damage
- Urban gas and water supply systems - guaranteeing safe, clean, and reliable transport of essential fluids
- District heating networks - maintaining insulation and resistance to corrosion under challenging high-temperature conditions
- Underground and industrial anti-corrosion projects - providing robust, long-lasting protection for buried and exposed steel pipelines
This state-of-the-art coating technology has been successfully applied in monumental infrastructure projects worldwide, with exports spanning Europe, the Middle East, Central Asia, Africa, Russia, and numerous other regions.
Company Profile
Qingdao Huashida Machinery Co., LTD is a leading powerhouse in manufacturing diverse plastic pipe machinery solutions, municipal pipe machinery, cutting-edge pipe insulation & advanced anti-corrosion technologies, and robust machinery. We specialize in pipe jointing & innovative anti-corrosion materials, backed by over 20 years of unparalleled production excellence.
Our Product Range
- High-Density Polyethylene (HDPE) jacket pipe lines for pre-insulated pipes (110mm to 2000mm)
- State-of-the-art Rigid pre-insulated pipe production lines
- Versatile Flexible pre-insulated pipe (PERT) production lines
- Steel pipe anti-corrosion coating lines (FBE, 2LPE, and 3LPE technologies)
- Advanced Steel pipe derusting lines for optimal surface preparation
- Comprehensive PE pressure pipe/Water and Gas supply pipe production lines
- PP/PE plastic board, sheet, and geomembrane production lines
- Specialized NBR PVC Thermal insulation tube and plate production lines
- Comprehensive pipeline anti-corrosion materials and instruments
We proudly serve over 400 international clients, exporting our top-tier products to countries including Kazakhstan, Uzbekistan, Iran, Turkey, Russia, Nigeria, and many more.
