Highly Automated 3LPE Coating Pipe Production Line for Customizable and Steel Pipe Manufacturing
3PE anti-corrosion coating is that the steel pipe is protected by three layers to prolong the life of service from 5-10years to 50-100years.
First layer is Fusion bonded epoxy layer (FBE> 100µm), the second layer is adhesive (AD) 170 ~ 250µm, and the third layer is polyethylene (PE) stripe 2.5 ~ 3.7mm.
3PE steel coating pipe has the features of high mechanical strength, excellent electrical insulation performance, Process accuracy and environmental friendliness.
3PE (3-layer polyethylene) coated pipes are high-performance anti-corrosion steel pipes widely used in demanding environments for long-distance transportation projects. The three-layer structure (fusion-bonded epoxy powder, adhesive layer, and polyethylene outer sleeve) provides superior corrosion resistance, mechanical protection, and durability. Key application areas include:
1. Oil & Gas Transportation
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Long-distance pipelines: Used for high-pressure transportation of crude oil, natural gas, and refined petroleum products, resistant to soil corrosion and chemical erosion.
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Offshore engineering: Suitable for subsea pipelines, withstanding saltwater spray and high humidity to extend service life.
2. Urban Pipeline Networks
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Gas pipelines: Excellent anti-permeability ensures safe gas delivery.
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Water supply systems: Prevents water contamination, ideal for municipal drinking water and sewage pipelines.
3. Chemical & Industrial Applications
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Chemical fluid transportation: Resistant to acids, alkalis, salts, and other corrosive media, widely used in chemical plants and refineries.
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Slurry pipelines: Exceptional abrasion resistance for mining and mineral slurry transport.
4. Harsh Environments
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Extreme cold/hot regions: The PE layer performs stably in temperatures ranging from -40°C to 80°C.
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Saline-alkali/swamp areas: Triple-layer protection effectively resists electrochemical and microbial corrosion.
Upload pipes→pipes conveyor→rust removal→intermediate frequency heating→Epoxy powder coating→Middle layer &polyethylene stripe winding→water cooling→pipes conveyor→ pipe chamfer→unload pipes
Blasting machinery 
steel pipe conveyor
FBE Coating machinery 
PE/PP layer wrap extruder line 
Main Equipment of 3PE anti-corrosion coating processing
| No. | Name | Set |
| A. Derusting Equipment | ||
| 1 | Pipe-conveying Equipment | 1 |
| 2 | Shot Blast Cleaning Machine | 1 |
| 3 | Cyclone Dust Collector | 1 |
| 4 | Pulse dust collector | 1 |
| 5 | Centrifugal exhaust fan | 1 |
| 6 | Rust removal equipment PLC | 1 |
| B. Coating equipment | ||
| 1 | Coating transfer equipment | 1 |
| 2 | IF heating device | 1 |
| 3 | Powder spraying device | 1 |
| 4 | Automatic loading dryer | 2 |
| 5 | SJ-65/30 Extruder | 1 |
| 6 | SJ-180/30 Extruder | 1 |
| 7 | Hot melt adhesive extruder die | 1 |
| 8 | PE sheet extruder head mold | 1 |
| 9 | Hot melt adhesive/PE sheet coating device | 1 |
| 10 | Environmental Protection Ventilation equipment | 1 |
| 11 | Cooling Spray equipment | 1 |
| C.Platform Equipment | ||
| 1 | Steel pipe platform | 1 |
| 2 | Post-rust removal transition platform | 1 |
| 3 | Product tube storage platform | 1 |
| 4 | Hydraulic Equipment | 3 |
| D.Groove Equipment | ||
| 1 | PE Beveling Machine | 2 |
| 2 | Hydraulic Lifting and Turning Machinery | 1 |
| 3 | Hydraulic Equipment | 1 |
| 4 | PLC | 1 |
| E.Compressed air Equipment | ||
| 1 | Screw Air Compressor | 1 |
| 2 | Cold dry machine | 1 |
| 3 | Precision filters | 3 |
| 4 | Gas tanks | 1 |
1. Our History
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