3LPE Anti-Corrosion Coating Production Line with Medium-Frequency Induction Heating
Huashida 3LPE Steel Pipe Blasting & Coating Equipment is a comprehensive solution designed to extend the service life of water, gas, and oil pipelines from 5-10 years to 50-100 years. Capable of processing pipe diameters from 32mm to 3000mm, this production line integrates internal and external shot blasting, dual-layer Fusion Bonded Epoxy (FBE) powder/liquid coating, and PE/PP film wrapping.
Whether you need single-layer FBE, double-layer FBE, double-layer PE/PP, or the industry-standard 3-layer PE (3LPE) coating, our machinery delivers high mechanical strength, excellent electrical insulation, and stable process parameters.
Production Line Specifications
Production line parameters:
- Steel pipe coverage range: 159mm-4200mm
- Processing capacity: ≤250m²/h
- Cleaning level: Sa2.5
- Materials used: epoxy powder, adhesive, polyethylene, epoxy coating (single component, two-component)
- Main equipment: steel pipe external rust removal equipment, steel pipe internal rust removal equipment, medium frequency heating equipment, epoxy powder spraying equipment, AD adhesive extrusion equipment, PE polyethylene extrusion equipment, cooling equipment, PE groove equipment, high-pressure airless spraying machine, curing furnace heating and drying equipment, spray marking equipment, catalytic combustion environmental protection equipment, etc.
Main Equipment List
| No. |
Name |
Specification |
| A. Surface Cleaning Equipment |
| 1 |
Steel pipe conveyor |
Adjustable speed and angle, pipe uploading and unloading controlled by PLC |
| 2 |
Shot blasting machine |
|
| 3 |
Cyclone dust collector |
High efficient downwind cyclone dust removal |
| 4 |
Impulse cartridge dust collector |
|
| 5 |
Centrifugal fan |
|
| 6 |
PLC control system |
Automatic control of the line |
| B. Coating Equipment |
| 1 |
Spiral pipe conveyor |
Adjustable speed and angle |
| 2 |
Induction heating machine |
|
| 3 |
Powder spraying device |
Spraying thickness 80-800μm |
| 4 |
Automatic feeder & dryer |
|
| 5 |
SJ-65/30 Extruder |
|
| 6 |
SJ-180/30 Extruder |
|
| 7 |
Adhesive extruder die mould |
High quality die steel |
| 8 |
PE sheet extruder die mold |
High quality die steel |
| 9 |
Adhesive/PE sheet coating device |
Pressing roller with silicon coating and internal cooling |
| 10 |
Environmental Protection Ventilation equipment |
|
| 11 |
Cooling Spray equipment |
|
| C. Platform Equipment |
| 1 |
Steel pipe platform |
High quality |
| D. Groove Equipment |
| 1 |
PE Beveling Machine |
Steel brush disk |
| 2 |
Hydraulic Lifting and Turning Machinery |
For lifting and turning the pipe |
| 3 |
Hydraulic Equipment |
|
Our Advantages
Extended Lifespan
Increases pipeline longevity dramatically with robust anti-corrosion layers.
High Automation
Features PLC central control and an interactive HMI screen for precise management.
Versatility
Handles pipes from 32mm to 3000mm in diameter, customizable to user requirements.
Eco-Friendly Operation
Integrated dust removal and powder recovery systems minimize environmental impact.
Proven Global Track Record
Nearly 50 lines sold worldwide, including in Russia, Iran, UAE, India, and Kazakhstan.
Applications
The three-layer PE (3LPE) process utilizes an epoxy powder bottom layer for adhesion, followed by a copolymer adhesive and a polyethylene top layer. This system is widely used for:
- Oil and natural gas transmission pipelines
- Chemical material transport
- Water supply pipelines
- Slurry pipelines
Production Line Components
1. Steel Pipe Conveyor System
- Automated Adjustment: Conveyor rollers automatically adjust based on pipe size; unified opening, closing, and angle control.
- Intelligent Control: PLC with a central computer and interactive HMI.
- Robust Design: Each wheel set has independent power, allowing a spiral angle of up to 30° and variable transmission speed (0-6 m/min). Solid wide-surface tires (load capacity: 2.5 tons per wheel) with a glue layer thickness >85mm ensure stable, long-term operation.
2. Steel Pipe Blasting Equipment (Internal & External)
Surface Preparation: Removes rust, scale, and contaminants to achieve a Sa2.5 descaling grade, ensuring optimal coating adhesion.
3. Dust Removal System
Cleaning: Utilizes a fan and pulse back-blowing dust collector to clean dust and abrasives from the pipe surface post-blasting, preventing contamination during coating.
4. Steel Pipe Heating Equipment
- Preheating: Burner heating (gas/diesel) raises pipe temperature to 40-60°C before blasting to remove moisture and grease.
- Coating Heating: Intermediate frequency (IF) heating raises the pipe to 180°C - 230°C to meet FBE and adhesive coating standards.
5. Fusion Bonded Epoxy (FBE) Powder Coating & Recovery System
- Application: Stainless steel coating room equipped with electrostatic powder guns and a fluidization powder box.
- Recovery: Dual cyclone collecting structure paired with a pulse-blowback cylinder dust catcher for efficient powder recycling.
6. Extrusion & Wrapping System (Adhesive & PE Layer)
Layering: Extrudes the adhesive and outer PE/PP layer onto the pipe. Available in cladding or wrapping types (side or upper configuration) to suit different production layouts.
7. Water Cooling System
Rapid Cooling: Cools the coated pipe from high temperatures down to 40-60°C using a water cooling room, tower, and pump system to protect the newly formed anti-corrosion layer.
8. Cutback Machine (End Beveling)
End Finishing: A double-head high-efficiency machine that removes the coating from pipe ends, forming a groove (<30°) for easy field welding. Includes steel brushes, polishing motors, and a high-efficiency dust collector.
3 layer PE anti-corrosion coating consist of first FBE coating, middle adhesive layer, and outer polyethylene layer.
Technical Parameters & Q&A
Q1: What pipe diameters can your equipment handle?
A: We offer four main models covering:
- 48-219mm
- 219-1220mm
- 800-1600mm
- 1000-2400mm
Q2: What is the achievable descaling grade?
A: Sa 2.5 (Near-White Metal).
Q3: What coating standards do you meet?
A: Our equipment meets international standards including SY/T0413-2002, GB/T23257-2009, German DIN 30670, DIN 30678, as well as specifications from the American Corrosion Association and DNV.
Q4: What is your production output?
A: Output varies by diameter. The maximum capacity is 3 to 8 km/day, with an annual processing capacity of up to 2 million square meters (based on Φ508 mm pipe).
Q5: What is the typical coating thickness?
A: 80 - 800 µm (microns).
Q6: What is your delivery time?
A: 2-3 months after receiving the deposit.
Q7: Where have you installed these lines?
A: We have successfully delivered nearly 50 sets worldwide, including in Russia, Iran, UAE, India, Belarus, and Kazakhstan.
Q8: What after-sales service do you provide?
A:
- Warranty: 12 months for mechanical parts, 6 months for electrical parts (from the date of pick-up).
- Technical Support: We provide comprehensive technical services, including training and guidance for buyer's operators.
Our Factory
With a construction area of more than 35,000 square meters, we have our own workshops for machining, welding, spraying and assembly.
Company Profile
Why Choose Huashida? With nearly 50 successful installations globally, Huashida is a trusted name in pipeline anti-corrosion solutions. We don't just sell machines; we provide turnkey solutions tailored to your project needs.
Contact us today to discuss your specific requirements!
Customer Visiting
We have received customers from Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, Iran, India, Brazil, Egypt and other countries to visit the factory for inspection and ordering.
Packaging & Shipping
We have delivered our equipment to Russia, Kazakhstan, Uzbekistan, Belarus, Iran and other countries.
HUASHIDA at International Exhibitions
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