High-Efficiency 3LPE & Epoxy Coating Line for Superior Pipe Protection
Product Description
This high-efficiency 3LPE & epoxy coating line is engineered to deliver outstanding anti-corrosion performance for steel pipes used in oil & gas, water transmission, district heating, and infrastructure projects. Integrating advanced surface preparation, precise epoxy powder application, and a durable three-layer polyethylene (3LPE) coating process, the system ensures strong adhesion, uniform thickness control, and long-term pipeline durability.
Designed for high productivity and stable operation, the line features automated control systems, energy-efficient heating technology, and optimized material handling to maximize output while reducing operational costs. With customizable configurations to accommodate various pipe diameters and project specifications, this coating line provides a reliable, long-lasting protection solution for demanding industrial environments.
Product Parameters
Production line parameters:
(1) Steel pipe coverage range: 159mm-4200mm
(2) Processing capacity: ≤250m2/h
(3) Cleaning level: Sa2.5
(4) Materials used: epoxy powder, adhesive, polyethylene, epoxy coating (single component, two-component)
(5) 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
Main Equipment List and specification
| 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 stee |
| 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 Siemens 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.
Application
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:
Detailed Photos
Production Line Components
The 3LPE coating line is a fully integrated system comprising the following key modules:
1. Steel Pipe Conveyor System
-
Automated Adjustment: Conveyor rollers automatically adjust based on pipe size; unified opening, closing, and angle control.
-
Intelligent Control: Siemens 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
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)
7. Water Cooling System
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
-
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.
-
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).
Our factory
with a construction area of more than 35,000 square meters.
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!
We have own workshops for machining, welding, spraying and assembly.
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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