Automatic 3LPE Coating Pipe Production Line with PLC Control System for 50-4200mm Anti-Corrosion Steel Pipes
Product Overview
The 3LPE coating line is designed for anti-corrosion treatment of various steel pipes, including single layer FBE, double layer FBE, double layer PE, double layer PP and 3PE coatings. The outer protective layer of coated pipe provides high mechanical strength and excellent electrical insulation performance.
Key advantages: High degree of mechanization, stable process parameters, environmentally friendly operation. This technology extends pipeline service life from 5-10 years to 50-100 years.
Applications
The three-layer PE process, featuring epoxy powder coating as the bottom layer with polyethylene PE and adhesive binding, is widely used for steel pipe anti-corrosion. Applications include oil, natural gas, chemical material, and water pipelines.
Main Equipment List
| No. |
Name |
Set |
| A. Derusting Equipment |
| 1 |
Pipe wheel conveyor |
1 |
| 2 |
Shot Blasting 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 |
Pipe wheel conveyor |
1 |
| 2 |
Induction heating device |
1 |
| 3 |
Powder spraying device |
1 |
| 4 |
Automatic loading dryer |
2 |
| 5 |
SJ-65/30 Extruder |
1 |
| 6 |
SJ-120/30 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 uploading platform |
1 |
| 2 |
Downloading platform |
1 |
| 3 |
Pipe storage platform |
1 |
| 4 |
Turnover mechanism |
3 |
| D. Groove Equipment |
| 1 |
PE Beveling Machine |
2 |
| 2 |
Hydraulic Lifting and Turning Machinery |
1 |
| 3 |
Hydraulic Equipment |
1 |
| 4 |
PLC automatic control system |
1 |
Technical Specifications
- Pipe diameter: 50-4200mm
- Processing capacity: ≥250m²/h
- Cleaning level: ≥Sa2.5
- Materials used: Epoxy powder, adhesive, polyethylene
Key System Components
Steel Pipe Conveyor System
- Automatic conveyor adjustment controlled by pipe size
- PLC central control computer with interactive human-computer interface
- Customizable according to user special requirements
- Unified adjustment of opening, closing, and angle
- Independent power drive for each wheel set with spiral angle expansion up to 30 degrees
- Adjustable transmission speed: 0-6 meters
- Solid wide-surface tires with single wheel load capacity of 2.5 tons
Steel Pipe Heating Equipment
Heats pipes from 40ºC to 60ºC before blasting to remove water, moisture and greasy dirt. Available in intermediate burner heating and frequency heating forms. Intermediate frequency heating heats pipes to 180ºC-230ºC to meet coating standards.
Steel Pipe Blow Equipment
Internal blowing system cleans dust and sand inside pipes using draught fan to prevent contamination during coating. Includes pipe internal blowing carrier, dust collecting box, and pulse back-blowing dust collector.
Fusion Bonded Epoxy Powder Coating Equipment
Includes stainless coating room, epoxy powder guns, powder coating controller, fluidization powder box, and dual cyclone collecting structure.
Extrusion System
Extrudes PE adhesive and PE protective coating onto pipe external walls. Available in cladding type and twining type configurations.
Water Spraying Equipment
Rapidly cools heated pipes to 40ºC-60ºC to protect anti-corrosion and protection layers.
Cutback Machine
Removes pipe-end coating layer to form grooves below 30° for easy jointing. Double-head high-efficient design with integrated dust collection.
Bends & Fittings Coating Line
Advanced solution for applying 3LPE/FBE external coating on steel pipe bends used in pipeline systems. Provides high resistance to chemicals, moisture, and harmful environments. Includes pipe bend conveyor, shot blasting machine, heating system, coating system, and cooling system.
Frequently Asked Questions
Q1. What is Size of Pipe Dia. your equipment can produce?
A: We produce four main models: Diameter of steel Pipe: 48-219mm, 219-1220mm, 800-1600mm, 1000-2400mm
Q2. What is Descaling grade?
A: SA2.5
Q3. What is your anticorrosion coating standard?
A: Meets SY/T0413-2002, GB/T23257-2009, German DIN 30670, DIN 30678, American Corrosion Association, and DNV standards.
Q4. What is Delivery Time?
A: 2-3 months after deposit
Q5. Production output?
A: Maximum 3 to 8 km/day, annual processing capacity of 2 million square meters (Φ508 mm)
Q6. Coating thickness?
A: 80~800um
Q7. Which countries have you sold your 3PE equipment to?
A: Russia, Iran, UAE, India, Belarus, Kazakhstan and others - nearly 50 sets worldwide
Q8. After-sales service?
A: Warranty period: 12 months for mechanical parts, 6 months for electrical parts. Technical services, training and guidance provided.
Company Overview
Qingdao Huashida Machinery Co., Ltd is a leading manufacturer of plastic extrusion machines in China, specializing in steel pipe anti-corrosion and insulation technology. With over 10 patents and industry certifications, we serve global markets including Russia, Iran, UAE, India, Belarus, and Kazakhstan.
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