Fully Automatic PLC-Controlled 3PE Coating Line for Steel Pipes with 20mm - 1420mm Diameter Range and Sa2.5 Cleaning Level
Fully Automatic PLC-Controlled Steel Pipe 3PE Anti-Corrosion Coating Line
The Steel Pipe 3PE Anti-Corrosion Coating Line with Epoxy Powder is designed for high-performance corrosion protection of steel pipelines used in oil, gas, water, and infrastructure projects. This production line applies a three-layer coating system consisting of epoxy powder, hot melt adhesive, and polyethylene outer layer, ensuring excellent adhesion, mechanical strength, and long-term corrosion resistance.
The epoxy powder layer provides strong bonding and chemical resistance, while the hot melt adhesive enhances interlayer adhesion. The polyethylene outer coating offers outstanding impact resistance, moisture protection, and durability. With a stable and efficient production process, the line delivers uniform coating thickness and reliable quality.
This 3PE coating line supports a wide range of pipe diameters and can be customized to meet specific project requirements. Featuring automated control, energy-efficient design, and easy operation, it helps manufacturers improve productivity, reduce operating costs, and achieve consistent coating performance.
3-layer PE anti-corrosion coating consists of the first FBE coating, middle adhesive layer, and outer polyethylene layer.
The three-layer polyethylene anti-corrosion coating is advanced technology as the outer protective layer of buried pipe, widely used in the anti-corrosion of gas and oil transmission pipelines, urban gas supply, water supply pipes, and other fluid transmission pipelines. 3-layer PE anti corrosion coating can strengthen the pipeline's mechanical properties with high electrical resistance, waterproof, wearable, and anti-aging performance.
The anti-corrosion coating processing line includes:
-steel pipe transmission system
-surface treatment system
-pipe dust removal system
-pipe heating system
-electrostatic spraying system
-coating system
-water cooling system
-end cutting system
-hydraulic and pneumatic system
-testing system
-electronic control system.
Technological processes
Upload pipes→pipes screw conveyor→rust removal of intermediate frequency heating→Epoxy powder coating→outer layer soli quid & polyethylene coating→cooling spray→pipes screw conveyor→grinding pipes, send→unload pipes
Main Equipment List
| 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 |
Qingdao Huashida, a global plastic extrusion equipment R&D manufacturer and solution provider, 70% of our customers from Europe, the United States, the Middle East and Southeast Asia and other overseas countries. Huashida's R&D and manufacturing insulation pipe production line is widely used in municipal heat, sewage, water supply, natural gas and communication pipe network construction, crude oil pipeline transportation and agricultural irrigation. Relying on our innovation and product strength, we have provided customized technical services for more than 1000 manufacturers , including more than 400 domestic enterprises and more than 500 foreign enterprises and established a 24-hour global service response mechanism to effectively solve customer concerns.
Our team
Workshop
We offer customised services to our clients. Customers provide factory drawings we plan the layout of the production line according to the actual site in the customer's country.
We have our own standardised customised packaging for our products. It can also be customised according to the customer's needs.
Every year we participate in specialised exhibitions around the world to promote our brand, and you can find Huashida at exhibitions around the world.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.