Three-Layer Polyethylene/Polypropylene External Coating System for Steel Pipes
Three-Layer Polyethylene/Polypropylene External Coating System for Steel Pipes
The 3PE anti-corrosion coating processing line is engineered to apply a durable three-layer protective coating to steel pipes of various specifications, ensuring long-lasting corrosion resistance and reliable performance in demanding environments.
The system applies the coating in three sequential layers:
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Fusion Bonded Epoxy (FBE) - Provides superior adhesion and exceptional corrosion protection
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Adhesive Layer - Ensures strong bonding between the FBE and outer polyethylene layer
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Polyethylene (PE) Outer Layer - Offers robust mechanical protection and thermal insulation
This integrated coating solution is ideal for applications in oil, gas, water, and infrastructure projects where pipeline longevity and safety are critical.
3PE significantly enhances the pipeline's mechanical integrity, electrical insulation, waterproofing, abrasion resistance, and anti-aging properties.
3PE coating/coated steel pipes are extensively utilized in pipeline systems for transporting oil, gas, water and other fluids. They exhibit remarkable resistance against chemicals, moisture, and challenging environmental conditions etc.
Pipe loading → Screw conveyor feeding → Surface rust removal & cleaning → Intermediate frequency preheating → FBE electrostatic powder spraying → Outer adhesive & polyethylene coating → Water spray cooling → Screw conveyor transfer → Pipe end grinding & finishing → Finished pipe unloading
| No. | Name | Set |
| A. Derusting Equipment | ||
| 1 | Pipe-converying 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 Machinery Co., Ltd. has been engaged in the development and producing of pipeline anti-corrosion equipment and raw materials since 2003. It is a leader manufacturer of heat-shrinkable sleeve and equipment in China. Huashida brand is favored by domestic and foreign customers. Devices of the equipment design have our patents. We passed ISO9001, ISO14001Environment, ISO45001 health certification. Up to now, more than 500 sets of production lines have been exported to Russia, Kazakhstan, Belarus, Egypt, Iran, Indonesia and other countries. Huashida brand heat shrinkable sleeve equipment in the production process of continuous summary and update has launched the fourth generation of products. The whole production line has reasonable design, intelligent operation, high speed and high efficiency, energy saving and electricity saving material labor cost. Continuous improvement in component design ensures uniform thickness, improved shrinkage, tensile strength and elongation at break. Product quality to meet the needs of different pipeline anti-corrosion demand. We have a professional after-sales service team to provide on-site and online video teaching and training. Help customers solve production problems as soon as possible.
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