The epoxy powder anti-corrosion process for the inner and outer walls of steel pipes is currently an efficient and reliable solution for pipeline anti-corrosion. The treated steel pipe has significant advantages: its coating not only has excellent corrosion resistance, capable of resisting the long-term erosion of various chemical media such as acids, alkalis, and salts, but also has a smooth and dense surface structure, which can effectively reduce the frictional resistance during fluid transportation and improve the transmission efficiency of the pipeline. This type of anti-corrosion steel pipe, with its outstanding comprehensive performance, is widely used in multiple key fields such as long-distance oil and gas pipelines, urban water supply and drainage networks, and industrial fluid transportation.
Epoxy powder is a thermosetting, non-toxic coating. After curing, it forms a high-molecular cross-linked structure coating, which has excellent chemical anti-corrosion performance and mechanical strength. Its base layer is bonded and cured on the surface of the steel pipe to form a continuous coating, providing excellent adhesion, chemical corrosion resistance, and cathodic disbondment resistance. Polymer adhesives bond epoxy powder before gelation and connect the top layer of polyethylene, making the three-layer structure closely combined into one.
| Item | Process Flow |
|---|---|
| 1 | Upload pipes |
| 2 | Pipes spiral conveyor |
| 3 | External blasting |
| 4 | Internal blasting |
| 5 | Rust removal |
| 6 | Intermediate frequency heating |
| 7 | FBE powder coating |
| 8 | Powder recycling system |
| 9 | Load down pipe rack |