1.Coating Anticorrosion
Coating anticorrosion is a widely used method for steel pipe corrosion protection. Common coating materials include epoxy resin, polyethylene, and polyurethane. They effectively prevent corrosive media from penetrating the steel pipe surface, providing long-term protection. Epoxy coatings also have excellent insulation properties, making them suitable for applications requiring high electrical performance.

Polyethylene coating: Polyethylene coating offers excellent water resistance, low-temperature resistance, and impact resistance. It can maintain good protection effect under harsh environmental conditions and is especially suitable for steel pipes such as buried pipelines that are exposed to moist soil for a long time.

Polyurethane coating: Polyurethane coating offers advantages such as high hardness, good wear resistance, and excellent flexibility. It can adapt to the deformation and vibration of steel pipes during use while providing good corrosion protection.

2. Galvanized anti-corrosion
Galvanizing is a process where steel pipes are immersed in molten zinc to form a zinc coating on the surface. The advantage of galvanizing for corrosion protection is that the electrochemical activity of zinc is higher than that of iron. When the zinc coating on the surface of the steel pipe is locally damaged, the zinc will be corroded first as an anode, thereby protecting the steel pipe substrate from corrosion. In addition, the galvanized layer also has good decorative appearance and certain wear resistance.

3. Cathodic Protection
Cathode protection inhibits corrosion by applying an impressed current or sacrificial anodes to the steel pipe, turning it into a cathode.

Impressed Current Cathodic Protection (ICCP)
This method allows precise control of the magnitude and distribution of the protective current as needed, making it suitable for large steel pipe structures and long-distance pipeline systems.

Sacrificial Anode Cathodic Protection
Sacrificial anodes are typically made of active metals such as magnesium and zinc. These metals dissolve preferentially during corrosion, providing protection for the steel pipe. The sacrificial anode cathodic protection system is easy to install and has low maintenance costs.

4. Composite Anticorrosion
Combined anticorrosion methods combine two or more of the aforementioned anticorrosion methods to achieve a better anticorrosion effect.

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