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Compared to other anti-corrosion methods, arc spraying technology offers significant advantages such as a long service life against corrosion, strong adhesion, high construction efficiency, and good cost-effectiveness; it is particularly suitable for long-term anti-corrosion protection of large steel structures. Compared to traditional anti-corrosion methods, its key advantages lie in the following aspects: extremely long service life for anti-corrosion – arc spraying of zinc, aluminum, or their alloys, combined with organic sealing coatings, creates a composite system that provides long-term protection; the anti-corrosion lifespan can exceed 50 years, with no maintenance required for 30 years, and only occasional application of sealing coatings is needed to maintain protective effects. Excellent coating adhesion: The arc spray coating bonds to the metal substrate through mechanical interlocking and micrometallurgical bonding, achieving an adhesion strength of over 10 MPa – significantly higher than that of coating systems such as zinc-rich coatings – allowing it to remain intact without peeling or flaking even under impact or bending. Cathodic protection mechanism: The coating acts as the anode, while the steel substrate functions as the cathode. Even if the coating is partially damaged, protection of the substrate can continue through the \"sacrificial anode\" method, enabling self-healing anti-corrosion protection – something that ordinary coatings cannot achieve. High construction efficiency: The efficiency of arc spraying is 2-4 times that of traditional flame spraying, and it can be carried out on-site. It is particularly suitable for the rapid anti-corrosion treatment of large structural elements such as bridges and docks, allowing compliance with project deadlines. Better environmental protection and safety: Compared to electroplating, arc spraying does not generate toxic wastewater, poses no risk of hydrogen embrittlement, and is more friendly to operators and the environment ； Compared to surfacing, its heat input is extremely low, so it does not cause deformation of the workpiece or changes in the material properties. Wide material compatibility: It can be used to coat various metals and alloy wires such as zinc, aluminum, stainless steel, and copper; it is even possible to apply high-performance composite coatings like Zn-Al-Mg-RE, thereby meeting the requirements of different corrosion environments. Outstanding cost efficiency: In countries with high labor costs such as the United States, the cost of arc spraying is even lower than that of heavy-duty anti-corrosion paints, and it also reduces subsequent maintenance costs significantly, resulting in notable long-term economic benefits.