Thick-walled alloy tubes are often coated to protect against corrosion and damage during storage and transportation. This type of coating is especially important for exported thick-walled alloy pipes, which may be stored in open port yards and exposed to harsh weather conditions, as well as for oilfield pipes that face challenging environments. Common methods for applying anti-corrosion coatings include electrostatic painting and high-pressure spraying equipment. However, these traditional techniques often come with several drawbacks, such as long drying times, inconsistent coating quality, and safety concerns like fire hazards. Additionally, many conventional paints are oil-soluble and highly toxic, raising serious environmental and health issues. In response to these challenges, the industry is increasingly focusing on developing more efficient and eco-friendly solutions. One promising direction is the creation of transparent, water-based, quick-drying paints that are ideal for spraying applications. These materials not only improve the efficiency of the coating process but also reduce harmful emissions. On the equipment side, there is growing interest in automated systems for high-pressure painting and coating recycling, which can enhance productivity while minimizing waste. Furthermore, research is being conducted into improved application processes, such as pre-heating (using intermediate frequency heating) before spraying or post-spray drying techniques, to ensure better adhesion and durability of the coating. These innovations aim to make the entire coating process safer, faster, and more sustainable.
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