PP boards exhibit excellent performance in the field of corrosion protection, making them a key option for replacing traditional corrosion-prone materials in industries such as chemical engineering, environmental protection, and water treatment. They possess outstanding chemical stability and have good tolerance to most acid, alkali, salt solutions, and low-concentration organic solvents, being less likely to be eroded under normal temperature conditions. As non-metallic polymers, they do not undergo electrochemical corrosion and can maintain structural integrity even in humid and salt-foggy environments.​

Meanwhile, PP boards have an extremely low water absorption rate (usually less than 0.01%), almost not absorbing water, which can effectively prevent indirect corrosion problems caused by the penetration of corrosive media. Their surfaces are flat and smooth, which can reduce the adhesion of corrosive media, lower the risk of local corrosion, such as pitting corrosion and crevice corrosion, and facilitate cleaning and maintenance.​

Within the temperature range of -20℃ to 80℃, the corrosion resistance performance of PP boards remains stable, which is sufficient to meet the needs of most normal or medium - low temperature corrosion protection scenarios. Modified PP boards with added antioxidants and ultraviolet stabilizers have better anti-aging performance. In outdoor environments or those in long-term contact with corrosive media, their service life can reach more than 5-10 years, and the attenuation of their corrosion resistance performance during this period is gentle. In practical applications, PP boards are widely used in the production of chemical containers, environmental protection equipment components (such as desulfurization towers and waste gas treatment pipelines), water treatment facilities (such as sedimentation tank and filter tank linings), and electroplating tanks, all showing reliable corrosion protection effects.​

According to the materials and features, the PP boards could be subdivided into:

• Pure PP board: Low density, easy to weld and process with excellent chemical resistance, heat resistance, and impact resistance. Non-toxic and odorless, it meets environmental protection requirements.
• PP extruded board: Made from PP resin with various functional additives through processes such as extrusion, calendering, cooling, and cutting.
• Glass fiber reinforced PP board: Reinforced with 20% glass fiber, it doubles the strength and rigidity. Highly resistant to heat, low-temperature impact, corrosion and arc.
• Modified PP board: Good dimensional stability and reasonable price. Improved rigidity and heat resistance compared with pure PP.