3mm GP Coils are also known as Galvanized Plain coils, are steel coils that are coated with a layer of zinc to protect them from corrosion. This process is called galvanization, and it involves immersing the steel coil in a bath of molten zinc, which creates a tightly bonded protective layer on the surface of the coil. GP coils are commonly used in construction, automotive, and general manufacturing industries, and come in a variety of sizes and thicknesses. 3mm GP Coils are a durable and cost-effective solution for protecting steel from rust and other forms of corrosion, making them a popular choice for many different applications.