Causes of Rust on Carbon Steel Pipes:The surface metal of carbon steel pipes (CS pipe) chemically reacts with oxygen and moisture in the air, causing rust. Rust is also susceptible to factors such as humidity and chemical corrosion.Key Maintenance Principles:Keep it dry: Moisture is essential for rust.Clean the surface: Dust, salt, and chemicals accelerate corrosion.Complete Coating: A complete protective coating (such as paint or galvanizing) is the most effective barrier ag...