Analysis of the Causes of Rust on Seamless Carbon Steel Pipe Surfaces:The causes of rust on seamless carbon steel pipe (CS SMLS pipe) surfaces can be multifaceted, with common reasons including:1. Improper surface treatment of the seamless steel pipe leads to an uneven oxide film, failing to prevent rust formation.2. The steel pipe is subjected to oxidation and corrosion during transportation, storage, and use, resulting in surface rust.3. Environmental factors also affect th...