First, cold-rolled steel sheets excel in corrosion resistance. Cold-rolled steel plates are processed through the cold rolling process, and there is no residual iron oxide on the surface, thereby reducing oxidation. In addition, cold-rolled steel plates can be coated to increase their corrosion resistance, such as hot-dip galvanizing, electro-galvanizing and other coating processes. These coatings can effectively prevent corrosion of steel and extend its service life.

Galvanized sheet refers to a thin sheet coated with a layer of zinc on the surface of the steel sheet, mainly used for anti-corrosion and decoration; stainless steel sheet is a steel sheet with corrosion resistance, which is composed of iron, chromium, nickel and other elements.

Ductile iron pipe is a better value than plastic pipe because it lasts longer and saves money over time.