Our industrial copper tubes and copper pipes can be widely utilized in the design of seawater systems for their excellent resistance to corrosion and biofouling and many other excellent properties. Copper corrodes at negligible rates in unpolluted air, water, and deaerated nonoxidizing acids. Copper alloy artifacts have been found in nearly pristine condition after having been buried in the earth for thousands of years, and copper roofing in rural atmospheres has been found to corrode at rates of less than 0.4 mm in 200 years.
Copper alloys resist many saline solutions, alkaline solutions, and organic chemicals. However, copper is susceptible to more rapid attack in oxidizing acids, oxidizing heavy-metal salts, sulfur, ammonia (NH3), and some sulfur and NH3 compounds.
Copper is widely used in applications like freshwater and seawater supply lines, heat exchangers, condensers, shafting, valve stems, and marine hardware - in which resistance to seawater, hydrated salt deposits, and biofouling from marine organisms is important.