Our industrial copper tubes and copper pipes can be widely utilised in the design of seawater systems for their excellent resistance to corrosion and bio-fouling and many other excellent properties. Copper corrodes at negligible rates in unpolluted air, water, and deaerated non oxidising acids. Copper alloy artefacts 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.