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Copper
Salt water cause corrosion on most metal pipes.
The drain metal pipes are usually coated and galvanized because of the hard water.
Copper
Water is delivered by using large metal pipes.
some times when temperatures go really cold in winters it causes water to freeze and as the water in pipes starts to freeze, the expansion that takes place when water freezes causes pipes to break
it works because water travels up the pipes then comes out of little holes in the pipes. and a mechanism moves the pipes
Water moves underground through pipes and man made tunnels. If there are no pipes or tunnels, water finds little holes or crevices to move through.
Water pipes should not of themselves crack at any temperature, however if pipes have water in them the water will freeze at temperatures below 0oC. If this happens then as the water freezes it will expand (ice is less dense than water) and as it expands it will either stretch metal pipes until they burst or crack ceramic pipes. For this reason external water pipes are buried at a depth to which the frost will not penetrate and internal water pipes are lagged to keep them warm.
if the pipes are warm or hot at the time the coldwater passes though them, it can cause the pipes to cool and contract
The reason a water pipe squeals is because of the water rubbing against the metal of the pipe.
Metal dector or just stat opening the walls