Copper pipes used to carry hot and cold water through a building — the traditional gold standard in water supply plumbing.
Metallic piping made from copper alloy, widely used for domestic water supply systems due to its durability, resistance to corrosion, and long service life. Common types include Type L (medium wall, standard residential/commercial), Type M (thin wall), and Type K (thick wall, underground). Copper pipe is joined by soldering (sweating), press fittings, or flare fittings.
The hospital specified Type K copper piping for all underground domestic water lines due to its superior wall thickness.
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