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It is not generally realised how great an effect small obstructions can have on the flow pattern of water in a pipe-work system and the extent to which they can induce turbulence and cause corrosion-erosion. For example, it is most important, as far as possible, to ensure that copper tubes cut with a tube cutter are deburred before making the ...
In March 2003, Marc Edwards, a professor of civil engineering and expert on corrosion in drinking-water systems, was conducting research into an unexpected increase in pinhole leaks in copper water pipes in the DC area.
Edwards's research in the mid-1990s focused on an increasing incidence of pinhole leaks in copper water pipes. Homeowners contacted him about the leaks, some of which were occurring 18 months after installation. [2] After a century of using copper for water pipes, the expectation is that they will last for 50 years in residential applications. [2]
About 20 pinhole leaks have been fixed to date on that section, and work continues to locate and repair others. Why pinhole leaks cause pesky problems for the Quemahoning's 66-inch diameter steel ...
Pinhole leaks with pitting initiating on the exterior surface of the pipe can occur if copper piping is improperly grounded or bonded. The phenomenon is known technically as stray current corrosion or electrolytic pitting. Pin-holing due to poor grounding or poor bonding occurs typically in homes where the original plumbing has been modified ...
Copper tubes have been used to distribute potable water within building for many years and hundreds of miles are installed throughout Europe every year. The long life of copper when exposed to natural waters is a result of its thermodynamic stability, its high resistance to reacting with the environment, and the formation of insoluble corrosion products that insulate the metal from the ...
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