Copper's excellent corrosion resistance is an important reason for its being chosen in so many applications. Solar energy systems, for example, benefit from copper's resistance to both atmospheric and aqueous corrosion. For water distribution and fire sprinkler systems, copper tube's internal corrosion resistance results in superior flow capacity. When calculating flow capacities, other plumbing materials require additional allowances for corrosion, scaling, out-of-roundness and small internal diameter when compared size-to-size with copper.
Copper tube bores remain smooth, and internal diameters stay constant. Largely because of this, a copper fire sprinkler system can use smaller diameters to provide the same sprinkler coverage as a steel system — with significant savings in installed costs.
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