It is steel tubing that has been coated with zinc to protect it from corrosion. This coating process, known as galvanization, involves immersing the steel in a bath of molten zinc or applying zinc through an electroplating process. The zinc layer serves as a barrier, preventing corrosive substances from reaching the underlying steel. A common application is in plumbing systems for potable water, although alternative materials are often preferred in modern construction due to potential long-term issues with the zinc coating.
The utilization of this material offered significant advantages, particularly in environments prone to rust and decay. Its widespread adoption historically stemmed from its cost-effectiveness and extended lifespan compared to uncoated steel. This characteristic made it a practical choice for infrastructure projects and residential applications. While offering protection, it’s important to consider that the zinc coating can degrade over time, potentially leading to internal corrosion and the release of zinc into the water supply, albeit typically at levels considered safe.
