What is a primary characteristic that differentiates coated pipes from bare pipes?

Coated pipes are distinguished primarily by their enhanced ability to resist corrosion, which is a crucial characteristic when considering the longevity and durability of piping systems. The protective coating applied to these pipes acts as a barrier against corrosive elements, such as water and chemicals that could lead to rust and degradation over time. This corrosion resistance is especially important in environments where pipes are exposed to moisture or aggressive soil conditions, as it significantly extends the service life of the pipes, reduces maintenance costs, and improves overall system reliability.

The other characteristics mentioned, while they may apply in specific contexts, do not define the primary function of coated versus bare pipes as clearly as corrosion resistance. For instance, flexibility and weight can vary based on the materials used and do not universally apply to all coated pipes. Similarly, ease of installation may depend on various factors unrelated to whether the pipe is coated or bare. Therefore, the key differentiator between coated pipes and bare pipes remains the superior corrosion resistance offered by coatings.