Which material is commonly used for gas piping?

Steel is commonly used for gas piping due to its strength, durability, and ability to withstand high pressures. It is particularly suited for both above-ground and underground gas distribution systems. Steel pipes provide excellent resistance to impact and corrosion when properly coated, allowing them to maintain structural integrity under various environmental conditions.

While some other materials may also be used in specific scenarios, such as polyethylene for underground applications where flexibility is beneficial, or copper in certain residential settings, steel remains the standard material for gas piping in most commercial and industrial applications. This use stems from its proven performance in safely transporting natural gas and other gaseous fuels.

Polyvinyl chloride (PVC) is not suitable for gas piping, as it is not rated for use with gases and can become brittle over time. Thus, steel is the preferred choice in many installations for its safety, reliability, and compliance with industry standards.