What materials are commonly used in the construction of gas piping?

In gas piping construction, wrought iron, steel, and black pipe are commonly utilized due to their strength, durability, and ability to withstand high pressures that are typical in gas systems. These materials are particularly effective at containing natural gas and propane and are also resistant to corrosion when properly treated.

Wrought iron and steel offer excellent mechanical properties, making them suitable for both underground and above-ground installations. Black pipe, which is typically used for gas applications, is coated with a layer of protective oil to prevent rust during shipping and, once installed, provides a secure and leak-proof infrastructure for transporting gas.

In contrast, some of the other materials mentioned may not be suitable for gas piping because of their properties. Plastic, for example, could be used in certain low-pressure applications but has limitations regarding durability and temperature resistance compared to metal pipes. Meanwhile, aluminum and rubber are not typically employed for transporting gas due to concerns about their strength and potential for leakage. Lastly, concrete and fiberglass are not suitable materials in gas piping construction either, as they lack the necessary strength and are not designed to handle the requirements of gas systems safely.