What materials can gas piping or tubing be made of?

Gas piping or tubing must be constructed from materials that can safely handle gas pressure and prevent leaks. Steel and copper are commonly used materials due to their durability and resistance to corrosion. Steel, especially, is favored in high-pressure applications and for its strength. Copper is often used in residential applications due to its ease of installation and reliability.

Plastic, particularly specific types like polyethylene, is also recognized for use in gas distribution systems. It's lightweight, resistant to corrosion, and allows for flexible installations. The combination of steel, copper, and plastic thus provides a variety of options suitable for various applications, ensuring safety and compliance with building codes.

In contrast, while aluminum has favorable properties, it does not have the same widespread acceptance and regulatory approval for gas piping as steel and copper and is less commonly used. PVC, which is known for electrical and drainage applications, is not suitable for gas due to its flammability and potential to degrade when in contact with gas. Rubber is flexible but does not provide the necessary resistance to gas, making it unsuitable for gas piping. These considerations highlight why the selection of steel, copper, and plastic is the best choice for gas piping materials.