Which of the following materials is NOT typically used for gas piping?

Gas piping materials are chosen based on their ability to safely transport gas while withstanding the conditions of the environment in which they are installed. Typically used materials include copper, plastic, and steel, each with specific applications and benefits.

Copper is well-known for its durability and resistance to corrosion, making it a common choice for natural gas applications, especially in residential settings. Plastic, particularly polyvinyl chloride (PVC) and polyethylene, is often used for underground gas distribution due to its lightweight nature and resistance to corrosion and chemical reactions.

Steel is another widely accepted material for gas piping, particularly in commercial and industrial environments. It provides strength and durability, and it is often used in high-pressure applications.

In contrast, wood is not suitable for gas piping due to its combustible nature and lack of durability in handling gas pressures and potential leakage. Using wood could pose serious fire hazards and would not meet the safety standards required for gas transport, which is why it is not considered an appropriate material for gas piping in any typical installation.