Gas transmission lines typically have what diameter range?

Gas transmission lines typically have what diameter range?

• A. 12-36 inches
• B. 2-6 inches
• C. 6-12 inches
• D. 36-48 inches

Answer: (A)

Gas transmission lines are the main arteries that move large volumes of gas over long distances, so they’re built with larger diameters than local distribution lines. In practice, transmission mains commonly fall in the 12 to 36 inch range. This size provides a good balance of flow capacity and cost for regional and long-haul networks at the operating pressures used. Smaller diameters (like 2–6 inches or 6–12 inches) are typical for distribution or service lines, not transmission mains. Very large pipes can exist in some corridors, but the 12–36 inch range is the standard reference for transmission mains in many utilities and training contexts.

Gas transmission lines are the main arteries that move large volumes of gas over long distances, so they’re built with larger diameters than local distribution lines. In practice, transmission mains commonly fall in the 12 to 36 inch range. This size provides a good balance of flow capacity and cost for regional and long-haul networks at the operating pressures used. Smaller diameters (like 2–6 inches or 6–12 inches) are typical for distribution or service lines, not transmission mains. Very large pipes can exist in some corridors, but the 12–36 inch range is the standard reference for transmission mains in many utilities and training contexts.