What type of pipe is typically required for natural gas lines?

The correct choice represents black iron pipe as the standard material used for natural gas lines. Black iron pipe is favored in this application due to its strength, durability, and ability to withstand the pressures associated with gas service. Additionally, it is suitable for high-temperature environments, making it a reliable option for long-lasting gas installations.

Natural gas piping systems must meet strict safety regulations, and black iron pipe is recognized for its effectiveness in ensuring safe and secure gas delivery. Unlike plastic or PVC, which are not approved for gas service due to potential failure or combustion risks under certain conditions, black iron is specifically designed to handle the properties of natural gas.

So, when constructing or servicing natural gas lines, black iron pipe is essential for maintaining safety and compliance with industry standards.