When making piping bends in a metallic gas pipe system, the pipe shall not be bent through an arc of more than how many degrees?

In metallic gas pipe systems, bending the piping is often necessary to navigate around obstacles or to connect various components. However, there is a limit to how far these pipes can be bent to maintain structural integrity and functionality. Bending pipes beyond a certain degree can cause stress, reduce flow efficiency, and even lead to cracks or failures.

The accepted standard for bending metallic gas pipe is to not exceed a 90-degree arc. This limit ensures that the pipes maintain their strength and do not suffer from deformation that could compromise their ability to safely transport gas. Bending pipes more than this degree can introduce complications such as increased friction loss, potential gas leaks, and difficulty in fitting fixtures or connections.

The other options represent angles that exceed this standard. While certain applications may use bends greater than 90 degrees in specific materials or under different regulations, for metallic gas piping specifically, the limit is set at 90 degrees to ensure compliance with safety practices and engineering standards. Therefore, adhering to this guideline is essential for maintaining the safety and efficacy of the gas piping system.