In a natural gas system, what standard should be followed for copper and brass piping?

The correct choice highlights the significance of adhering to ASTM B 88 standards, which specifically cover the requirements for copper and brass piping used in various applications, including natural gas systems. These standards provide essential guidelines regarding the material properties, dimensions, tolerances, and acceptable uses of copper water tubes, ensuring that the piping is suitable for transporting gases safely and effectively.

Using Type K or L copper piping under these standards is vital because it recognizes the different thicknesses and pressure ratings appropriate for gas applications, which is crucial for maintaining system integrity and safety. This adherence ensures that the piping will withstand the pressures and conditions typical of natural gas systems without compromising performance or safety.

By following these standards, professionals can achieve the necessary compliance with safety regulations, mechanical performance, and systems' longevity.