What is one key factor to consider when selecting materials for gas piping?

When selecting materials for gas piping, corrosion resistance is a critical factor because gas systems are often exposed to various environmental conditions that can lead to degradation over time. Corrosion can compromise the integrity of the piping, leading to leaks or failures that can pose serious safety hazards and costly repairs. Materials that exhibit good corrosion resistance ensure the longevity and reliability of the gas piping system, making it essential to choose materials that can withstand both the chemicals present in gas and the surrounding environmental factors.

While aspects like color coding, weight, and cost are also considerations in the selection process, they do not have the same direct impact on the safety and effectiveness of the gas piping system as corrosion resistance does. Ensuring that piping materials are resistant to corrosion helps maintain system integrity in the long run, making it a foundational criterion for material selection.