New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

What type of tubing would best withstand external temperatures during high-heat applications?

1. Plastic tubing

2. Metallic tubing

3. Rubber tubing

4. Glass tubing

The correct answer is: Metallic tubing

Metallic tubing is ideally suited for high-heat applications because metals typically have higher thermal conductivity and can withstand significant temperature fluctuations without degrading. Unlike plastic, which may warp or melt under high temperatures, metallic materials are designed to endure high thermal stress and maintain structural integrity. Metals such as copper, stainless steel, and aluminum are commonly used in high-heat piping systems as they can handle extreme conditions effectively. In addition, metallic tubing is less prone to expansion and contraction compared to plastic or rubber options, which can lead to failure in high-heat environments. The durability and strength of metal also make it resistant to punctures or impacts that might occur in industrial settings. This makes it the preferred choice for systems requiring robustness in extreme thermal scenarios. While other types of tubing have their respective advantages, they do not match the high-heat resilience and reliability provided by metallic tubing in demanding applications.