New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

What is the maximum thickness for coiled aluminum tubing typically supplied?

1. 1/4 inch

2. 3/8 inch

3. 1/2 inch

4. 3/16 inch

The correct answer is: 3/8 inch

The maximum thickness for coiled aluminum tubing typically supplied is 3/8 inch. This value is based on industry standards and common practices in applications involving aluminum tubing, which emphasizes flexibility and weight efficiency while maintaining strength. Coiled aluminum tubing is often utilized in HVAC systems, refrigeration, and other applications where lightweight and corrosion-resistant materials are preferred. The choice of 3/8 inch reflects a balance between structural integrity and the ability to perform certain bending and installation tasks. Thicker materials can be more challenging to work with in coiled forms, which is why this thickness is a standard max for such tubes. In contrast, other thickness options presented are generally not what is considered standard for coiled aluminum tubing, which underscores why the correct answer aligns with common industry specifications.