True or False: It is very important that a flame be in motion continuously to avoid damaging the tube.

Maintaining a continuous motion of the flame while heating a tube is crucial to prevent localized overheating, which can lead to damage. When a flame remains stationary on a specific spot of the material for too long, it can cause that area to reach excessively high temperatures, potentially resulting in warping, weakening, or even melting of the tube. Continuous motion helps to evenly distribute heat across the surface, ensuring that the entire material reaches the desired temperature uniformly without causing structural harm. This technique is particularly important in pipe fitting and welding applications, where precision and integrity of the materials are critical for safety and performance.