Which piping support device allows for axial movement of the pipe?

The adjustable roller stand is designed specifically to accommodate the axial movement of the pipe. This type of support allows the pipe to expand and contract with temperature changes while still providing the necessary stability and support. The roller mechanism enables the pipe to roll along the support, thereby facilitating uninterrupted movement along its axis.

In contrast, fixed supports immobilize a pipe in specific locations, preventing any axial movement, while hangers suspend pipes but typically do not allow for ease of movement along their length. A pipe clamp secures the pipe in place but limits any movement as well. This functional difference is what makes the adjustable roller stand uniquely suited for scenarios where axial movement is necessary in piping systems.