Which tool is specifically used for removing and replacing flange bolts?

The tool specifically used for removing and replacing flange bolts is a flange spreader. A flange spreader is designed to create a gap between two flanges, which allows for the easy removal and installation of flange bolts. This tool helps separate the flanges without damaging them, which is particularly important in maintaining the integrity of the pipe system.

Using a flange spreader simplifies the task of bolting and unbolting flanges, as it provides the leverage needed to safely and effectively open the connection without applying excessive force that could potentially lead to misalignment or damage.

In contrast, the adjustable wrench is a general-purpose tool for loosening or tightening various types of fasteners but does not specifically target or facilitate the removal of flange bolts in the same manner. The torque wrench is used for applying a specific amount of torque to fasteners, helping to ensure a proper fit when bolting flanges together, rather than for removal purposes. Lastly, a pneumatic gun can be utilized to quickly drive or remove bolts but does not address the need to spread flanges apart, which is often crucial for proper access and maintenance.