Welding supplies facilitate the welding process by supporting the workpiece and keeping it stable during welding, preventing welding torches from overheating, sealing off pipe sections, and more. Magnetic welding squares hold workpieces in place during welding. Weld backing supports the molten weld pool to ensure smooth, consistent root welds. Pipe purging tools isolate and seal off a section of pipe so that the area can be filled with shielding gas to prevent pipe surfaces from oxidizing during welding. Links, clamps, positioners and other welding products help secure the workpiece in place during welding. Water coolant systems provide a stream of water to water-cooled welding torches to prevent them from overheating and malfunctioning.