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Welding pliers, tools for electric welding, have two handles and are shaped like pliers. Welding tongs are used to hold electrodes for electrode arc welding. The function of the welding tongs is to clamp the electrode and conduct current, and it is the main tool for electrode arc welding. And it is directly related to the operation safety of the welder, so the following safety requirements must be met: 1. The welding tongs should be able to clamp the welding rod at any angle set, and ensure the safety and convenience of replacing the welding rod. 2. The handle of the welding tongs should have good insulation and heat insulation properties. It is forbidden to use the welding tongs with damaged or no insulation. 3. The connection between the welding gun and the welding cable should be simple and reliable, and the contact should be good. 4. The welding pliers should be light (not more than 0.6kg) and easy to operate. 5. During the welding process, it is forbidden to put the overheated welding tongs in water to cool and continue to use. The welding tongs can safely and quickly install the welding rod and remove the remaining welding rod stubs; clamping the welding rod at any specified part can make it only 50mm long; the operator does not exert any external force. , Clamp the welding rods of various specifications and diameters specified by the manufacturer; when the welding rod and the workpiece are bonded together, the welding rod can be separated from the workpiece.