Clamping device for welding equipment

The clamping device for the welding equipment comprises an L-shaped fixing base, a first U-shaped plate and a second U-shaped plate, the top of the L-shaped fixing base is rotationally connected with a rotating rod, the outer surface of the rotating rod is fixedly connected with an L-shaped connecting plate, the first U-shaped plate is in threaded connection with a threaded rod, and the second U-shaped plate is in sliding connection with a sliding rod. The outer surfaces of the threaded rod and the sliding rod are rotationally connected with a first connecting plate and a fifth connecting plate respectively, the bottoms of the threaded rod and the sliding rod are rotationally connected with first clamping plates, the bottoms of the first clamping plates are rotationally connected with limiting rods and bolts, and second clamping plates are arranged below the first clamping plates. According to the device, two round pipes can be conveniently placed at the same height and fixed, the round pipes can be prevented