Welding device for bridge anti-collision guardrail construction

The utility model relates to the related technical field of anti-collision guardrail manufacturing, in particular to a welding device for bridge anti-collision guardrail construction, which comprises an end fixing component, a length adjusting device, an end fixing device, an adjusting sliding rod device, an adjusting sliding rod, a graduated scale, a circular tube clamping device and a first adjusting screw rod, the two end fixing assemblies each comprise a length adjusting device and two end fixing devices, the adjusting sliding rod device comprises an adjusting sliding rod, a graduated scale is fixedly arranged on the adjusting sliding rod, each round pipe clamping device is used for clamping a second round pipe, each round pipe clamping device comprises a first adjusting screw, and the first adjusting screw is provided with a second adjusting screw. According to the welding device, two first circular pipes and a plurality of second circular pipes can be arranged in order, the appearance quality of a guard