Fixing device for bending metal pipeline

The utility model discloses a fixing device for bending a metal pipeline. The device comprises a metal pipeline and a sliding groove, a first fixing plate is arranged on one side of the metal pipeline, through holes are formed in the positions, making contact with fastening bolts, of the first fixing plate and a second fixing plate, fastening nuts are installed at the ends, away from the second fixing plate, of the fastening bolts, and springs are arranged on the sides, away from the second fixing plate, of installation supports. The thickness of the sliding block of the fixing device for bending the metal pipeline is smaller than one third of the thickness of the mounting bracket; the gap between the inner walls of the first fixing plate and the second fixing plate is adjusted according to the caliber of the metal pipeline; firstly, the sliding blocks are installed on the inner sides of the sliding grooves in a sliding mode, then the sliding blocks are installed on the sides, close tothe metal pipeline, of t