Heat treatment tool for ultra-large-diameter titanium alloy thin-wall seamless pipe

The utility model discloses a heat treatment tool for an ultra-large-diameter titanium alloy thin-wall seamless pipe, which comprises two half frames which are symmetrically arranged and detachably connected to form a cylindrical frame structure, and the interiors of the two half frames are used for placing the pipe; each half frame is provided with a plurality of arc plates which are arranged in parallel at intervals; the two semicircular plates are arranged on the outer sides of the two arc plates located on the outermost side at intervals and are parallel to the arc plates; the plurality of supporting rods are parallel to one another and are connected between the two semicircular plates and the plurality of arc plates; each arc plate is fixedly connected with a thick nut, each thick nut is in threaded connection with a puller bolt, the free end of each puller bolt is connected with an arc-shaped half plate, and the puller bolts are used for enabling the half plates to abut against the pipe to be installed