Fabricated building frame structure

The utility model relates to the technical field of assembly type buildings, and discloses an assembly type building frame structure which comprises a vertical pipe, a clamping block and a bolt, the bolt penetrates through the clamping block and is in threaded connection with the clamping block, the clamping block is rotationally connected with the vertical pipe, an adjusting mechanism is arranged on the clamping block, and the adjusting mechanism comprises a transverse rod, a bottom plate, a rotating ball and an adjusting rod. The bottom plate is placed on the ground, when the ground is inclined, the vertical pipe is rotated to drive the rotating ball on the adjusting rod to rotate on the top face of the bottom plate, the vertical pipe is made to be located at the vertical position, then the rotating ball and the bottom plate are welded, and then the rotating ball and the bottom plate are welded to be fixed. The situation that when the vertical pipe is installed, the vertical pipe cannot be located at the ve