Surface spraying equipment for steel pipe production assembly line

The utility model relates to the technical field of paint spraying structures, in particular to surface spraying equipment for a steel pipe production assembly line. According to the technical scheme, the paint spraying device comprises a base, a shell barrel, an inner container barrel and a conical barrel, the outer wall of the inner container barrel is provided with the shell barrel through bolts, the shell barrel is arranged in the middle of the upper surface of the base, a threaded rod is installed on the base in a threaded mode, a supporting seat is glued to the lower surface of the threaded rod, and paint spraying heads are installed on the inner wall of the inner container barrel at equal intervals; a paint spraying head is installed on the inner container cylinder, a paint spraying pipe is installed on the paint spraying head and penetrates through the shell cylinder, the conical cylinders are symmetrically installed on the two sides of the inner container cylinder through bolts, suction heads are ins