Fabricated stair step

The utility model belongs to the technical field of building profiles, and particularly relates to an assembly type stair step which is characterized by comprising a step cold-bending profile, a step anti-skid core arranged on the step cold-bending profile, step folding pieces connected with the two ends of the step cold-bending profile, and mounting bolts arranged at the two ends of the step folding pieces. And the upper surface of the step folding piece is matched with the corresponding bending surface of the step cold-bending section bar. The section bar is novel in structure, high in strength, light in weight and strong in durability, can be manufactured into any length, can be provided with various parts such as stair steps, stair slow walking platforms and rest platforms according to actual requirements, and can be used as a main component of a stair and a platform to form a stair or platform component with other section bars; the section bar can be prefabricated, is easy to assemble and convenient to c