Staircase, has side rails made from single pieces of round tubing with horizontal, vertical and intermediate curved sections, joined together by cylindrical intermediate pieces

摘要

The staircase side rail (1) includes several horizontal(3) and vertical sections integrated into a single piece comprising a round tube (4). The horizontal and vertical sections are linked via curved sections (6, 6') that form S-shaped butt joints, between which are cylindrical intermediate pieces (8).