| 摘要 |
<p>The series comprises vertical hollow uprights (1) having four essentially vertical sides (3, 4, 5, 6) provided with a shaped appendix (13) protruding from one of said sides and horizontal hollow cross-beams (2) having four essentially perpendicular sides (16, 17, 18, 19) provided with a shaped appendix (24) protruding from one of said sides. The latter constitutes a housing seat for a sliding bar (27) which can be clamped in position and against one side (6) of an adjacent upright (2) for the reciprocal clamping of cross-beam (2) and upright (1). <IMAGE></p> |
