Safety railing in works, of the type used in the construction of buildings for installation on plant edges and stairwells, configured by vertical posts and horizontal stringers with a tubular structure, presenting a telescopic joint in its extension, characterized in that the Crossing points of the posts (7) with spars (8) are secured by placing on the two profiles two separate tubes (1, 2) joined together by a threaded rod (3) in the middle of which a nut (4) is immobilized.), presenting the thread opposite directions on each side of the nut. (Machine-translation by Google Translate, not legally binding)
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