Duct for guiding pipes or cables through bores or irregular holes in masonry comprises disks which correspond in shape to hole and in which separate axial tubes through which pipes or cables pass, are mounted

摘要

The duct (10) for guiding pipes or cables (12) through bores or irregular holes (11) in masonry comprises disks (20) which correspond in shape to the hole and in which separate axial tubes (21), through which the pipes or cables pass, are mounted. Link seals (13, 14) are fitted around the outside of the duct and axial tubes.