Sectional chimney stack - made from lengths of double pipe separated with insulating material and flanged at ends

摘要

The chimney stack consists of outer (2) and inner metal tubes (1). The tubes are separated by insulating material (3) located by two grooves (6) near each end. The inner tube is flanged at the ends (5) as is the outer tube (4), which is longer. The insulating material has a groove (9) at each end, so that successive pieces may be joined to form a chimney.