There are 2 types of chimneys made of stainless steel. They are used depending on the installation site and requirements emanating from the structure.
One wall pipe is mounted indoors, of course, while all existing fire safety requirements are observed. Its features consist in hanged heat transfer, allowing the use of heat coming from combustion products. Recently, they often began to use inexpensive stretch ceilings in more detail about them can be found on the Internet.
A sandwich or a double -walled pipe consists of two metal cylinders, the cavity existing between them is filled with a special heat -insulating material, as a rule, basalt wool. Such designs are used in case of crossing the ceiling with a chimney, as well as in places of possible touch of the pipe and other roof structures. Its device is made taking into account the increase in fire safety.
It is also recommended to install this type of pipes outside the rooms, which allows reducing the appearance of condensate on its inner surface.
The stainless steel pipe, created by the type of “sandwich” has a longer deadlines and its longer operation of. The main material for such pipes is stainless steel, such as AISI 304 (321), which contains nickel from 17% and 8% chromium and AISI 309, which contains 20% and 25% chromium and nickel.