Can I use corrugation when installing a gas column?

Hello. In general, the use of corrugated pipes for geysers is not prohibited at the legislative level, subject to the following rules:

1. The material must freely withstand heat up to 200 degrees.
2. The diameter of the corrugated pipe must be larger than the outlet pipe.
3. A pipe section extending vertically from 30 cm in size with no more than 3 turning points.
4. No withdrawal to living quarters.
5. The gap between the wall and the pipe from the degree of its combustibility.

But about corrugations made of various materials and the relevance of their use:

1. Stainless steel, corrugation, with a wall thickness of 0.12 - 1 mm. It withstands aggressive environments and holds temperatures up to 900 degrees.
2. Aluminum corrugation. They do not praise her, they say that she will quickly burn out, although the temperature exposure is about 500 degrees.
3. Galvanized corrugation. maintains 600 degrees, are allowed to installation on high-temperature and low-temperature water heaters.

Please note that, despite the absence of legislative requirements, at a general level, in the region, your resource providers can only allow pipes to be used in accordance with local regulations, in the form of solid stainless steel or galvanized steel products. It is better to clarify this issue beforehand in the gas service. Good luck