Ordinary stainless steel, including 304 stainless steel pipes and corrugated pipes, can't be used as floor heating pipes because these materials can't be in direct contact with cement. Pitting corrosion of 304 stainless steel pipe by chloride ions in cement is a big problem in the industry, and stress corrosion also exists in the processing process, which is also an insurmountable industry problem. Therefore, it is irresponsible and unscientific for some merchants to use stainless steel materials such as 304 for floor heating.
However, it is said that a company in Taiyuan developed the first special stainless steel in China this year, which eliminated the problems of pitting corrosion and stress corrosion. It is the most ideal material for stainless steel floor heating. It is said that its thermal conductivity is 80 times that of the existing floor heating, and there is no aging problem that people are worried about.