The advantages of stainless steel electric heating tube are: better heat resistance, dry burning resistance, mature technology, and lower cost. At present, there are many types of stainless steel heating pipes used by the manufacturers of instant electric water heaters, and the price gap of various pipes is large. The same is the stainless steel electric heating tube, the difference in quality and performance is also very large. The difference between the quality of stainless steel electric heating pipes is mainly the difference in nickel content. Nickel is an excellent corrosion-resistant material. After being combined with chromium in stainless steel, the corrosion resistance and process performance of stainless steel can be improved to some extent. However, for low-carbon nickel steel to obtain a pure austenitic structure, the nickel content must reach 24%, and only when the nickel content is 27% can the corrosion resistance of the steel in certain media be significantly changed.
