1. Material properties such as corrosion resistance, wear resistance, and mechanical properties must be considered. The tensile strength of 304 stainless steel pipes exceeds 520Pa. The thin and dense chromium oxide film ensures corrosion resistance in all water qualities and the ability to withstand erosion from high-speed water flow over a long period. Additionally, thick-walled stainless steel pipes have a lifespan of over 70 years. Therefore, stainless steel is regarded as an excellent metal material for these three superior properties.

2. Traditional stainless steel pipe connection methods primarily include welding and flanges; however, due to the installation process, the wall thickness of stainless steel pipes must be greater than 2.0mm to ensure the connection strength and welding reliability of the pipes. Other thick stainless steel pipe connection methods feature unique tube fitting design structures.

3. From an economic perspective, using thicker-walled stainless steel pipes can ensure the safety of the pipeline system to a certain extent. However, an increase in wall thickness will raise the cost of stainless steel pipes. From a user-economic standpoint, as long as the wall thickness meets the lifespan requirements, the lifespan of 0.8mm thin-walled stainless steel pipes can exceed seventy years, according to the experience of using stainless steel pipes in European and American countries.