The early application of stainless steel pipes in the field of building engineering began in the 1930s. For example, the Savoy Hotel in London, built in 1929, should be made of stainless steel for ceilings and wall decorations, and still maintain its bright appearance for 70 years under sea and environmental pollution. The US Chrysler Building, built in 1930, uses stainless steel as its roof and surface decoration. It has only been washed twice. It stands in the glittering building of New York. With the economic growth and the improvement of people’s living standards, stainless steel has the advantages of good overall performance, durability, beauty, long service life, and high cost-effectiveness. It has been recognized by people from gorgeous hotels, commercial buildings, stadiums, and churches. Public facilities such as municipal buildings, bridges, and tunnels, etc., reach residents' houses; the application of stainless steel from decoration, roofing, reinforced concrete, urban water supply projects to sinks and baths in residential houses is becoming more and more widespread.