1) Application of reinforced concrete. Stainless steel bars are selected for reinforced concrete structures to improve strength and resist severe marine environment and chloride corrosion of embedded steel bars in concrete. Corrosion-resistant stainless steel concrete is used on the deck of many marine buildings (such as CoosBay Bridge in the United States to meet the requirements of strength, corrosion resistance and earthquake resistance, maintenance-free service life of up to 120 years), piers, wharfs, pile foundations and prevention. Slope embankment, mooring system, mooring gear, gangway, railings can also be used in the chemical industry and other important process equipment with high corrosion resistance requirements in the foundation structure. In the urban foundation equipment, such as the overpass in New Jersey, USA, stainless steel reinforced concrete structure is also used. Compared with ordinary carbon steel reinforcement, the cost of stainless steel reinforcement is higher, but from its good comprehensiveness. It's cost-effective to think about it in terms of service life.
2) Application of roof. The early buildings using stainless steel as roofs include Savoy Hotel in London, Eurostar Railway Station, Chrysler Building in New York, Empire Building, etc. In the 1990s, Kuala Lumpur Shuangta Pei Chongnas Building, Shanghai Jinmao Building and Hong Kong Convention and Exhibition Center were built in Asia. In 2002, the dome stadium roof of Sapporo City, Japan, which was newly built for the world football match, was adopted one after another.
3) The application of decoration engineering. In addition to walls, columns, automatic telescopic doors, curtain doors, stepped fence handrails, balcony handrails, rainwater drainage pipes, flagpoles, street lamp poles, arcade frames, the use of kitchen bathroom countertops, flumes, brackets in residential buildings is increasing. Steel grades for decorative engineering applications are more than 304 and 316 are also applied.
4) Application of water supply engineering. With the rapid development of economy and the progress of people's life and death level, a large number of urban residential buildings, public buildings and tourist facilities have been built, and renewal of domestic water and hot water supply has been requested. Water quality problems have attracted much attention. Galvanized steel pipes, as common pipes in water supply projects, are prone to corrosion, showing "red water" and "green water" phenomena, which make it difficult to improve water quality, and because of leakage, their service life is short. It is predicted by experts that plastic pipes, composite pipes and copper pipes will gradually withdraw from the historical stage, but they are less advantageous than stainless steel in terms of safety, reliability, sanitation, environmental protection and economic durability. Engineering theories at home and abroad prove that stainless steel is the best energy-saving and environmental protection pipes for water supply system with the best comprehensive performance and the best guarantee of water quality.
China Seamless Pipeline Network: Thin-walled stainless steel has been used more and more in construction water supply projects due to its advantages of high strength, good toughness, no brittleness at low temperature, low thermal expansion coefficient, no leakage, durability, sanitation, non-toxicity, non-pollution, high cost-effectiveness and 100% reuse rate. Japan has been carrying out stainless steel water supply pipes inside and outside buildings for 25 years. After the stainless steel water supply pipes in Tokyo are fully stainless, the water quality is clean and hygienic, the maintenance rate and leakage phenomenon are greatly reduced, and the water source is saved. After the Hanshin earthquake, the water supply pipes in Tokyo are in good condition. Singapore's legislation stipulates that stainless steel pipes must be used for urban water supply. The United States, Britain and France all have stainless steel pipes to regulate the application of stainless steel in water supply and water treatment projects in the prosperous countries of the world.
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