薄壁不锈钢管在室内燃气工程的应用（Application of thin wall stainless steel tube in indoor gas project）.docVIP

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薄壁不锈钢管在室内燃气工程的应用（Application of thin wall stainless steel tube in indoor gas project）.doc

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薄壁不锈钢管在室内燃气工程的应用（Application of thin wall stainless steel tube in indoor gas project） Application of thin wall stainless steel tube in indoor gas engineering (technical exchange) Abstract: the basic characteristics of thin wall stainless steel pipe are introduced. The design points, installation methods, application effects, existing problems and relevant treatment measures are also discussed. Key words: indoor gas pipeline; thin wall stainless steel pipe; design; installation; corrosion protection I. overview Stainless steel pipes are widely used in building water supply and direct drinking water pipes because of their safety, sanitation, high strength, corrosion resistance, long service life, maintenance free and beautiful appearance, and are in good use at present. With the development of the national economy and the improvement of life quality, to improve the quality of modern architecture, prolong the service life of the gas pipeline, learn from the successful experience of water supply engineering, GB50028-2006 town gas design code (hereinafter referred to as the fuel gauge) was promulgated, according to the Regulations in burning article 10.2.3 around Gas Co in addition to the use of seamless steel pipe, galvanized steel pipe as the indoor gas pipe, start using thin wall stainless steel pipe in indoor gas engineering, achieved good results. Corrosion resistance of air, steam, water and other weak corrosive medium and acid, alkali, salt and other chemical corrosive medium, collectively referred to as stainless steel. Stainless steel contains alloying elements, chromium, which react with oxygen in the corrosive medium. A self passivating oxide film on the surface of the steel can prevent further corrosion of the steel matrix. Stainless steel is divided into austenite, ferrite, martensite and so on according to the matrix. They are divided into Cr (SUS400), Cr-Ni (SUS300), Cr-Mn-Ni (SUS200) and precipitation hardening (SUS600). Our company has used in the indoor