Energy-saving and environment-friendly thin-walled stainless steel pipe and fittings

The new type of building water supply pipe is one of the hot issues today. Thin-walled stainless steel pipe and pipe fittings are hygienic and durable, exquisite in appearance, and environmentally friendly and energy-saving. They have been recognized by the engineering community at home and abroad. Thin-walled stainless steel pipe and pipe fittings have a variety of mature connection methods. The installation is simple, safe and reliable. Due to the reduction of wall thickness and cost, the time for widespread application is ripe. First, the application of thin-walled stainless steel tubes abroad has become increasingly popular. The application of thin-walled stainless steel tubes began in the 1960s. At present, the application of advanced water supply and water treatment systems in buildings is increasingly common. The United Kingdom, Germany, the United States, and Japan all have stainless steel pipe standards, as well as ISO and DINEN standards. The United States has established the AN-SI/NSF61-1997a Standard/Health Fund International Standard according to the Water Purification Act, which clearly specifies that the metal materials used to treat drinking water are only stainless steel and nodular cast iron. The Canadian Ministry of Health, RvA (Dutch Approval Committee) and the World Health Organization also confirmed this standard. Materials that meet the requirements of the standard are stainless steel AISI304, 304L, 316, and 316L. Second, the domestic development of thin-walled stainless steel pipe In the domestic building water supply pipe system, galvanized steel pipe has ended a hundred years of glorious history, represented by aluminum-plastic pipe composite pipe and PE, PP-R and other plastic pipe rapid development However, there are some deficiencies in this kind of pipe, which is far from the water quality requirements of drinking water. Therefore, relevant experts predict that the building water supply pipe will eventually return to the era of metal pipes. We believe that thin-walled stainless steel in metal pipes is a pipe with a good overall performance and is very promising in the domestic market. To this end, China has issued relevant standards. 1, "stainless steel pipe fittings" GB/T19228.1-2003 2, "stainless steel pipe fittings for connecting thin-walled stainless steel pipe" GB/T19228.2-2003 3, "stainless steel compression pipe fittings with rubber O-type Sealing ring" GB/T19228.3-2003 4. "Technical Specification for Thin-Walled Stainless Steel Pipes for Building Water Supply" CECS 153:2003 5. "Thin-walled stainless steel for building water supply metal pipes" 04S407-2  6. "Thin-walled Stainless Steel Inserted Pressed Pipe and Pipe Fittings" CJ/T232-2006 III. Performance and Features of Thin-Walled Stainless Steel Pipe  1. The product has a service life of more than 50 years. 2, corrosion resistance: stainless steel has a very good corrosion resistance, 304 stainless steel can withstand 200ppm chloride, 316 stainless steel can resist 1000ppm chloride natural water corrosion, the surface of the tube and oxygen will automatically generate a dense corrosion resistance is very strong Chromium oxidation protective film, when designing stainless steel, does not need to consider the corrosion margin. 3, strong impact resistance: the strength of the water pipe is galvanized steel pipe 2 times, 3 times the copper pipe. Joint pressure 2.5-5 mpa, anti-pulling force> 5000n. It is resistant to high-speed water flow and can withstand high flow velocity of 30m/s. Therefore, it can resist the corrosion caused by the eddy current flowing through the nozzle, elbow, valve and pump;、

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