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Application and performance characteristics of Thin walled stainless steel tube
Feb 04, 2018

Usually, people will be the ratio of the steel pipe diameter and wall thickness of more than 20 stainless steel tube called a Thin walled stainless steel tube, such as basic is the cold drawn pipe production, due to the particularity of material and structure, thin-walled stainless steel tube is mainly used in chemical, petroleum, light industry, food, machinery, instrument and other industrial heatproof container, pipeline and mechanical structure.

The Thin walled stainless steel tube which began to be produced and used in China at the end of the 1990s, has so far been heavily used in plumbing and direct drinking water. Thin walled stainless steel tubes are known for their durability and are being used to reduce wall thickness and lower prices for further promotion.In particular, small-diameter thin-walled stainless steel tubes are of low price, so the supporting connection method, reliability and price of fittings are the main factors that determine its development.

The application of thin-walled stainless steel tube is of great significance to improve the level of modern buildings in China and to improve the quality of water supply.Building water supply thin-walled stainless steel tube of the chromium content of over 12%, and according to the need to add other metal elements austenite matrix which is formed by the structural properties of ferroalloy, and obtain a series of unique performance.

For example, the addition of nickel in thin walled stainless steel tube can improve the ductility and toughness of the material, making it easy to form and bend.Reducing the carbon content can improve the welding performance of the material.Adding molybdenum or manganese can improve the corrosion resistance and corrosion resistance of materials.When the chromium in thin wall stainless steel tube is reacted with oxygen and oxidizing agent, the passivation effect is produced, and a thin and tough, dense passivated film Cr2O3 is formed on the surface, which can protect the coating effect of corrosion resistance.

The thickness of Cr2O3 can be increased, and the density uniformity is enhanced when the thin-walled stainless steel tube is treated with mixed, pickling and passivation process.However, the polishing and finishing process can not only eliminate the surface defects, but also make the passivation film more delicate and dense to reduce the probability of corrosion.At the same time, the inner wall of the thin-walled stainless steel tube is clean and small, which further enhances the hydraulic performance of the pipe and saves the consumption.

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