With the continuous advancement of 400 series stainless steel production technology, many types of stainless steel parts for automobiles are made of 400 series stainless steel materials, and exhaust systems are even more widely used. The following is an introduction to the use of component materials in the exhaust system.

310S heat-resistant stainless steel, as an important metal raw material used in the aerospace and chemical industries, is widely used in high-temperature environments. High-temperature oxidation is also a key type of corrosion damage at high temperatures, so the development of new stainless steel materials that can resist high-temperature oxidation is of far-reaching significance for improving national defense. Among them, austenitic heat-resistant stainless steel 310S is a high-chromium nickel austenitic stainless steel.

The name 430 stainless steel comes from the Japanese national standard. It has very good corrosion resistance.

Ferritic stainless steel is an iron-chromium alloy with a chromium content of 10%-30% in stainless steel materials. This traditional stainless steel material is rarely used in industrial products due to its limited toughness, high brittle transition temperature, and weak processing capabilities.

Stainless steel pipes are widely used in the field of electric heating pipes, mainly in the production of electric water heaters, which mainly include heating tank plates, water volume regulators, power regulators, pressure sensors, water inlet pipes and water outlet pipe components.

As the application requirements of stainless steel materials become wider and deeper, stainless steel welded pipes, one of the application varieties, are also widely used in various industries.

The so-called lined stainless steel pipe is a common layer of thin-walled stainless steel pipe compounded on the inner wall of a galvanized steel pipe. It is used in many places in daily life as a water supply and home decoration material for high-rise buildings.

Stainless steel welded pipes with a pipe diameter less than φ219mm use continuous roll forming, which is basically the same as high-frequency straight seam welded pipes. For pipes with a diameter greater than φ219mm, pressure forming or spiral welding is used. Capillary tubes whose diameter is less than φ4.76mm are made by post-weld drawing method.

Usually, before stainless steel pipes are used as water supply pipes, there will be a passivation treatment process during the processing process.

For stainless steel production plants, product production equipment is the key to their survival. The quality of the equipment also determines the quality and performance of the products.

Among the 400 series stainless steel, the application range of 409L stainless steel coil is second only to 430 stainless steel.

In the iron oxide scale, the richtenite structure only exists on the surface close to the stainless steel plate, and the Fe3O4 and Fe2O3 in the outer layer of the iron scale are difficult to dissolve in the acid solution.