Chromium is one of the more widely used elements in the production of stainless steel heat exchanger tubes. Because chromium is stainless steel are contained in the element, when the chromium element reaches 12%, in the atmospheric environment or in the oxidizing medium chromium can spontaneously form a stable, transparent, very thin passivation film to prevent corrosion, basically will not rust, higher alloy content can be strengthened by the thin film and rapid self-repairing film to improve the resistance to corrosion, that is to say, if chromium is added to stainless steel heat exchanger tube production, it can Increase the mechanical properties and wear resistance of stainless steel heat exchanger tube, increase the hardening degree of steel and the deformation ability after quenching, enhance the hardness, elasticity, antimagnetism, anti-tension, corrosion resistance and heat resistance of steel.

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Stainless steel tube in the production and processing is completed after a process - pickling passivation, then the stainless steel tube pickling passivation is how to operate? What role does it play?

We know that stainless steel welded pipe has a strong corrosion resistance, then the corrosion resistance of stainless steel welded pipe by what factors? What is the difference between the corrosion resistance of stainless steel welded pipe in different environments?

In fact, the corrosion resistance of stainless steel pipe is good because of the formation of a layer of purified film on the surface, in nature, it is in the form of a more stable oxide. But although the stainless steel tube according to the use of different conditions, the degree of oxidation is not the same, but the end are oxidized, this phenomenon is usually called corrosion.

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Excessive welding, simply put, is in the welding of stainless steel pipe, welding time is too long, welding heat input is too high or welding too many times, beyond the reasonable range of welding process.

304L stainless steel pipe: chromium (Cr) content is the same about 18% - 20%, nickel (Ni) content of about 8% - 10.5%, but the carbon (C) content is lower, not more than 0.03%. The lower carbon content is an important feature of 304L stainless steel pipe.

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304 stainless steel pipe has a long service life, from the use of stainless steel pipe in foreign countries, the service life of 304 stainless steel pipe can be up to 100 years, or 70 years, and the building is almost the same life. Of course, the premise is that the quality of 304 stainless steel pipe can not be too bad. 304 stainless steel pipe advantage is corrosion resistance, if the purchase of stainless steel pipe quality can be, in the use of the process of proper maintenance and cleaning, can effectively extend the service life of 304 stainless steel tube.

Stainless steel 304 steel pipe: high-quality materials and a wide range of applications, from the following four aspects of the detailed description: model specifications, material properties, product advantages and application areas.

Stainless steel 304 steel pipe material Stainless steel 304 steel pipe is a common stainless steel material, mainly composed of chromium and nickel. Among them, the content of chromium is 18% to 20% and the content of nickel is 8% to 10%. The material has good corrosion and oxidation resistance, and is able to keep its properties stable in high temperatures and humid environments.