Passivation Process of Stainless Steel Pipe
Time：2015.10.20
Source: http://www.sssshangshang.com
Author：www.sssshangshang.com
Shangshang steel pipe has a strict manufacturing process. From the raw material to the loading of the finished products, we have strict inspection process in case there are unqualified stainless steel pipe.
Before leaving factory, Shangshang stainless steel thick-wall pipe should be passivated. During the production process, when the surface of Shangshang steel pipe is dirty, the pipe needs passivation. After welding, when the Shangshang stainless steel thick-wall pipe has different colors with weld bead, the pipe also needs passivation.
Then what is passivation? The so-called passivation refers to soak Shangshang stainless steel thick-wall pipe in the 2% nitric acid liquor. Nitric acid will have a chemical reaction with the chromium to form chromic oxide film. It is actually the passivation film. Dense passivation film covering the surface of Shangshang steel pipe or stainless pipe fittings is equal to a coat of paint on the surface to prevent oxidation of the metal to continue. Since chromium oxide passivation film is very dense, it will automatically resume after a passivation film damaged. Unlike the iron, the iron will produce ferric oxide after the iron oxidation. Therefore, Stainless steel containing chromium has high corrosion resistance with passive film. Thickness of the passivation film is generally in the 3-5 × 10-6mm.
Passivation is a kind of necessary procedure of manufacturing Shangshang steel pipe. By passivation process, we can get more high-quality stainless steel pipe. Due to the passivation process, Shangshang stainless steel thick-wall pipe has better working performance than any other stainless steel tube.
In many fields, Shangshang steel pipe has a wide application. For example, Shangshang stainless steel thick-wall pipe can be used in the building structure construction process because of high strength and corrosion resistance. Shangshang steel thin-wall stainless steel pipe can be used for manufacturing medical equipment because of high hygiene. Shangshang steel seamless pipe can be used for water and oil transportation because of high strength and long service life. In a word, Shangshang steel pipe is very popular in the market.
Are you interested in buying Shangshang stainless steel thick-wall pipe? We provide all kinds of high-quality stainless steel tube for different applications in our life and industry. You can contact us if you are in need of stainless steel pipe by visiting www.sssshangshang.com. All of our products are of high quality but low price. There is no reason for you to consider anymore because we are the best supplier in China. No companies can catch up with us.
Before leaving factory, Shangshang stainless steel thick-wall pipe should be passivated. During the production process, when the surface of Shangshang steel pipe is dirty, the pipe needs passivation. After welding, when the Shangshang stainless steel thick-wall pipe has different colors with weld bead, the pipe also needs passivation.
Then what is passivation? The so-called passivation refers to soak Shangshang stainless steel thick-wall pipe in the 2% nitric acid liquor. Nitric acid will have a chemical reaction with the chromium to form chromic oxide film. It is actually the passivation film. Dense passivation film covering the surface of Shangshang steel pipe or stainless pipe fittings is equal to a coat of paint on the surface to prevent oxidation of the metal to continue. Since chromium oxide passivation film is very dense, it will automatically resume after a passivation film damaged. Unlike the iron, the iron will produce ferric oxide after the iron oxidation. Therefore, Stainless steel containing chromium has high corrosion resistance with passive film. Thickness of the passivation film is generally in the 3-5 × 10-6mm.
Passivation is a kind of necessary procedure of manufacturing Shangshang steel pipe. By passivation process, we can get more high-quality stainless steel pipe. Due to the passivation process, Shangshang stainless steel thick-wall pipe has better working performance than any other stainless steel tube.
In many fields, Shangshang steel pipe has a wide application. For example, Shangshang stainless steel thick-wall pipe can be used in the building structure construction process because of high strength and corrosion resistance. Shangshang steel thin-wall stainless steel pipe can be used for manufacturing medical equipment because of high hygiene. Shangshang steel seamless pipe can be used for water and oil transportation because of high strength and long service life. In a word, Shangshang steel pipe is very popular in the market.
Are you interested in buying Shangshang stainless steel thick-wall pipe? We provide all kinds of high-quality stainless steel tube for different applications in our life and industry. You can contact us if you are in need of stainless steel pipe by visiting www.sssshangshang.com. All of our products are of high quality but low price. There is no reason for you to consider anymore because we are the best supplier in China. No companies can catch up with us.
