The stainless steel elbow is a pipe fitting that changes the direction of the pipeline. Stainless steel elbow is an elbow made of stainless steel as the main raw material. Stainless steel elbows are generally distinguished from carbon steel elbows. Their main difference lies in the different materials, which show various characteristics.
Classification: According to the angle of the elbow, there are generally three types of stainless steel elbows, including 45-degree angle, 90-degree angle, and 180-degree angle. These three are the most common specifications of stainless steel elbows, which are more popular.
Features: The biggest feature of the stainless steel elbow is that it is not easily corroded and rusted, so the service life is longer. Stainless steel itself is a steel that is resistant to air, steam, and weakly corrosive chemicals. Stainless steel elbows made from it are naturally equipped with weak corrosion resistance. Therefore, stainless steel elbows have gradually replaced traditional elbows and are widely used. used.
Corrosion resistance of stainless steel elbow:
The stainless steel elbow has the advantages of smooth inner wall, low resistance to heat medium flow, acid and alkali resistance, long service life, and easy installation. Stainless steel elbows are resistant to corrosion by weak corrosive media such as air, steam, water, and chemically corrosive media such as acids, alkalis, and salts. Also known as stainless acid-resistant steel. In practical applications, steel that is resistant to corrosion by weakly corrosive media is often called a stainless steel stamped elbow, and steel that is resistant to chemical media is called acid-resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to chemical media corrosion, while the latter are generally stainless.
The corrosion resistance of stainless steel elbows depends on the alloying elements contained in the steel. Chromium is the basic element that enables stainless steel elbows to obtain corrosion resistance. When the chromium content in the steel reaches about 1.2%, chromium interacts with the oxygen in the eroding medium to form a thin oxide film on the steel surface (self-passivation) Membrane), can prevent the steel matrix from further erosion. Stainless steel elbows have different production processes and processes. In the processing, they need to be produced and processed according to certain conditions. Elbow fittings of different properties need to pay attention to some matters during processing.
Post time: 2020-06-23