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Knowledge Summary of Stainless Steel Elbow

Apr. 20, 2020

Purpose of stainless steel elbow china: connect two pipes with the same nominal diameter to make a 90-degree turn.

1. Divide carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon leaching, ppc, etc. by material.

2. According to the production method, it can be divided into pushing, pressing, forging, casting, etc.

3. According to manufacturing standards, it can be divided into national standard, electric standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc. Stainless steel is also one of the strongest materials among construction metal materials. Because stainless steel has good resistance It is corrosive, so it can permanently maintain the integrity of the engineering design of the structural components. The chromium-containing stainless steel also combines mechanical strength and high extensibility into one body, and it is easy to process and manufacture the components to meet the needs of architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on the surface. Unfortunately, the iron oxide formed on ordinary carbon steel continues to oxidize, causing rust to continue to expand and eventually form holes. You can use paint or oxidation-resistant metals (For example, zinc, nickel, and chromium) electroplated to ensure the surface of carbon steel, but, as people know, this protection is only a thin film. If the protective layer is damaged, the steel below begins to rust.

Steel that is resistant to weak corrosive media such as air, steam, water, and chemically aggressive media such as acids, alkalis, and salts. Also known as stainless acid-resistant steel. In practical applications, steel that is resistant to weak corrosive media is often called stainless steel. The steel that is resistant to chemical medium corrosion is called acid-resistant steel. Due to the difference in the chemical composition of the two, the former is not necessarily resistant to chemical medium corrosion, while the latter is generally stainless. The corrosion resistance of stainless steel depends on the steel The alloy element contained. Chromium is the basic element that makes stainless steel obtain corrosion resistance. When the chromium content in the steel reaches about 1.2%, chromium interacts with the oxygen in the corrosive medium to form a thin oxide film on the steel surface. (Self-passivating film) can prevent the steel substrate from further corrosion. In addition to chromium, commonly used alloy elements are nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements of stainless steel structure and performance for various purposes.

Stainless steel elbows will not produce corrosion, pitting corrosion, rust or wear. In the pipeline system, stainless steel elbows are pipe fittings that change the direction of the pipeline. According to the angle, there are three most commonly used 45 ° and 90 ° 180 °. In addition, according to engineering needs, it also includes other abnormal angles such as 60 °. The materials of the elbows are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel degree elbow, non-ferrous metal, and plastic. The way of connecting with the pipe is direct welding (the most common way) flange connection, thread connection, and socket type connection. According to the production process, it can be divided into welding elbow, stamping elbow, forged elbow. A pipe fitting commonly used in pipeline installation, used for the connection of pipe corners. Other names: 90-degree elbow, right angle bend, etc.

Forged Elbow

Forged Elbow

The development direction of stainless steel welding elbow

Stainless steel welded elbows are metal fittings that change the direction of the pipeline on the pipeline. It is used to connect two pipes so that the pipes can be at a right angle or 45 °, and the connection methods with carbon steel pipes are welding, flange connection, thread connection, socket connection, and other forms.

Stainless steel welded elbows are produced and manufactured according to certain processes and standards in actual production and production, to ensure that they can show good value and role in actual work, and can fully play certain characteristics and values in practical applications. Opening mouths in accordance with normal technological methods and exporting to different countries and regions can promote the rapid development and progress of China's economy, which is of great significance to production enterprises.