Carbon steel elbows can be classified into long radius elbows and short radius elbows based on their curvature radius. A long radius elbow refers to a pipe with a curvature radius equal to 1.5 times the outer diameter of the pipe, i.e. R=1.5D. A short radius elbow refers to a curvature radius equal to the outer diameter of the pipe, i.e. R=1.0D. D is the diameter of the elbow, and R is the radius of curvature. D can also be expressed in multiples If classified by pressure level, there are approximately seventeen types, which are the same as the pipe standards in the United States.
An elbow is an engineering fitting that changes the direction of a pipeline. The connection methods include threading and welding. According to the angle, there are three most commonly used types: 45 °, 90 °, and 180 °. In addition, other abnormal angle elbows such as 60 ° and 30 ° are also included according to engineering needs. The materials for elbows include carbon steel, stainless steel, alloy steel, molybdenum, titanium alloy, and other non-ferrous metals. The methods of connecting with pipes include direct welding (the most commonly used method) flange connection, hot melt connection, electric melt connection, threaded connection, and socket connection. According to the production process, it can be divided into welding elbows, stamping elbows, hot bending and pushing elbows, and forging elbows. Other names: 90 degree bend, right angle bend, etc.

Standard: ANSI/ASME B16.9 、ASTM A403、MSS SP-75、SP-95、BS1640、BS3799、API、DIN、 NE10213、ISO、JIS、. SH/T 3408、GB/T12459-2017、HG/T21635-1987、D-GD0219、GB/T10752-1995 Wait.

The elbow is made of high-quality stainless steel raw materials and undergoes processes such as hot pressing, simmering, shaping, turning, polishing, penetration testing, and solution pickling. The product size is precise and meets the requirements of various harsh working conditions. Commonly used in pipeline systems such as oil, natural gas, power plants, chemical engineering, power plants, shipbuilding, fire protection pipelines, construction, and sewage treatment plants.

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