The direction of the line pipe bend is to be changed.Points according to the Angle 45 ° and 90 ° 180 ° three most commonly used, according to the requirements of the project also includes 60 °, and other abnormal Angle bend.Elbow materials have cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, nonferrous metal and plastic, etc.With the pipe connection mode: direct welding (way) of the most commonly used flange connection, hot melt connection, fused connection, threaded connection and socket type connection, etc.According to the production process can be divided into: welding bend, stamping elbow, pushing system bend, casting bend, etc.

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