Material analysis of carbon steel elbow

Material analysis of carbon steel elbow

Carbon steel elbows are metal pipe fittings that change the direction of the lines on carbon steel pipes. The connection mode is wire buckle and welding. According to the Angle, there are 45° and 90°180° three commonly used angles, in addition, according to the engineering needs also include 60° and other abnormal Angle elbow. Elbow materials are cast iron, stainless steel, alloy steel, malleable iron, carbon steel, non-ferrous metals and plastics. The connection modes with the pipe are: direct welding (commonly used) flange connection, hot melt connection, electric melt connection, thread connection and socket connection, etc. According to the production process can be divided into: welding elbow, stamping elbow, push elbow, casting elbow and so on. Other names: 90 degree bend, right Angle bend, love bend, etc.

Carbon steel elbow is divided first by its radius of curvature, which can be divided into long radius elbow and short radius elbow. Long radius elbow means that its radius of curvature is equal to 1.5 times the outer diameter of the pipe, that is, R=1.5D. Short radius elbow means that its radius of curvature is equal to the outside diameter of the pipe, that is, R=1.0D. (D is the diameter of the elbow and R is the radius of curvature. D can also be expressed as multiples.) According to the pressure level, there are about 17 kinds of pipes, which are the same as the American pipe standards, including: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, among which STD and XS are very commonly used. According to the Angle of the elbow, there are 45° elbow, 90° elbow and 180° elbow. The executive standards include GB/T12459-2005, GB/T13401-2005, GB/T10752-1995, HG/T21635-1987, D-GD0219 and so on.

Carbon steel material is divided into: 10# 20# A3 Q235A 20g Q345B 20G 16Mn ASTM A234 ASTM A105 st37 ASTM A403 etc

The elbows made of the above materials are called carbon steel elbows.

According to the Angle: 45°, 90°, 180° these three commonly used elbow, other engineering needs, can be specially customized such as 60° or other angles.

Connection with carbon steel pipe: welding, flange connection, thread connection, socket connection and so on.

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