BeiFu Pipe focuses on the research and development and production of various flanges and pipe fittings.
Bending product information
2025-01-18
Steel pipe elbows (sometimes also called bends) are key components in pressure pipeline systems used to change the direction of fluid flow. They are used to connect two pipes of the same or different nominal diameters and to direct the pipe and fluid flow to a 45-degree or 90-degree direction. This change in the direction of fluid flow increases the pressure loss in the system due to impact, friction, and reacceleration.
Classification of Steel Pipe Elbows
Steel pipe elbows can be classified according to various parameters, including:
Angle of direction
Length and radius
Connection to the pipe
Construction material
Types of elbows based on the angle of direction
Depending on the fluid flow direction of the pipe, elbows can be divided into different angles, such as 45 degrees, 90 degrees, 180 degrees, which are the most common elbows. Some special pipes also have 60-degree and 120-degree elbows. This degree is simply a representation of the angle the fluid flow will change after passing through the said elbow.
Types of elbows based on length and radius
Elbows are divided into two groups, defining the distance over which the flowing fluid changes direction; the centerline from one end to the other. This is called the "center-to-face" distance, equivalent to the radius of the elbow bend.
If the radius is the same as the pipe diameter (center-to-face dimension of 1.0 X diameter), it is called a short radius elbow (SR elbow), usually used in low-pressure, low-velocity pipes or in confined areas where space is a major concern. If the radius is greater than the pipe diameter (center-to-face dimension of 1.5 times the diameter), we call it a long radius elbow (LR elbow) used for high-pressure and high-flow pipes.
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