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A brief introduction to the classification of elbows

2019-07-05 16:38:27

There are many types of elbow, and different types of classification criteria are different, the following is a brief introduction to the classification of elbow:

Carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon brick, PVC, PPR, RFPP(reinforced polypropylene), etc.

It can be divided into pushing, pressing, forging, casting and so on.

It can be divided into national standard, electrical standard, ship standard, chemical standard, water standard, American standard elbow, German standard, Japanese standard, Russian standard and so on.

According to its radius of curvature: can be divided into long radius elbow and short radius elbow. Long radius elbow means that its radius of curvature is 1.5 times the outer diameter of the pipe, i.e., R=1.5D. Short radius elbow means that its radius of curvature is equal to the outside diameter of the pipe, i.e. R= 1.0d. (D is elbow diameter, R is radius of curvature).

In terms of pressure levels, there are about 17 kinds of pipes, which are the same as the standard of American pipes: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; STD and XS are commonly used.

According to different shapes and USES can be divided into: groove elbow, sleeve elbow, double bearing elbow, flange elbow, reducing elbow, dull seat elbow, inside and outside teeth elbow, punching elbow, push elbow, socket elbow, butt welding elbow, wire elbow, etc.

According to the Angle of the elbow, there are 45° elbow, 90° elbow and 180° elbow.

According to the radius of curvature, it can be divided into long radius elbow and short radius elbow. Long radius elbow means that its radius of curvature is 1.5 times the outer diameter of the pipe, i.e., R = 1.5D. Short radius elbow means that its radius of curvature is equal to the outside diameter of the pipe, i.e. R = D. Where D is the elbow diameter and R is the radius of curvature.