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The classification of stainless steel seamless elbows are as follows:
1. Radius of curvature
According to the radius of curvature, it can be divided into: long radius elbow and short radius elbow.
The radius of curvature of the long-radius elbow is equal to 1.5 times the outer diameter of the pipe, that is, R=1.5D; the radius of curvature of the short-radius elbow is equal to the outer diameter of the pipe, that is, R=1D. (D represents the diameter of the elbow, R represents the radius of curvature)
2. Pressure level
It can be divided according to the pressure level: there are about 17 kinds: it is the same as the American pipe standard:
Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, the most commonly used are STD and XS.
3. Elbow angle
According to the angle of the elbow, it can be divided into: 45° elbow, 90° elbow, 180° elbow