Elbow with 3 times the diameter.
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Normally, a short radius of 1 times is used, or a long radius of 1.5 times. . . A size of 3 times the diameter – which standard provides such data? . ? Is such a size common?
Yes, there are welding elbows in 3D and 4D versions
1. Elbows with a diameter of 1.5 times that of the pipe are standard elbows; non-standard elbows are selected based on factors such as system resistance, pipe stress, and piping space. If you have specific requirements regarding the dimensions of elbows with a 3-times diameter ratio (for example, whether the diameter should be calculated based on the nominal diameter, outer diameter, or inner diameter), you need to inform the manufacturer; otherwise, they will manufacture them using the bending dies available in their bending machines.
This is called a bent pipe, not an elbow. 3D and 5D are commonly used; pipelines generally undergo a diameter test.
Was the last edit to this post made by kareale88 on 2019-1-2 at 15:45, and was it regarding elbow standards?
Due to different process requirements, multi-time long-radius elbows are used in many applications
Generally, 5D and above are used for ball passing, while 3D elbows are used in applications with high pressure, thick wall thicknesses, as well as those with low impact and pressure drop
Yes, they are commonly used; both American and Chinese standards are available. They are standard parts, with the American standard being 16.9 and the Chinese standard being 12459