![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
Lofting drawing of 90 degree diameter 630 elbow R = 465
Look at the picture
The lofting drawing of 90 degree and 630 diameter four section elbow is made, and the plate thickness is 8mm
It's still short of the bending radius. I'll set out for you
What are 153 degrees 19'42 "+ 26 degrees 40'28" and 90 degrees 3 "- 57 degrees 21'44"
For example, 28 "=? '+? Degrees
153 degrees 19'42 "+ 26 degrees 40'28 = 180 degrees 10"
90 degrees 3 "- 57 degrees 21'44" = 32 degrees 38'19“
It's all in 60
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