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for example : if we take a size of diameter 480mm fabricated pipe of wall thickness 3mm from this we going make a elbow by formula

CMof Circle X required degree by 360 X 2 X no .of cut needed

= 1520 X 90 / 360 X 2 X 3

= 64mm

make a divde four lines on pipe

mark of line of half of diameter = 220mm in two lines next to next parallel

mark 6.4 cm by one half to another half

on both lines

then u make cut it

u will get elbow

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Q: How do you fabricate elbows by cutting from a straight pipe then welding the cut parts to form an elbow?
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