Calculating Power to Bend 16" Pipe 6m Long

[shaltout]

please i need to know how to calculate power needed to bend 16" pipe with wall thickness 8mm long 6m by roll bending

 

[Baluncore]

Are you making pipe from a flat sheet or bending a pipe ?

Power is the rate of energy flow as the pipe is being bent. How quickly do you want to bend the pipe ?

Is the pipe diameter 16” = 406 mm ?
Can you identify a roll bending machine that is capable of bending relatively thin walled pipe of that diameter without collapse ?
The energy requirement will be determined by bend radius and the angle of bend.