Shell forming method with low out of roundness for thin shell

[BasakAbhishek]

Hello,
My job requires forming a shell of Inconel625 of 2m ID, 6mm thickness, 2m long. The permissible out of roundness is 0.25%. Any idea how this can be achieved? Is there any other method other than a pyramid roller (maybe like forming on a carbon steel "mandrel"?
Thanks
Abhishek

 

[mfgenggear]

OP
Contact a custom tube and pipe shop.
If they have the correct facilities.
It can be slip rolled, welded , weld planished
Annealed, then pulled thru a draw die to obtain diameter size. However because it is thin wall and that size. Diameter roundness will be in the constrained condition.

 

[BasakAbhishek]

mfgengear
I mentioned the dimensions, 2m ID, 6mm thk, 2m long..its obviously not a pipe and cannot be drawn though a die...

 

[mfgenggear]

mfgengear
I mentioned the dimensions, 2m ID, 6mm thk, 2m long..its obviously not a pipe and cannot be drawn though a die...

how do you know, then if you know why are you asking.
take your drawing to a shop , and not just one , several until you find the right one.
I said a tube and pipe shop. that can handle that size. it's going to a specialty shop that knows how to make precision tube and pipe of any size.

 

[BasakAbhishek]

if a tube and pipe shop can handle 2m dia shells of Inconel 625 and can draw them through a die then it must be the best in business with huge presses and thousands of square metres in floor space...and if I could have taken the drawing to a shop, then is there any need for posting the question on eng-tips, is it?