We have a design of stainless steel pipe with a bend radius of 1.6 The OD of the pipe is 47mm and the wall thickness is 3mm. Can anyone tell me if this is possible please? I am pretty sure the SS is austenitic. I have worked with ss before and min bend radius is 2 also we are working to ASME b31

 

You should mention purpose & service of pipe segment. Try fitting elbows instead of bends, there r standard elbows available with vendors, try this & tell me later

 

Tight thin wall bends are possible using a mandrel bender. The only issue is finding someone with suitable tooling. If you are from UK I suggest Global Tube Fabrication of Worcester who have bent thin wall ducts for me with great success.

 

Hi!
Looking forward to reading about a solution to bend such a small radius 1.6. Or have I misunderstood the radius dimension?

 

Lars, the bend radius is expressed as a factor of the diameter i.e. 1.6*diameter.
With a mandrel bender 1*d can be achieved if you can find someone with the correct mandrels.

 

Thanks.
That explain. I know it could be a problem to find correct mandrel. What I understands its depends of both OD/ID and the radius.