How the closure of the insulation is manufactured 2

[T.Leite]

Hello engineers,
I'm new here in the community and I would like your help.
I work in a company that manufactures tanks for wine, alcohol, beer, etc. "without pressure" in stainless steel. In some cases, like fermentation tanks, I need to add partial tank insulation. Normally, the klopper top does not isolate. My question concerns how the closure of the insulation is manufactured. Currently, I use a disc, with the differences in diameters, and perform line-by-line welding. But, I noticed that some manufacturers "fold" the outer plate and weld it on the klopper top. Here are some images to make it clearer.

Current -

Other manufactures -

Best Regards,
Eng. Thiago Leite

 

[Jay_]

Machines

Detailing is a hobby,

 

[Dhurjati Sen]

Both are acceptable as long as the insulation is performing. Both are very good designs to me. I have seen much worse insulations than these two.

DHURJATI SEN
Kolkata, India

 

[HTURKAK]

This is metal spinning technology.

I wrote metal spinning of stainless steel plate and search the web. One of the video at link

https://www.youtube.com/results?search_query=metal+spinning

and two of the manufacturers

https://www.wenzelmetalspinning.com/metal-spun-tank-heads.html

https://www.kochmetalspinning.com/metal_spinning_products.asp

 

[T.Leite]

Thank you!

Both are acceptable as long as the insulation is performing. Both are very good designs to me. I have seen much worse insulations than these two.

I agreed with you. The both are acceptable.

This is metal spinning technology.

OK, now I understand.
The link bellow shows how the weld is performed.

https://www.youtube.com/watch?v=5HQyOAVtf4o

Thank you again.