Hi Piter, re: IGES problem - somehow Pro/E does not like how that one surface is trimmed. The best thing to try is do a new export using STEP file format instead and see if that works better.
re:
> I tried Boolean Union and a fillet, but the surface is not absolutely smooth.
> I would like surface connection as solids wearing stockings.
You should use a G2 blend instead of a circular fillet then. As far as I can tell, you had the kind of result you are looking for in this previous message here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7414.12
All those things you are complaining about in that message are just visual display artifacts, not anything wrong with your surfaces themselves.
Please read my reply here which explains all that in detail:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7414.15
If you would like you can post your model with the G2 blend in it and I will show you what it looks like with a finely diced up mesh for display so you can see that those visual imperfections are just display artifacts and not really something to worry so much about.
- Michael
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