OK for your questions:
The texture quality looks fine for realistic game. You do need to add shadows to your texture to give it some depth - it doesn't take much shadow either - The metal underneath the table top needs to be shaded darker, then a gradient down to half way down the leg. If you put up your texture map, I can show you what I mean.
I think adding the weld texture would be a great idea. The table is definitely grungy, and really looks the part.
Also you've got a small mapping issue in the corner of the metal part where the texture is compressed.
are the welds good enough?
Plus here is the table itself if anyone dares to test it in their game
you find my uv here: http://farm6.staticflickr.com/5524/12613...2d_o_d.png
welds are here: http://farm8.staticflickr.com/7428/12614...bd_o_d.jpg
Also i can't delete my posts why?
Nope i don't see it.I was trying to delete my post in edit mode (you know,to organize my posts in this thread)and the site tells me that i don't have permission