Ceeway has a socketed track end on this page (LR15). Or do you mean something different? Haven't seen to many other examples of socketed ends.
http://www.framebuilding.com/Frame%20Ends%203.htm

Not too sure what you mean by 'webbing'? Do you mean cutouts in the lugs? Do you have an example? Or do you mean webbing like the reinforcement on some BB shells?
http://www.framebuilding.com/Bottom%20Bracket%202.htm