Our steel fabricator!

Is there a particular name of the steel you used? Color, finish?

As far as I know, it's typical steel. A copper sulphate solution was used on all the steel in the project to give it that deep coffee look.

What size are the balusters? They look round?
On the top rail is that a flat bar with wood added to the top?
If it is a bar what size did you use?
On the wall rail is that a wood rails with brackets or is that a flat bar with wood attached?

The balusters are 1/2" x 1/2" square steel pickets. They support a 1 1/2" x 3/8" steel railing, which is capped with 2" x 3" or 4" mesquite (not sure which dimension was ultimately used). Not sure what you mean by the wall rail, but a similar treatment was used throughout.