Hmm.. may very well be Dwemer but it could also be Iron or Steel, the light makes it a little difficult to tell for sure.
That is probably a variant of steel armor. https://forums.playfire.com/_proxy/?url=http%3A%2F%2Fipon.hu%2F_userfiles%2FImage%2FPac-Man%2FKEPEK_2011%2Fskyrim_KhajiitTemple.jpg&hmac=c1df6987c83b4681d8dcd375aecb9c26 is steel armor as seen in the Quakecon video. What the draugr lord is wearing, as well as all draugr it seems, are wearing something similar, though the design looks a bit different. For example, the pauldrons are a totally different style and the chest center piece is round on the draugr's armor