Thanks very much
In these photo's they were anodised and they turned out beautifully except for the four pilot holes I had lazer cut in the rack for precise positioning for the struts. Unfortunately the guide holes which were welded and sanded to 1200 grit, still showed up in the anodising which spoilt the finish, so I have had them powder coated and they have turned out very well.
In future I will etch the position for the struts underneath for the welding.