I like...I think a higher dof would be really cool only because of the color possibilities involved. Let's face it--it's plumbing, but for such a dark photo it has a lot of color to offer. I think the reason I could be drawn to the colors is the excellent lighting. I don't know how much PP you put into this but the fade of the pipe at the bottom is spot on. To combine this fade w/some vibrant in focus color at the top of the photo (pipe) would increase the already existent depth amazingly...Nice Art.
have a good one
3Eo