This image is well done, perfectly balanced, and has nice coloring. However, it almost has a static feel to it that I am put off by. Also, the way the peak at the top of the ceiling is cut off make me want to scroll up higher...it just seems to interrupt the flow of the lines, which all tend toward the vertical.
A great photo. Personally (just my opinion, take with a grain of salt), I would have cropped out all of the balcony above, even though it would mean lopping off part of the larger pipes. This would have given a more uniform background to the rest of the pipes.
The focus is great but what I'm really amazed by are the absolutely gorgeous colours in the pipes - especially the blues at the bottom. That definitely gives it the 'wow' factor in my book.
Overall, a very nice and original entry - well done!