Pipes are obviously a recurrent symbol of construction sites as they can be easily found whenever something is constructed. Many people connect it easily with hard work and it indicates that there is some work going on. Pipe is a homonym, so that you might find some illustrations showing you pipes to smoke. They are also nice to look at and are useful for many illustrations. So you might need them anyway and should not be bothered discover them hear as well.
Click through or gallery and discover various images of pipes - the pure beauty of pipes!